This page lists 75 electrical bulb & socket parts for the 2018 Audi A3, across 15 part types, covering all 4 engine options (1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 1.8L L4 Turbocharged and 2.0L L4 Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
The bulb and socket system on the 2018 Audi A3 covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. The largest groups are Dome Light Bulb (9 parts), Door Panel Light Bulb (9 parts) and Trunk / Cargo Area Light Bulb (9 parts). The other 12 part types cover the remaining 48 parts.
The 2018 Audi A3 was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
8 brands supply electrical bulb & socket parts for the 2018 Audi A3, led by SYLVANIA (26 parts), WAGNER (22 parts) and PHILIPS (10 parts), plus 5 more brands. Quality grades include Standard Replacement, Extended Life and LED.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Audi A3. 17 parts have it, including PHILIPS H8 (Cornering Lamp Bulb) and SYLVANIA 2825LL (Dome Light Bulb). Each part number opens a page with every vehicle that part fits.
Back Up / Reverse Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.4L L4 Turbocharged, 1.8L L4 Turbocharged | H6W | 🇲🇽 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.
This group shows a single part: PHILIPS H6W.
Brake Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.4L L4 Turbocharged, 1.8L L4 Turbocharged | 7440RLED | 🇲🇽 MX | Ultinon LEDRed | 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.
This group shows a single part: PHILIPS 7440RLED.
Cornering Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 1.8L L4 Turbocharged | H8 | 🇲🇽 MX | with HID headlamps | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 Turbocharged | 1235H8 | 🇲🇽 MX | with HID Headlights | View on Amazon |
| HELLA Fits: 1.8L L4 Turbocharged | H8 | 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-1 | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | H8 | 🇲🇽 MX | Base Type: PGJ19-1Wattage: 35.00 W | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | H8FV | 🇲🇽 MX | Fog Vision | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | H8SZ | 🇲🇽 MX | Silver Star zXeBlue | View on Amazon |
This table covers the replacement bulbs for the Cornering 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 Cornering Lamp Bulb parts for the 2018 Audi A3 come from 4 brands — SYLVANIA, PHILIPS, WAGNER and 1 other brand. The "Popular" part is PHILIPS H8.
Listed part numbers: PHILIPS H8 and WAGNER 1235H8, plus the other parts above.
Dome Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 Turbocharged | 2825LL | 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825ST | 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825SL | 🇲🇽 MX | LEDCool White | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: 1.8L L4 Turbocharged | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 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.
9 Dome Light Bulb parts for the 2018 Audi A3 come from 3 brands — SYLVANIA, WAGNER and HELLA. The "Popular" part is SYLVANIA 2825LL.
In the Extended Life grade, SYLVANIA and WAGNER supply 2 parts: grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA 2825LL.
In the Extra Bright (improved visibility, but shorter life) grade, SYLVANIA supplies 1 part: 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 2825ST.
The LED (instant-on, long life, energy-saving) section lists 2 options from SYLVANIA and WAGNER — grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. SYLVANIA 2825SL is listed in this group.
In the Standard Replacement grade, HELLA, SYLVANIA and WAGNER supply 4 parts: built to original-equipment specification. A representative part number is HELLA 2825.
This group includes SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST and the remaining parts above.
Door Panel Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 Turbocharged | 2825LL | 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825ST | 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825SL | 🇲🇽 MX | LEDCool White | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: 1.8L L4 Turbocharged | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
This table covers the replacement bulbs for the Door Panel 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.
9 Door Panel Light Bulb parts are listed for the 2018 Audi A3, from SYLVANIA, WAGNER and HELLA. SYLVANIA 2825LL 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 SYLVANIA and WAGNER. A representative part number is SYLVANIA 2825SL.
The Standard Replacement section: 4 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.
This group includes SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST and the remaining parts above.
Fog / Driving Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 Turbocharged | H21W | 🇲🇽 MX | RearHalogen | 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.
One part is listed for the 2018 Audi A3 — PHILIPS H21W.
Glove Box Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 Turbocharged | 2825LL | 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825ST | 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825SL | 🇲🇽 MX | LEDCool White | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular Fits: 1.8L L4 Turbocharged | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | 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.
7 Glove Box Light Bulb parts are listed for the 2018 Audi A3, from SYLVANIA and WAGNER. SYLVANIA 2825LL 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 SYLVANIA and WAGNER. A representative part number is SYLVANIA 2825SL.
The Standard Replacement section: 2 options from WAGNER and SYLVANIA. WAGNER 17177 is listed in this group.
This group includes SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST and the remaining parts above.
Headlamp Bulb
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 1.8L L4 Turbocharged | D3S4300K | 🇲🇽 MX | 4300KSocket Type Bulb: PK32D-5 | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | D5S | 🇲🇽 MX | High Beam and Low Beamwith HID Headlights | View on Amazon |
| ÜRO PARTS Fits: 1.8L L4 Turbocharged | D5S | 🇲🇽 MX | High Beam and Low BeamXenon (12V - 25W) | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | D5S | 🇲🇽 MX | High Beam and Low BeamHid Type | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 1.8L L4 Turbocharged | H8 | 🇲🇽 MX | High Beam | View on Amazon |
| PHILIPS Popular Fits: 1.8L L4 Turbocharged | H15 | 🇲🇽 MX | High Beamwith Halogen Capsule Headlamps | 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.
6 Headlamp Bulb parts are listed for the 2018 Audi A3, from PHILIPS, HELLA, SYLVANIA and 2 other brands. PHILIPS H8 carries the "Popular" badge.
The HID (intense white light) section lists 4 options from HELLA, SYLVANIA, ÜRO PARTS and 1 other brand — grouped under the catalog's "HID (intense white light)" designation — the notes column spells out what sets them apart. HELLA D3S4300K is listed in this group.
The Standard Replacement section: 2 options from PHILIPS. PHILIPS H8 is listed in this group.
Part numbers include PHILIPS H8, HELLA D3S4300K and SYLVANIA D5S, among others listed above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 1.8L L4 Turbocharged | HP3835 | 🇲🇽 MX | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 1.8L L4 Turbocharged | S553 | 🇲🇽 MX | Connector Shape: OvalContact Terminal Material: Metal | View on Amazon |
| ACDELCO Fits: 1.8L L4 Turbocharged | PT2298 | 🇺🇸 US 🇨🇦 CA | GoldHeight (In): 1.5 in | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | HP4355 | 🇲🇽 MX | Handy PackBlack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 Turbocharged | S900 | 🇲🇽 MX | Connector Shape: Rectangleblack | View on Amazon |
| ÜRO PARTS Fits: 1.8L L4 Turbocharged | 6R0973735 | 🇲🇽 MX | 10 pin black connector | View on Amazon |
| WELLS Fits: 1.8L L4 Turbocharged | 1P1444 | 🇲🇽 MX | Terminal Gender: Female | 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 are listed for the 2018 Audi A3, from STANDARD MOTOR PRODUCTS, ACDELCO, ÜRO PARTS and 1 other brand. STANDARD MOTOR PRODUCTS HP3835 carries the "Popular" badge.
Part numbers include STANDARD MOTOR PRODUCTS HP3835, STANDARD MOTOR PRODUCTS S553 and ACDELCO PT2298, among others listed above.
LED Bulb Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: 1.8L L4 Turbocharged | CBH8H11H16 | 🇲🇽 MX | For H8 / H11 / H16 Bulb | View on Amazon |
This table covers the LED Bulb adapters.
One part is listed for the 2018 Audi A3 — WAGNER CBH8H11H16.
Map / Reading Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 Turbocharged | 2825LL | 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825ST | 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825SL | 🇲🇽 MX | LEDCool White | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular Fits: 1.8L L4 Turbocharged | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | 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.
7 Map / Reading Light Bulb parts for the 2018 Audi A3 come from 2 brands — SYLVANIA and WAGNER. The "Popular" part is SYLVANIA 2825LL.
Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 2825LL.
Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825ST.
The LED (instant-on, long life, energy-saving) section: 2 options from SYLVANIA and WAGNER. SYLVANIA 2825SL is listed in this group.
Standard Replacement: 2 parts, from WAGNER and SYLVANIA. A representative part number is WAGNER 17177.
Listed part numbers: SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST, plus the other parts above.
Tail Lamp Bulb
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 Turbocharged | 7440RLED | 🇲🇽 MX | Ultinon LEDRed | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 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.
2 Tail Lamp Bulb parts are listed for the 2018 Audi A3, from PHILIPS and HELLA.
LED (instant-on, long life, energy-saving): 1 part, from PHILIPS. A representative part number is PHILIPS 7440RLED.
The Standard Replacement section: 1 option from HELLA. HELLA 2825 is listed in this group.
This group includes PHILIPS 7440RLED and HELLA 2825.
Trunk / Cargo Area Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 Turbocharged | 2825LL | 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825ST | 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825SL | 🇲🇽 MX | LEDCool White | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA Fits: 1.8L L4 Turbocharged | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 2825 | 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | 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.
9 Trunk / Cargo Area Light Bulb parts are listed for the 2018 Audi A3, from SYLVANIA, WAGNER and HELLA. SYLVANIA 2825LL 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 SYLVANIA and WAGNER. A representative part number is SYLVANIA 2825SL.
The Standard Replacement section: 4 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.
This group includes SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST and the remaining parts above.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 1.8L L4 Turbocharged | 12396NALL | 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 64132LL | 🇲🇽 MX | Long Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 Turbocharged | 12174NA | 🇲🇽 MX | Natural Amber | View on Amazon |
| SYLVANIA Fits: 1.8L L4 Turbocharged | 64132 | 🇲🇽 MX | Frontwith HID Headlights | View on Amazon |
| WAGNER Fits: 1.8L L4 Turbocharged | 68161 | 🇲🇽 MX | Front | 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.
5 Turn Signal Lamp Bulb parts for the 2018 Audi A3 come from 3 brands — PHILIPS, SYLVANIA and WAGNER. The "Popular" part is PHILIPS 12396NALL.
Extended Life: 2 parts, from PHILIPS and SYLVANIA. A representative part number is PHILIPS 12396NALL.
Standard Replacement: 3 parts, from PHILIPS, SYLVANIA and WAGNER. A representative part number is PHILIPS 12174NA.
Listed part numbers: PHILIPS 12396NALL, SYLVANIA 64132LL and PHILIPS 12174NA, plus the other parts above.
Vanity Mirror / Sun Visor Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: 1.8L L4 Turbocharged | 11005LL | 🇲🇽 MX | Long LifeSV8.5 Base | View on Amazon |
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 Turbocharged | DE3423LL | 🇲🇽 MX | Longer Life | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: 1.8L L4 Turbocharged | 6418WLED | 🇲🇽 MX | LED1.16 Watt | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: 1.8L L4 Turbocharged | 11005 | 🇲🇽 MX | Bulb Type: T-4 Bulb 1/2 (13mm) DiameterSV8.5 Base | 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.
4 Vanity Mirror / Sun Visor Light Bulb parts are listed for the 2018 Audi A3, from WAGNER and PHILIPS.
The Extended Life section: 1 option from WAGNER. WAGNER 11005LL is listed in this group.
The HID (intense white light) section: 1 option from PHILIPS. PHILIPS DE3423LL is listed in this group.
LED (instant-on, long life, energy-saving): 1 part, from WAGNER. A representative part number is WAGNER 6418WLED.
The Standard Replacement section: 1 option from WAGNER. WAGNER 11005 is listed in this group.
Part numbers include WAGNER 11005LL, PHILIPS DE3423LL and WAGNER 6418WLED, among others listed above.
Buying Electrical Bulb & Socket Parts for a 2018 Audi A3
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: Dome Light Bulb and Door Panel Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2018 Audi A3?
Our catalog currently lists 75 electrical bulb & socket parts for the 2018 Audi A3 across 15 subcategories and 8 brands, covering all 4 engine options (1.4L L4 ELECTRIC/GAS Turbocharged, 1.4L L4 Turbocharged, 1.8L L4 Turbocharged and 2.0L L4 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2018 Audi A3 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 2018 Audi A3?
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 2018 Audi A3 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 2018 Audi A3?
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 2018 Audi A3
Electrical Bulb & Socket Parts for Other Audi A3 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.