The 2018 Audi RS Q3 has 21 electrical bulb & socket parts with verified fitment on this page — 10 part types and 3 brands, covering the 2.5L L5 Turbocharged engine. Each part includes a manufacturer part number and application notes.
The bulb and socket system on the 2018 Audi RS Q3 covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. The largest groups are Back Up / Reverse Lamp Bulb (4 parts), Fog / Driving Lamp Bulb (4 parts) and Cornering Lamp Bulb (2 parts). The other 7 part types cover the remaining 11 parts.
Every part on this page is matched to the 2.5L L5 Turbocharged — the only engine offered in the 2018 Audi RS Q3.
The most listed brands for 2018 Audi RS Q3 electrical bulb & socket parts are HELLA (18 parts), PHILIPS (2 parts) and WAGNER (1 part). Quality grades include Extended Life and Standard Replacement.
Each part number listed for the 2018 Audi RS Q3 opens a page with every vehicle that part fits.
Back Up / Reverse Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 921LL | 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| HELLA | DE3175LL | 🇲🇽 MX | IncandescentLong Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 921 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 921NA | 🇲🇽 MX | IncandescentNatural Amber | 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.
HELLA supplies the 4 Back Up / Reverse Lamp Bulb parts for the 2018 Audi RS Q3.
The Extended Life section lists 2 options from HELLA — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. HELLA 921LL is listed in this group.
The Standard Replacement section lists 2 options from HELLA — built to original-equipment specification. HELLA 921 is listed in this group.
Listed part numbers: HELLA 921LL, HELLA DE3175LL and HELLA 921, plus the other parts above.
Cornering Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | H8 | 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-1 | View on Amazon |
| PHILIPS | H8 | 🇲🇽 MX | with HID headlamps | 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.
2 Cornering Lamp Bulb parts are listed for the 2018 Audi RS Q3, from HELLA and PHILIPS.
Part numbers include HELLA H8, among others listed above.
Door Panel Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
2 Door Panel Light Bulb parts for the 2018 Audi RS Q3 come from HELLA.
Listed part numbers: HELLA 2825 and HELLA 2825BL.
Fog / Driving Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 921LL | 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| HELLA | DE3175LL | 🇲🇽 MX | IncandescentLong Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 921 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 921NA | 🇲🇽 MX | IncandescentNatural Amber | 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.
4 Fog / Driving Lamp Bulb parts for the 2018 Audi RS Q3 come from HELLA.
Extended Life: 2 parts, from HELLA. A representative part number is HELLA 921LL.
Standard Replacement: 2 parts, from HELLA. A representative part number is HELLA 921.
Listed part numbers: HELLA 921LL, HELLA DE3175LL and HELLA 921, plus the other parts above.
Glove Box Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
2 Glove Box Light Bulb parts for the 2018 Audi RS Q3 come from HELLA.
This group includes HELLA 2825 and HELLA 2825BL.
Headlamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | D5S | 🇲🇽 MX | High Beam and Low BeamHid Type | 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.
This group shows a single part: WAGNER D5S.
Map / Reading Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
HELLA supplies both parts for the 2018 Audi RS Q3.
This group includes HELLA 2825 and HELLA 2825BL.
Tail Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 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.
This group shows a single part: HELLA 2825.
Trunk / Cargo Area Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
2 Trunk / Cargo Area Light Bulb parts for the 2018 Audi RS Q3 come from HELLA.
Listed part numbers: HELLA 2825 and HELLA 2825BL.
Turn Signal Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS | 12174NA | 🇲🇽 MX | 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.
One part is listed for the 2018 Audi RS Q3 — PHILIPS 12174NA.
Buying Electrical Bulb & Socket Parts for a 2018 Audi RS Q3
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Confirm you have the 2.5L L5 Turbocharged engine — every part on this page is matched to it.
- 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: Back Up / Reverse Lamp Bulb and Fog / Driving Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2018 Audi RS Q3?
Our catalog currently lists 21 electrical bulb & socket parts for the 2018 Audi RS Q3 across 10 subcategories and 3 brands, covering the 2.5L L5 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical bulb & socket problems on a 2018 Audi RS Q3?
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 RS Q3 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 RS Q3?
Every part on this page is matched to the 2.5L L5 Turbocharged engine. 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 RS Q3
Electrical Bulb & Socket Parts for Other Audi RS Q3 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.