90 Electrical bulb & socket parts are listed for the 2021 Ram 3500, in 18 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Ram 3500, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 35 parts of the 90 listed are Fog / Driving Lamp Bulb (15 parts), Tail Lamp Bulb (11 parts) and Headlamp Bulb (9 parts). The other 15 part types cover the remaining 55 parts.
The 2021 Ram 3500 was sold with both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. All 90 parts on this page fit every engine.
The most listed brands for 2021 Ram 3500 electrical bulb & socket parts are HELLA (31 parts), WAGNER (28 parts) and PHILIPS (11 parts), plus 6 more brands. Quality grades include Standard Replacement, Extended Life and Extra Bright.
17 parts on this 2021 Ram 3500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PHILIPS 1156LL (Back Up / Reverse Lamp Bulb) and HELLA 3157 (Brake 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 |
|---|---|---|---|---|
| PHILIPS Popular Fits: all 2021 3500 engines | 1156LL | 🇺🇸 US 🇨🇦 CA | Longer Life | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 921LL | 🇺🇸 US 🇨🇦 CA | IncandescentLong Life | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7440LL | 🇺🇸 US 🇨🇦 CA | Long LifeSingle Contact Wedge Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: all 2021 3500 engines | 7440WLED | 🇺🇸 US 🇨🇦 CA | LEDWhite | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2021 3500 engines | 921 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7507 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7440 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W3X16D | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7440 | 🇺🇸 US 🇨🇦 CA | Single Contact Wedge Base21.000 Watt | 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 2021 Ram 3500, from HELLA, WAGNER and PHILIPS. PHILIPS 1156LL carries the "Popular" badge. All of them fit every engine offered in the 2021 3500.
The Extended Life section lists 3 options from PHILIPS, HELLA and WAGNER — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. PHILIPS 1156LL is listed in this group.
In the LED (instant-on, long life, energy-saving) grade, WAGNER 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 WAGNER 7440WLED.
The Standard Replacement section lists 4 options from HELLA and WAGNER — built to original-equipment specification. HELLA 921 is listed in this group.
This group includes PHILIPS 1156LL, HELLA 921LL and WAGNER 7440LL and the remaining parts above.
Brake Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 3157LL | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7443LL | 🇺🇸 US 🇨🇦 CA | Long LifeDouble Contact Wedge Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 3500 engines | 7440RLED | 🇺🇸 US 🇨🇦 CA | Ultinon LEDRed | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7443LEDW | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2021 3500 engines | 3157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/7W | View on Amazon |
| WAGNER Popular Fits: all 2021 3500 engines | 7443 | 🇺🇸 US 🇨🇦 CA | Double Contact Wedge Base21.000 Watt | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7528 | 🇺🇸 US 🇨🇦 CA | Incandescent21/5W | View on Amazon |
This table covers the bulbs in the stop 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 Brake Light Bulb parts are listed for the 2021 Ram 3500, from HELLA, WAGNER and PHILIPS. HELLA 3157 carries the "Popular" badge. All of them fit every engine offered in the 2021 3500.
The Extended Life section: 2 options from HELLA and WAGNER. HELLA 3157LL is listed in this group.
LED (instant-on, long life, energy-saving): 2 parts, from PHILIPS and WAGNER. A representative part number is PHILIPS 7440RLED.
The Standard Replacement section: 3 options from HELLA and WAGNER. HELLA 3157 is listed in this group.
Part numbers include HELLA 3157, HELLA 3157LL and WAGNER 7443LL, among others listed above.
Brake Light Bulb - High Mount
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 921LL | 🇺🇸 US 🇨🇦 CA | IncandescentLong Life | View on Amazon |
| HELLA Fits: all 2021 3500 engines | DE3175LL | 🇺🇸 US 🇨🇦 CA | IncandescentLong Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2021 3500 engines | 2825 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 921 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 921NA | 🇺🇸 US 🇨🇦 CA | IncandescentNatural Amber | View on Amazon |
This table covers the bulbs in the high-mount stop lamp. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
HELLA supplies the 5 Brake Light Bulb - High Mount parts for the 2021 Ram 3500. HELLA 2825 carries the "Popular" badge. All of them fit every engine offered in the 2021 3500.
The Extended Life section: 2 options from HELLA. HELLA 921LL is listed in this group.
The Standard Replacement section: 3 options from HELLA. HELLA 2825 is listed in this group.
Part numbers include HELLA 2825, HELLA 921LL and HELLA DE3175LL, among others listed above.
Brake Light Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 3500 engines | 645118 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: Female | View on Amazon |
This table covers the sockets that hold a Brake Light 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.
One part is listed for the 2021 Ram 3500 — DORMAN 645118.
Dome Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 3500 engines | 578LL | 🇺🇸 US 🇨🇦 CA | Longer Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 912 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
2 Dome Light Bulb parts are listed for the 2021 Ram 3500, from PHILIPS and HELLA. All of them fit every engine offered in the 2021 3500.
The Extended Life section: 1 option from PHILIPS. PHILIPS 578LL is listed in this group.
The Standard Replacement section: 1 option from HELLA. HELLA 912 is listed in this group.
Part numbers include PHILIPS 578LL and HELLA 912.
Fog / Driving Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: all 2021 3500 engines | H11LL | 🇺🇸 US 🇨🇦 CA | Long Life | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 1255H11LL | 🇺🇸 US 🇨🇦 CA | Long Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2021 3500 engines | H11XV | 🇺🇸 US 🇨🇦 CA | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA Fits: all 2021 3500 engines | H11SU | 🇺🇸 US 🇨🇦 CA | Silver Star UltraColor Temperature: 4100 KV | View on Amazon |
| SYLVANIA Fits: all 2021 3500 engines | H11ST | 🇺🇸 US 🇨🇦 CA | Color Temperature: 4000 KVSilver Star | View on Amazon |
| SYLVANIA Fits: all 2021 3500 engines | H11SZGP | 🇺🇸 US 🇨🇦 CA | Silver Star zXe GOLDBase Type: PGJ19 | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | H11BLX | 🇺🇸 US 🇨🇦 CA | BritelitePGJ19-2 Base | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | H11TVX | 🇺🇸 US 🇨🇦 CA | Truview Plus1.733 Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2021 3500 engines | H11LEDSP | 🇺🇸 US 🇨🇦 CA | LEDBase Type: PGJ19-2 | View on Amazon |
| SYLVANIA Fits: all 2021 3500 engines | H11LEDHP | 🇺🇸 US 🇨🇦 CA | LED ULTRABase Type: PGJ19-2 | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | H11LED | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2021 3500 engines | 9006 | 🇺🇸 US 🇨🇦 CA | HalogenSocket Type Bulb: P22D or Socket Type Bulb: PG13 | View on Amazon |
| WAGNER Popular Fits: all 2021 3500 engines | 1255H11 | 🇺🇸 US 🇨🇦 CA | Bulb Color: Clear | View on Amazon |
| HELLA Fits: all 2021 3500 engines | H16 | 🇺🇸 US 🇨🇦 CA | HalogenSocket Type Bulb: PGJ19-3 | View on Amazon |
| SYLVANIA Fits: all 2021 3500 engines | H11 | 🇺🇸 US 🇨🇦 CA | Base Type: PGJ19-2 | 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.
15 Fog / Driving Lamp Bulb parts for the 2021 Ram 3500 come from 3 brands — SYLVANIA, WAGNER and HELLA. The "Popular" part is SYLVANIA H11LL. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA H11LL.
In the Extra Bright (improved visibility, but shorter life) grade, SYLVANIA and WAGNER supply 6 parts: grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA H11XV.
The LED (instant-on, long life, energy-saving) section: 3 options from SYLVANIA and WAGNER. SYLVANIA H11LEDSP is listed in this group.
Standard Replacement: 4 parts, from HELLA, WAGNER and SYLVANIA. A representative part number is HELLA 9006.
Headlamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: all 2021 3500 engines | 1255H11LL | 🇺🇸 US 🇨🇦 CA | Long Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: all 2021 3500 engines | 9005TVX | 🇺🇸 US 🇨🇦 CA | HID Look | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 9005BLX | 🇺🇸 US 🇨🇦 CA | Long Life80% More Light | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | H11BLX | 🇺🇸 US 🇨🇦 CA | BritelitePGJ19-2 Base | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | H11TVX | 🇺🇸 US 🇨🇦 CA | Truview Plus1.733 Base | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular Fits: all 2021 3500 engines | 9005 | 🇺🇸 US 🇨🇦 CA | Voltage: 12.800 Volts (Direct Current) | View on Amazon |
| WAGNER Popular Fits: all 2021 3500 engines | 1255H11 | 🇺🇸 US 🇨🇦 CA | Bulb Color: Clear | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 9003 | 🇺🇸 US 🇨🇦 CA | HalogenSocket Type Bulb: P43T | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 9005L | 🇺🇸 US 🇨🇦 CA | Long Life | 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.
9 Headlamp Bulb parts for the 2021 Ram 3500 come from 2 brands — WAGNER and HELLA. The "Popular" part is WAGNER 9005. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Extended Life: 1 part, from WAGNER. A representative part number is WAGNER 1255H11LL.
Extra Bright (improved visibility, but shorter life): 4 parts, from WAGNER. A representative part number is WAGNER 9005TVX.
Standard Replacement: 4 parts, from WAGNER and HELLA. A representative part number is WAGNER 9005.
Part numbers include WAGNER 9005, WAGNER 1255H11LL and WAGNER 9005TVX, among others listed above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2021 3500 engines | HP3835 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: all 2021 3500 engines | S553 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalContact Terminal Material: Metal | View on Amazon |
| ACDELCO Fits: all 2021 3500 engines | LS255 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| ACDELCO Fits: all 2021 3500 engines | PT2298 | 🇺🇸 US 🇨🇦 CA | GoldHeight (In): 1.5 in | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 3500 engines | HP3970 | 🇺🇸 US 🇨🇦 CA | Handypack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 3500 engines | S524 | 🇺🇸 US 🇨🇦 CA | Weather Resistant: YES | View on Amazon |
| WALKER PRODUCTS Fits: all 2021 3500 engines | 2701125 | 🇺🇸 US 🇨🇦 CA | High Beam | 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.
7 Headlamp Socket parts for the 2021 Ram 3500 come from 3 brands — STANDARD MOTOR PRODUCTS, ACDELCO and WALKER PRODUCTS. The "Popular" part is STANDARD MOTOR PRODUCTS HP3835. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Listed part numbers: STANDARD MOTOR PRODUCTS HP3835, STANDARD MOTOR PRODUCTS S553 and ACDELCO LS255, plus the other parts above.
LED Bulb Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: all 2021 3500 engines | CB900590069012 | 🇺🇸 US 🇨🇦 CA | LEDFor 9005 / 9006 / 9012 Bulb | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | CBH8H11H16 | 🇺🇸 US 🇨🇦 CA | For H8 / H11 / H16 Bulb | View on Amazon |
This table covers the LED Bulb adapters.
2 LED Bulb Adapter parts for the 2021 Ram 3500 come from WAGNER. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Listed part numbers: WAGNER CB900590069012 and WAGNER CBH8H11H16.
License Plate Lamp Bulb
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 3500 engines | 1157WLED | 🇺🇸 US 🇨🇦 CA | Ultinon LEDWhite | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 2825 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
2 License Plate Lamp Bulb parts are listed for the 2021 Ram 3500, from PHILIPS and HELLA. All of them fit every engine offered in the 2021 3500.
LED (instant-on, long life, energy-saving): 1 part, from PHILIPS. A representative part number is PHILIPS 1157WLED.
The Standard Replacement section: 1 option from HELLA. HELLA 2825 is listed in this group.
Listed part numbers: PHILIPS 1157WLED and HELLA 2825.
Map / Reading Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 912 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| PHILIPS Fits: all 2021 3500 engines | 2122 | 🇺🇸 US 🇨🇦 CA | 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.
2 Map / Reading Light Bulb parts are listed for the 2021 Ram 3500, from HELLA and PHILIPS. All of them fit every engine offered in the 2021 3500.
Part numbers include HELLA 912 and PHILIPS 2122.
Parking Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 3500 engines | 7444NALL | 🇺🇸 US 🇨🇦 CA | Longer LifeNatural Amber | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7444NALL | 🇺🇸 US 🇨🇦 CA | Long LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: all 2021 3500 engines | 7444NA | 🇺🇸 US 🇨🇦 CA | Natural Amber | 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.
3 Parking Lamp Bulb parts for the 2021 Ram 3500 come from 2 brands — WAGNER and PHILIPS. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Extended Life: 2 parts, from PHILIPS and WAGNER. A representative part number is PHILIPS 7444NALL.
Standard Replacement: 1 part, from WAGNER. A representative part number is WAGNER 7444NA.
This group includes PHILIPS 7444NALL and WAGNER 7444NA and the remaining parts above.
Roof Marker & Identification Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 3500 engines | 194NALL | 🇺🇸 US 🇨🇦 CA | Longer LifeNatural Amber | View on Amazon |
This table covers the replacement bulbs for the Roof Marker & Identification 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: PHILIPS 194NALL.
Side Marker Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 3157LL | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 2825 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 3157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/7W | 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.
HELLA supplies the 3 Side Marker Light Bulb parts for the 2021 Ram 3500. All of them fit every engine offered in the 2021 3500.
The Extended Life section: 1 option from HELLA. HELLA 3157LL is listed in this group.
The Standard Replacement section: 2 options from HELLA. HELLA 2825 is listed in this group.
Part numbers include HELLA 3157LL, HELLA 2825 and HELLA 3157.
Tail Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2021 3500 engines | 3157LL | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7443LL | 🇺🇸 US 🇨🇦 CA | Long LifeDouble Contact Wedge Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2021 3500 engines | 7440RLED | 🇺🇸 US 🇨🇦 CA | Ultinon LEDRed | View on Amazon |
| PHILIPS Fits: all 2021 3500 engines | 3157RLED | 🇺🇸 US 🇨🇦 CA | Ultinon LEDRed | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7443LEDW | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2021 3500 engines | 2825 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Popular Fits: all 2021 3500 engines | 3157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/7W | View on Amazon |
| WAGNER Popular Fits: all 2021 3500 engines | 7443 | 🇺🇸 US 🇨🇦 CA | Double Contact Wedge Base21.000 Watt | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7528 | 🇺🇸 US 🇨🇦 CA | Incandescent21/5W | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7440 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W3X16D | View on Amazon |
| PHILIPS Fits: all 2021 3500 engines | 12174SV | 🇺🇸 US 🇨🇦 CA | Lower | 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.
11 Tail Lamp Bulb parts for the 2021 Ram 3500 come from 3 brands — HELLA, WAGNER and PHILIPS. The "Popular" part is HELLA 2825. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Extended Life: 2 parts, from HELLA and WAGNER. A representative part number is HELLA 3157LL.
The LED (instant-on, long life, energy-saving) section: 3 options from PHILIPS and WAGNER. PHILIPS 7440RLED is listed in this group.
Standard Replacement: 6 parts, from HELLA, WAGNER and PHILIPS. A representative part number is HELLA 2825.
Tail Lamp Socket / Connector Plate
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 3500 engines | 645118 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: Female | View on Amazon |
| WELLS Fits: all 2021 3500 engines | 1P3339 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Tail Lamp Socket / Connector plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts.
2 Tail Lamp Socket / Connector Plate parts for the 2021 Ram 3500 come from 2 brands — DORMAN and WELLS. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Listed part numbers: DORMAN 645118 and WELLS 1P3339.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: all 2021 3500 engines | 7444NALL | 🇺🇸 US 🇨🇦 CA | Longer LifeNatural Amber | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 921LL | 🇺🇸 US 🇨🇦 CA | IncandescentLong Life | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7444NALL | 🇺🇸 US 🇨🇦 CA | Long LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2021 3500 engines | 921 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7507 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 2357NA | 🇺🇸 US 🇨🇦 CA | IncandescentBulb Material Color: Amber | View on Amazon |
| HELLA Fits: all 2021 3500 engines | 7440NA | 🇺🇸 US 🇨🇦 CA | IncandescentNatural Amber | View on Amazon |
| WAGNER Fits: all 2021 3500 engines | 7444NA | 🇺🇸 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.
8 Turn Signal Lamp Bulb parts are listed for the 2021 Ram 3500, from HELLA, WAGNER and PHILIPS. PHILIPS 7444NALL carries the "Popular" badge. All of them fit every engine offered in the 2021 3500.
The Extended Life section: 3 options from PHILIPS, HELLA and WAGNER. PHILIPS 7444NALL is listed in this group.
The Standard Replacement section: 5 options from HELLA and WAGNER. HELLA 921 is listed in this group.
Part numbers include PHILIPS 7444NALL and HELLA 921LL, among others listed above.
Turn Signal Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 3500 engines | 645118 | 🇺🇸 US 🇨🇦 CA | Terminal Gender: Female | View on Amazon |
| WELLS Fits: all 2021 3500 engines | 1P3339 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the sockets that hold a Turn Signal 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.
2 Turn Signal Lamp Socket parts are listed for the 2021 Ram 3500, from DORMAN and WELLS. All of them fit every engine offered in the 2021 3500.
Part numbers include DORMAN 645118 and WELLS 1P3339.
Buying Electrical Bulb & Socket Parts for a 2021 Ram 3500
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- You do not need to pick an engine: every electrical bulb & socket part on this page fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
- 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: Fog / Driving Lamp Bulb and Tail Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2021 Ram 3500?
Our catalog currently lists 90 electrical bulb & socket parts for the 2021 Ram 3500 across 18 subcategories and 9 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2021 Ram 3500 engines?
No. On this page every electrical bulb & socket part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical bulb & socket problems on a 2021 Ram 3500?
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 2021 Ram 3500 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 2021 Ram 3500?
Every part on this page already fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. 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 2021 Ram 3500
Electrical Bulb & Socket Parts for Other Ram 3500 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.