The 2021 Audi RS6 has 15 electrical parts with verified fitment on this page — 4 part types and 10 brands, covering the 4.0L V8 Turbocharged engine. Each part includes a manufacturer part number and application notes.
The electrical system on the 2021 Audi RS6 covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Battery (6 parts), Parking Aid Sensor (4 parts) and Starter Motor (4 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 4.0L V8 Turbocharged — the only engine offered in the 2021 Audi RS6.
The most listed brands for 2021 Audi RS6 electrical parts are VALEO (4 parts), DEKA (2 parts) and FVP (2 parts), plus 7 more brands. Quality grades include AGM, New and Performance AGM.
2 parts on this 2021 Audi RS6 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including DEKA 9A48 (Battery) and LUCAS LBAGM004A (Battery). Click any part number to see every vehicle that part fits.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular | 9A48 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| LUCAS Popular | LBAGM004A | 🇺🇸 US 🇨🇦 CA | BCI Group: 48AGM | View on Amazon |
| DEKA | 9A47 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE | MXH6L348 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| FVP | P48AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 48 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER | FT68048 | 🇺🇸 US 🇨🇦 CA | BCI Group 48(Length X Width X Height) 10.94 In x 6.89 In x 7.48 In | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
6 Battery parts for the 2021 Audi RS6 come from 5 brands — DEKA, LUCAS, EXIDE and 2 other brands. The "Popular" part is DEKA 9A48.
In the AGM (Extended Life) grade, DEKA, LUCAS, EXIDE and 1 other brand supply 5 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A48.
In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT68048.
This group includes DEKA 9A48, LUCAS LBAGM004A and DEKA 9A47 and the remaining parts above.
Lighting Control Module (LCM)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO | V10730667 | 🇺🇸 US 🇨🇦 CA | To 01/23/2023 | View on Amazon |
This table covers the modules that control the exterior lighting.
One part is listed for the 2021 Audi RS6 — VEMO V10730667.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MARELLI | SDP107 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| VALEO | 890031 | 🇺🇸 US 🇨🇦 CA | Ultrasonic Sensors | View on Amazon |
| VALEO | 890034 | 🇺🇸 US 🇨🇦 CA | Ultrasonic Sensors | View on Amazon |
| VALEO | 890036 | 🇺🇸 US 🇨🇦 CA | Ultrasonic Sensors | View on Amazon |
This table covers the ultrasonic park-aid sensors in the bumper. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
4 Parking Aid Sensor parts are listed for the 2021 Audi RS6, from VALEO and MARELLI.
This group includes MARELLI SDP107, VALEO 890031 and VALEO 890034 and the remaining parts above.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO | 438517 | 🇺🇸 US 🇨🇦 CA | Valeo Origins New OE Technology | View on Amazon |
| WAI GLOBAL | 31471N | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY | 12950 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | 12950 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
4 Starter Motor parts are listed for the 2021 Audi RS6, from VALEO, WAI GLOBAL, PURE ENERGY and 1 other brand.
In the New grade, VALEO and WAI GLOBAL supply 2 parts: brand-new units rather than rebuilt ones. A representative part number is VALEO 438517.
In the Remanufactured grade, PURE ENERGY supplies 1 part: factory-rebuilt units with new wear components. A representative part number is PURE ENERGY 12950.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: VALEO 438517, WAI GLOBAL 31471N and PURE ENERGY 12950, plus the other parts above.
Buying Electrical Parts for a 2021 Audi RS6
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Confirm you have the 4.0L V8 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Battery and Parking Aid Sensor .
Frequently Asked Questions
How many electrical parts fit the 2021 Audi RS6?
Our catalog currently lists 15 electrical parts for the 2021 Audi RS6 across 4 subcategories and 10 brands, covering the 4.0L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2021 Audi RS6?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 Audi RS6 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 Audi RS6?
Every part on this page is matched to the 4.0L V8 Turbocharged engine. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Audi RS6
Electrical Parts for Other Audi RS6 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.