This page lists 22 electrical bulb & socket parts for the 2021 Acura RDX, across 7 part types, covering the 2.0L L4 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Acura RDX, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 16 parts of the 22 listed are Door Panel Light Bulb (10 parts), Turn Signal Lamp Bulb (4 parts) and Back Up / Reverse Lamp Bulb (2 parts). The other 4 part types cover the remaining 6 parts.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2021 Acura RDX.
The most listed brands for 2021 Acura RDX electrical bulb & socket parts are HELLA (10 parts), SYLVANIA (9 parts) and WAGNER (3 parts). Quality grades include LED, Standard Replacement and Extended Life.
2 parts on this 2021 Acura RDX page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SYLVANIA 194 (Door Panel Light Bulb) and WAGNER 194 (Door Panel 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 | 7506LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 7506 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: BA15S | 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 both parts for the 2021 Acura RDX.
The Extended Life section lists 1 option from HELLA — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. HELLA 7506LL is listed in this group.
The Standard Replacement section lists 1 option from HELLA — built to original-equipment specification. HELLA 7506 is listed in this group.
Part numbers include HELLA 7506LL and HELLA 7506.
Door Panel Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 194LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.2d | View on Amazon |
| WAGNER | 194LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBulb Type: T-3-1/4 Bulb 13/32 (10mm) Diameter | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 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 | 194BSL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDBlue | View on Amazon |
| SYLVANIA | 194SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| SYLVANIA | 194BLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueZEVO | View on Amazon |
| SYLVANIA | 194LED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVOCool White | View on Amazon |
| WAGNER | 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 |
|---|---|---|---|---|
| SYLVANIA Popular | 194 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.2dWattage: 3.80 W | View on Amazon |
| WAGNER Popular | 194 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Wedge Base3.780 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.
10 Door Panel Light Bulb parts for the 2021 Acura RDX come from 2 brands — SYLVANIA and WAGNER. The "Popular" part is SYLVANIA 194.
Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 194LL.
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 194ST.
The LED (instant-on, long life, energy-saving) section lists 5 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 194BSL is listed in this group.
Standard Replacement: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 194.
Fog / Driving Lamp Bulb
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 226971571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Socket Type Bulb: PX22D | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | H11 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-2 or Socket Type Bulb: PGJY19-2 | 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.
2 Fog / Driving Lamp Bulb parts for the 2021 Acura RDX come from HELLA.
The LED (instant-on, long life, energy-saving) section: 1 option from HELLA. HELLA 226971571 is listed in this group.
Standard Replacement: 1 part, from HELLA. A representative part number is HELLA H11.
This group includes HELLA 226971571 and HELLA H11.
Headlamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 9012LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HalogenSocket Type Bulb: PX22D | 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: HELLA 9012LL.
License Plate Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
One part is listed for the 2021 Acura RDX — HELLA 2825.
Tail Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 7506 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: BA15S | 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 for the 2021 Acura RDX come from HELLA.
This group includes HELLA 2825 and HELLA 7506.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 7440NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| SYLVANIA | 7507LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | AmberLong Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 7440NA | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentNatural Amber | View on Amazon |
| SYLVANIA | 7507 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | 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.
4 Turn Signal Lamp Bulb parts are listed for the 2021 Acura RDX, from HELLA and SYLVANIA.
The Extended Life section: 2 options from HELLA and SYLVANIA. HELLA 7440NALL is listed in this group.
The Standard Replacement section: 2 options from HELLA and SYLVANIA. HELLA 7440NA is listed in this group.
Part numbers include HELLA 7440NALL, SYLVANIA 7507LL and HELLA 7440NA, among others listed above.
Buying Electrical Bulb & Socket Parts for a 2021 Acura RDX
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 2.0L L4 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: Door Panel Light Bulb and Turn Signal Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2021 Acura RDX?
Our catalog currently lists 22 electrical bulb & socket parts for the 2021 Acura RDX across 7 subcategories and 3 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical bulb & socket problems on a 2021 Acura RDX?
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 Acura RDX 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 Acura RDX?
Every part on this page is matched to the 2.0L L4 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 2021 Acura RDX
Electrical Bulb & Socket Parts for Other Acura RDX Years
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