189 Electrical bulb & socket parts are listed for the 2008 Cadillac STS, in 19 part types, covering all 3 engine options (3.6L V6, 4.4L V8 Supercharged and 4.6L V8). Each one has a brand, a manufacturer part number and notes that say where it fits.
The bulb and socket system on the 2008 Cadillac STS covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. The largest groups are Headlamp Bulb (41 parts), Fog / Driving Lamp Bulb (37 parts) and Headlamp Socket (27 parts). The other 16 part types cover the remaining 84 parts.
The 2008 Cadillac STS was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2008 Cadillac STS electrical bulb & socket parts are SYLVANIA (52 parts), HELLA (35 parts) and WAGNER (34 parts), plus 12 more brands. Quality grades include Standard Replacement, Extra Bright and Extended Life.
35 parts on this 2008 Cadillac STS page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including HELLA 3157 (Back Up / Reverse Lamp Bulb) and HELLA 3157 (Daytime Running Light Bulb). Click any part number to see every vehicle that part fits.
Back Up / Reverse Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/8W | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16qLong Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 3157ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver StarCool White | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 4.6L V8 | 3157WLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Ultinon LEDWhite | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/7W | View on Amazon |
| SYLVANIA Popular Fits: 4.6L V8 | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16qWattage: 27.00 W | View on Amazon |
| ACDELCO Fits: 4.6L V8 | 3157KX | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| WAGNER Fits: 4.6L V8 | 3157KX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the bulbs in the reverse lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
8 Back Up / Reverse Lamp Bulb parts are listed for the 2008 Cadillac STS, from SYLVANIA, HELLA, PHILIPS and 2 other brands. HELLA 3157 carries the "Popular" badge.
The Extended Life section lists 2 options from HELLA and SYLVANIA — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. HELLA 3157LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section lists 1 option from SYLVANIA — grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. SYLVANIA 3157ST is listed in this group.
In the LED (instant-on, long life, energy-saving) grade, PHILIPS supplies 1 part: grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. A representative part number is PHILIPS 3157WLED.
The Standard Replacement section lists 4 options from HELLA, SYLVANIA, ACDELCO and 1 other brand — built to original-equipment specification. HELLA 3157 is listed in this group.
This group includes HELLA 3157, HELLA 3157LL and SYLVANIA 3157ST and the remaining parts above.
Daytime Running Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/8W | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16qLong Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 3157ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver StarCool White | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 4.6L V8 | 3157WLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Ultinon LEDWhite | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/7W | View on Amazon |
| SYLVANIA Popular Fits: 4.6L V8 | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16qWattage: 27.00 W | View on Amazon |
| ACDELCO Fits: 4.6L V8 | 3157KX | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 23757NAK | 🇺🇸 US 🇨🇦 CA | Natural Amber | View on Amazon |
| WAGNER Fits: 4.6L V8 | 3157KX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the bulbs used as daytime running lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
9 Daytime Running Light Bulb parts for the 2008 Cadillac STS come from 6 brands — SYLVANIA, HELLA, PHILIPS and 3 other brands. The "Popular" part is HELLA 3157.
Extended Life: 2 parts, from HELLA and SYLVANIA. A representative part number is HELLA 3157LL.
Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 3157ST.
The LED (instant-on, long life, energy-saving) section: 1 option from PHILIPS. PHILIPS 3157WLED is listed in this group.
Standard Replacement: 5 parts, from HELLA, SYLVANIA, ACDELCO and 2 other brands. A representative part number is HELLA 3157.
Part numbers include HELLA 3157, HELLA 3157LL and SYLVANIA 3157ST, among others listed above.
Dome Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 2122LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: Double-End CapLong Life | View on Amazon |
| WAGNER Fits: 4.6L V8 | 2122LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeDouble End Cap Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 4.6L V8 | 212WSMD | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Wattage: 1.44 WBulb Material Color: | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 4.6L V8 | 2122 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits or Standard | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 2122 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WAGNER Fits: 4.6L V8 | 2122 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Double End Cap Base9.990 Watt | View on Amazon |
This table covers the bulbs in the dome lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
6 Dome Light Bulb parts are listed for the 2008 Cadillac STS, from SYLVANIA, WAGNER, DORMAN and 1 other brand. DORMAN 212WSMD carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 2122LL is listed in this group.
LED (instant-on, long life, energy-saving): 1 part, from DORMAN. A representative part number is DORMAN 212WSMD.
The Standard Replacement section: 3 options from PHILIPS, SYLVANIA and WAGNER. PHILIPS 2122 is listed in this group.
This group includes DORMAN 212WSMD and SYLVANIA 2122LL and the remaining parts above.
Fog / Driving Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 4.6L V8 | H11LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life | View on Amazon |
| HELLA Fits: 4.6L V8 | H3HD | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Bulb Technology: HalogenSocket Type Bulb: PK22S | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 4.6L V8 | H11XV | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| HELLA Fits: 4.6L V8 | H3100W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PK22S | View on Amazon |
| HELLA Fits: 4.6L V8 | H3P50 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenPerformance 50+ | View on Amazon |
| HELLA Fits: 4.6L V8 | H3130W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Halogen130 Watt | View on Amazon |
| HELLA Fits: 4.6L V8 | H320 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PK22S | View on Amazon |
| PHILIPS Fits: 4.6L V8 | H3PR | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Vision30% More Light | View on Amazon |
| PHILIPS Fits: 4.6L V8 | H3CV | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Crystal Vision UltraBright White Xenon-Look | View on Amazon |
| PHILIPS Fits: 4.6L V8 | H3CVP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Crystal Vision PlatinumUp to 60% More Light | View on Amazon |
| PILOT AUTOMOTIVE Fits: 4.6L V8 | WIH3BP | 🇺🇸 US 🇨🇦 CA | Driving And Fog LightEXTERIOR BULBS,FOG LIGHT - STANDARD - HYPERWHITE QUARTZ H3 Auxiliary - LAMP BULBS - COMPARE withoutRIGINAL | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H3ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver StarColor Temperature: 4000 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11SU | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star UltraColor Temperature: 4100 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Color Temperature: 4000 KVSilver Star | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11SZGP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXe GOLDBase Type: PGJ19 | View on Amazon |
| WAGNER Fits: 4.6L V8 | H3TVX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Truview PlusPK22S Base | View on Amazon |
| WAGNER Fits: 4.6L V8 | H3BLX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BritelitePK22S Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | 226971511 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Socket Type Bulb: PK22S | View on Amazon |
| HELLA Fits: 4.6L V8 | 226971531 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Socket Type Bulb: PX26DVerify Connector Before Ordering Some Systems May Require CANBUS Module | View on Amazon |
| PHILIPS Fits: 4.6L V8 | H3USLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Ultinon Sport LED | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11LEDSP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDBase Type: PGJ19-2 | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11LEDHP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED ULTRABase Type: PGJ19-2 | View on Amazon |
| WAGNER Fits: 4.6L V8 | H3LED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
Reduced Glare (for rain, fog, snow, or rural driving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | H3YL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 2900KHalogen | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 4.6L V8 | H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
| PILOT AUTOMOTIVE Popular Fits: 4.6L V8 | PLH3K | 🇺🇸 US 🇨🇦 CA | StandardHalogen | View on Amazon |
| PILOT AUTOMOTIVE Popular Fits: 4.6L V8 | XBH3B | 🇺🇸 US 🇨🇦 CA | Driving And Fog LightFOG LIGHT | View on Amazon |
| SYLVANIA Popular Fits: 4.6L V8 | H11 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: PGJ19-2 | View on Amazon |
| HELLA Fits: 4.6L V8 | H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PK22S | View on Amazon |
| PILOT AUTOMOTIVE Fits: 4.6L V8 | PLH355WPK | 🇺🇸 US 🇨🇦 CA | Driving And Fog LightEXTERIOR BULBS,FOG LIGHT - STANDARD - SINGLE PACK - COMPARE withoutRIGINAL | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: PK22Wattage: 55.00 W | View on Amazon |
| WAGNER Fits: 4.6L V8 | 1255H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontHalogen Capsule | View on Amazon |
| WAGNER Fits: 4.6L V8 | 1210H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Glass:Clear (T3-1/2),# of Filaments:1,Watts:55,Base:Pigtail (PK22S) | View on Amazon |
| WAGNER Fits: 4.6L V8 | 2470H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Glass:Clear (T3-1/2),# of Filaments:1,Watts:55,Base:Pigtail (PK22S) | View on Amazon |
| WAGNER Fits: 4.6L V8 | 1213H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Glass:Clear (T3-1/2),# of Filaments:1,Watts:55,Base:Pigtail (PK22S) | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | H324V | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with HID HeadlightsOEM | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H3SZ | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXeBase Type: PK22 | View on Amazon |
This table covers the bulbs in the fog and driving lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
37 Fog / Driving Lamp Bulb parts for the 2008 Cadillac STS come from 5 brands — SYLVANIA, HELLA, WAGNER and 2 other brands. The "Popular" part is SYLVANIA H11LL. Grades run from Extended Life through Standard Replacement; Extra Bright (improved visibility, but shorter life) is the most populated section, led by SYLVANIA, HELLA, PHILIPS and 2 other brands.
Fog / Driving Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.6L V8 | S2611 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalContact Terminal Material: Plastic | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.6L V8 | LWH110 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blue StreakHigh Temperature | View on Amazon |
| WALKER PRODUCTS Fits: 4.6L V8 | 2701120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Gender: Female | View on Amazon |
| WELLS Fits: 4.6L V8 | 1P3537 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Used with H11 BulbWiring Harness | View on Amazon |
This table covers the sockets that hold a Fog / Driving Lamp bulb. Typical signs include a flicker over bumps, melted plastic, or a bulb that will not stay seated. Dielectric grease on the contacts slows corrosion. Do not force a bulb into a heat-damaged socket.
4 Fog / Driving Lamp Socket parts for the 2008 Cadillac STS come from 3 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS S2611, STANDARD MOTOR PRODUCTS LWH110 and WALKER PRODUCTS 2701120 and the remaining parts above.
Glove Box Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.6L V8 | 19115808 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the bulbs in the glove-box lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
This group shows a single part: GM GENUINE 19115808.
Headlamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 4.6L V8 | H11LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life | View on Amazon |
| HELLA Fits: 4.6L V8 | 9005LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: P20D | View on Amazon |
| HELLA Fits: 4.6L V8 | H11LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-2 | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 9005LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life | View on Amazon |
| WAGNER Fits: 4.6L V8 | 1255H11LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 9005P50 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenPerformance 50+ | View on Amazon |
| HELLA Fits: 4.6L V8 | H11P50 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenPerformance 50+ | View on Amazon |
| HELLA Fits: 4.6L V8 | H1120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-2 | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 9005XV | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11XV | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 9005SU | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star UltraColor Temperature: 4100 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11SU | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star UltraColor Temperature: 4100 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 9005ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver StarColor Temperature: 4000 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Color Temperature: 4000 KVSilver Star | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 9005SZG | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXe GOLDColor Temperature: 4200 KV | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | H11SZGP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXe GOLDBase Type: PGJ19 | View on Amazon |
| WAGNER Fits: 4.6L V8 | 9005TVX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HID Look | View on Amazon |
| WAGNER Fits: 4.6L V8 | 9005BLX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life80% More Light | View on Amazon |
| WAGNER Fits: 4.6L V8 | H11BLX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BritelitePGJ19-2 Base | View on Amazon |
| WAGNER Fits: 4.6L V8 | H11TVX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Truview Plus1.733 Base | View on Amazon |
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | D1S4300K | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4300KSocket Type Bulb: PK32D-2 | View on Amazon |
| HELLA Fits: 4.6L V8 | D1S5000K | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 5000KSocket Type Bulb: PK32D-2 | View on Amazon |
| PHILIPS Fits: 4.6L V8 | D1S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Low Beamor Low Beamwith HID headlamps | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | D1S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Low BeamBase Model | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | D1SSZ | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver Star zXe | View on Amazon |
| ÜRO PARTS Fits: 4.6L V8 | D1S | 🇺🇸 US | 4300K | View on Amazon |
| WAGNER Fits: 4.6L V8 | D1S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Xenon Gas | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 9005SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
Reduced Glare (for rain, fog, snow, or rural driving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | 9005YL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Halogen2900K | View on Amazon |
| HELLA Fits: 4.6L V8 | H11YL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-2 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 9005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: P20D | View on Amazon |
| SYLVANIA Popular Fits: 4.6L V8 | 9005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: P20D | View on Amazon |
| SYLVANIA Popular Fits: 4.6L V8 | H11 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: PGJ19-2 | View on Amazon |
| WAGNER Popular Fits: 4.6L V8 | 1255H11 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Bulb Color: Clear | View on Amazon |
| ACDELCO Fits: 4.6L V8 | 19351924 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentBeam Type: High Beam | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 9005 | 🇺🇸 US 🇨🇦 CA | Leftwith Trade # 9005 | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 13503417 | 🇺🇸 US 🇨🇦 CA | Low BeamTrade # 11 | View on Amazon |
| HELLA Fits: 4.6L V8 | H11 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-2 or Socket Type Bulb: PGJY19-2 | View on Amazon |
| WAGNER Fits: 4.6L V8 | 9005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Voltage: 12.800 Volts (Direct Current) | View on Amazon |
| WAGNER Fits: 4.6L V8 | 9005L | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.6L V8 | 19433507 | 🇺🇸 US 🇨🇦 CA | Bulb Base Type: Right Angle Prefocus | View on Amazon |
This table covers the bulbs that light the headlamps. Typical signs include a dark lamp, a flicker over bumps, or a bulb that keeps failing on one side. Avoid touching a halogen capsule. Repeated failure in one socket is usually the socket or ground, not the bulb.
41 Headlamp Bulb parts for the 2008 Cadillac STS come from 7 brands — SYLVANIA, HELLA, WAGNER and 4 other brands. The "Popular" part is SYLVANIA H11LL. Extended Life, Extra Bright (improved visibility, but shorter life), HID (intense white light), LED (instant-on, long life, energy-saving), Reduced Glare (for rain, fog, snow, or rural driving) and Standard Replacement are all represented, and Extra Bright (improved visibility, but shorter life) alone accounts for 15 parts.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 4.6L V8 | 84783 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | H8/H11 HARNESS | View on Amazon |
| SKP Popular Fits: 4.6L V8 | SKS553 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Low Beamor Black and Blu | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 | S524 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Weather Resistant: YES | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 | HP3835 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 4.6L V8 | S553 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalContact Terminal Material: Metal | View on Amazon |
| WELLS Popular Fits: 4.6L V8 | 1P1032 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Low Beamwith 2 Terminalsor with 2 Terminal(s) | View on Amazon |
| ACDELCO Fits: 4.6L V8 | LS255 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| ACDELCO Fits: 4.6L V8 | PT2298 | 🇺🇸 US 🇨🇦 CA | GoldHeight (In): 1.5 in | View on Amazon |
| DORMAN Fits: 4.6L V8 | 84792 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Temperature SocketHigh Beam Headlight 9005 Bulb | View on Amazon |
| DORMAN Fits: 4.6L V8 | 85812 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black2-Wire Halogen High Beam Headlight 9005 Bulb | View on Amazon |
| DORMAN Fits: 4.6L V8 | 645993 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Low BeamHigh Temperature Harness | View on Amazon |
| DORMAN Fits: 4.6L V8 | 90803 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Low BeamCeramic Socket | View on Amazon |
| DORMAN Fits: 4.6L V8 | 90807 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | PT168 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | PT3800 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | PT3880 | 🇺🇸 US 🇨🇦 CA | Gray6-Way Female | View on Amazon |
| ROSTRA Fits: 4.6L V8 | 610023 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ROSTRA Fits: 4.6L V8 | 610001 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Factory Halogen HeadlightsLow Beam | View on Amazon |
| SKP Fits: 4.6L V8 | SKS524 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits with HID HeadlightsHigh Beam | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.6L V8 | HP3970 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Handypack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.6L V8 | S2611 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalContact Terminal Material: Plastic | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 4.6L V8 | CON67 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with High Beam Control | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 4.6L V8 | CON78 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Low Beamwith Factory Halogen Headlights | View on Amazon |
| WALKER PRODUCTS Fits: 4.6L V8 | 2701125 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Beam | View on Amazon |
| WALKER PRODUCTS Fits: 4.6L V8 | 2701120 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Gender: Female | View on Amazon |
| WELLS Fits: 4.6L V8 | 6S1047 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Gender: MaleWire Gauge Measurement: 18 | View on Amazon |
| WELLS Fits: 4.6L V8 | 1P3539 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Beamwith Bulb # 9005 | View on Amazon |
This table covers the sockets that hold a headlamp bulb in the housing. Typical signs include a flicker over bumps, melted plastic, or a bulb that will not stay seated. Dielectric grease on the contacts slows corrosion. Do not force a bulb into a heat-damaged socket.
27 Headlamp Socket parts for the 2008 Cadillac STS come from 9 brands — DORMAN, STANDARD MOTOR PRODUCTS, WELLS and 6 other brands. The "Popular" part is DORMAN 84783. A list this long means Headlamp Socket applications vary by configuration — the notes carry the qualifiers.
LED Bulb Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: 4.6L V8 | CB900590069012 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDFor 9005 / 9006 / 9012 Bulb | View on Amazon |
| WAGNER Fits: 4.6L V8 | CBH8H11H16 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | For H8 / H11 / H16 Bulb | View on Amazon |
| WAGNER Fits: 4.6L V8 | CBH1H3 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | For H1 / H3 Bulb | View on Amazon |
This table covers the LED Bulb adapters.
3 LED Bulb Adapter parts for the 2008 Cadillac STS come from WAGNER.
This group includes WAGNER CB900590069012, WAGNER CBH8H11H16 and WAGNER CBH1H3.
License Plate Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 4.6L V8 | 17177LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 921LED5K | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED Miniature Bulb with Color Temperature of 5000KSocket Type Bulb: SV8.5-8 | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 13500812 | 🇺🇸 US 🇨🇦 CA | TRADE # W5WLL | View on Amazon |
| HELLA Fits: 4.6L V8 | 2825BL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 4.6L V8 | 17177 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
This table covers the bulbs that light the license plate. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
10 License Plate Lamp Bulb parts are listed for the 2008 Cadillac STS, from SYLVANIA, HELLA, WAGNER and 1 other brand. HELLA 921LED5K carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 2825LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 2825ST is listed in this group.
LED (instant-on, long life, energy-saving): 2 parts, from HELLA and SYLVANIA. A representative part number is HELLA 921LED5K.
The Standard Replacement section: 5 options from HELLA, GM GENUINE, SYLVANIA and 1 other brand. HELLA 2825 is listed in this group.
Map / Reading Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 4.6L V8 | 9442441 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentTerminal Type: Pressure Contact | View on Amazon |
| HELLA Fits: 4.6L V8 | 168 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| PHILIPS Fits: 4.6L V8 | PC168 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the bulbs in the map / reading lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
3 Map / Reading Light Bulb parts are listed for the 2008 Cadillac STS, from ACDELCO, HELLA and PHILIPS.
This group includes ACDELCO 9442441, HELLA 168 and PHILIPS PC168.
Overhead Console Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 4.6L V8 | 9442441 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentTerminal Type: Pressure Contact | View on Amazon |
This table covers the replacement bulbs for the Overhead Console Light. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
One part is listed for the 2008 Cadillac STS — ACDELCO 9442441.
Parking Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 4.6L V8 | 3757NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 3757ALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeAmber | View on Amazon |
| WAGNER Fits: 4.6L V8 | 3757NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.6L V8 | W5WB50X2 | 🇺🇸 US 🇨🇦 CA | FrontTRADE # W5WB50X2 | View on Amazon |
| HELLA Fits: 4.6L V8 | 3757A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentAverage Rated Life: 600.0 HR | View on Amazon |
This table covers the bulbs in the parking lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
5 Parking Lamp Bulb parts for the 2008 Cadillac STS come from 5 brands — PHILIPS, SYLVANIA, WAGNER and 2 other brands. The "Popular" part is PHILIPS 3757NALL.
Extended Life: 3 parts, from PHILIPS, SYLVANIA and WAGNER. A representative part number is PHILIPS 3757NALL.
Standard Replacement: 2 parts, from GM GENUINE and HELLA. A representative part number is GM GENUINE W5WB50X2.
Part numbers include PHILIPS 3757NALL and SYLVANIA 3757ALL, among others listed above.
Side Marker Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | 194LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 194LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.2d | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 4.6L V8 | 194LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBulb Type: T-3-1/4 Bulb 13/32 (10mm) Diameter | View on Amazon |
| WAGNER Fits: 4.6L V8 | 17177LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 194ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Color Temperature: 3200 KVSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 194BSL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDBlue | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 194SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| WAGNER Fits: 4.6L V8 | 194LEDW | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDGlass:Clear (T3-1/4), Number of Filaments:1, Watts:3.78 (0.16 cp), Base:Wedge (W2.1x9.5d) | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Popular Fits: 4.6L V8 | 194 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Brightness: 2.0 CPIncandescent | View on Amazon |
| SYLVANIA Popular Fits: 4.6L V8 | 194 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.2dWattage: 3.80 W | View on Amazon |
| WAGNER Popular Fits: 4.6L V8 | 194 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Wedge Base3.780 Watt | View on Amazon |
| HELLA Fits: 4.6L V8 | 2825BL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 4.6L V8 | 17177 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
This table covers the bulbs in the side-marker lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
18 Side Marker Light Bulb parts are listed for the 2008 Cadillac STS, from SYLVANIA, WAGNER and HELLA. HELLA 2825 carries the "Popular" badge.
The Extended Life section: 5 options from SYLVANIA, WAGNER and HELLA. HELLA 194LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 2 options from SYLVANIA. SYLVANIA 2825ST is listed in this group.
LED (instant-on, long life, energy-saving): 4 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 194BSL.
The Standard Replacement section: 7 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.
Step / Courtesy Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 4.6L V8 | 906LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.2d | View on Amazon |
| WAGNER Fits: 4.6L V8 | 906LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeWedge Base | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 4.6L V8 | 906 | 🇺🇸 US 🇨🇦 CA | Step or Courtesy LightCourtesy | View on Amazon |
| ACDELCO Fits: 4.6L V8 | L906 | 🇺🇸 US 🇨🇦 CA | GoldTerminal Type: Spade | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 19115808 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SYLVANIA Fits: 4.6L V8 | 906 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.2dWattage: 9.00 W | View on Amazon |
| WAGNER Fits: 4.6L V8 | 906 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Wedge Base8.970 Watt | View on Amazon |
This table covers the bulbs in the step and courtesy lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
7 Step / Courtesy Light Bulb parts are listed for the 2008 Cadillac STS, from SYLVANIA, WAGNER, PHILIPS and 2 other brands. SYLVANIA 906LL carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 906LL is listed in this group.
The Standard Replacement section: 5 options from PHILIPS, ACDELCO, GM GENUINE and 2 other brands. PHILIPS 906 is listed in this group.
Listed part numbers: SYLVANIA 906LL and PHILIPS 906, plus the other parts above.
Tail Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 4.6L V8 | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
This table covers the bulbs in the tail lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
This group shows a single part: HELLA 2825.
Trunk / Cargo Area Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 4.6L V8 | 2112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the bulbs in the trunk or cargo-area lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
This group shows a single part: PHILIPS 2112.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 4.6L V8 | 3757ALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeAmber | View on Amazon |
| WAGNER Fits: 4.6L V8 | 3757NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 4.6L V8 | 3757A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentAverage Rated Life: 600.0 HR | View on Amazon |
| PILOT AUTOMOTIVE Popular Fits: 4.6L V8 | PL3757APK | 🇺🇸 US 🇨🇦 CA | FrontExterior Bulbs,Standard | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 13500812 | 🇺🇸 US 🇨🇦 CA | TRADE # W5WLL | View on Amazon |
| GM GENUINE Fits: 4.6L V8 | 23757NAK | 🇺🇸 US 🇨🇦 CA | Natural Amber | View on Amazon |
This table covers the bulbs in the turn-signal lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
6 Turn Signal Lamp Bulb parts are listed for the 2008 Cadillac STS, from GM GENUINE, SYLVANIA, WAGNER and 2 other brands. HELLA 3757A carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 3757ALL is listed in this group.
The Standard Replacement section: 4 options from GM GENUINE, HELLA and PILOT AUTOMOTIVE. HELLA 3757A is listed in this group.
Listed part numbers: HELLA 3757A, SYLVANIA 3757ALL and WAGNER 3757NALL, plus the other parts above.
Vanity Mirror / Sun Visor Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.6L V8 | L7065 | 🇺🇸 US 🇨🇦 CA | Terminal Type: Bullet | View on Amazon |
This table covers the replacement bulbs for the Vanity Mirror / Sun Visor Light. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
This group shows a single part: GM GENUINE L7065.
Buying Electrical Bulb & Socket Parts for a 2008 Cadillac STS
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Match the engine first. Every electrical bulb & socket part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Headlamp Bulb and Fog / Driving Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2008 Cadillac STS?
Our catalog currently lists 189 electrical bulb & socket parts for the 2008 Cadillac STS across 19 subcategories and 15 brands, covering all 3 engine options (3.6L V6, 4.4L V8 Supercharged and 4.6L V8). Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2008 Cadillac STS engines?
Yes. Every electrical bulb & socket part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical bulb & socket problems on a 2008 Cadillac STS?
Common symptoms include a lamp that flickers over bumps, melted or discolored socket plastic, or bulbs that keep failing early on one side. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2008 Cadillac STS was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2008 Cadillac STS?
First match the engine — each row shows which engine(s) the part fits. Then repeated bulb failure in one position usually means a socket or ground problem, not bad bulbs — replace the socket rather than chase it. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2008 Cadillac STS
Electrical Bulb & Socket Parts for Other Cadillac STS Years
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