The 2021 Audi S4 has 11 electrical connector parts with verified fitment on this page — 7 part types and 3 brands, covering both the 3.0L V6 Supercharged and the 3.0L V6 Turbocharged. Each part includes a manufacturer part number and application notes.
On the 2021 Audi S4, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. Most of the listed parts are Repair Harness (4 parts), Parking Aid Sensor Connector (2 parts) and ABS Wheel Speed Sensor Connector (1 part). The other 4 part types cover the remaining 4 parts.
The 2021 Audi S4 was sold with both the 3.0L V6 Supercharged and the 3.0L V6 Turbocharged. All 11 parts on this page fit every engine.
The most listed brands for 2021 Audi S4 electrical connector parts are STANDARD MOTOR PRODUCTS (6 parts), VEMO (4 parts) and HOLSTEIN (1 part).
Each part number listed for the 2021 Audi S4 opens a page with every vehicle that part fits.
ABS Wheel Speed Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 S4 engines | ALH289 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
This table covers the harness connectors at each ABS wheel-speed sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Audi S4 — STANDARD MOTOR PRODUCTS ALH289.
Brake Pad Wear Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 S4 engines | S2906 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
This table covers the harness connectors at the Brake Pad Wear Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2906.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 S4 engines | S2869 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the harness connectors at the Ignition Coil. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Audi S4 — STANDARD MOTOR PRODUCTS S2869.
Oil Pressure Sender / Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 S4 engines | S2893 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Black | View on Amazon |
This table covers the harness connectors at the Oil Pressure Sender / Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2893.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 S4 engines | 2HAR0060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 S4 engines | S2316 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalNumber of Splice Connectors Included: 3 | View on Amazon |
This table covers the harness connectors at the Parking Aid Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Parking Aid Sensor Connector parts are listed for the 2021 Audi S4, from HOLSTEIN and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 S4.
This group includes HOLSTEIN 2HAR0060 and STANDARD MOTOR PRODUCTS S2316.
Repair Harness
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VEMO Fits: all 2021 S4 engines | V10830080 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes: Expert Kits | View on Amazon |
| VEMO Fits: all 2021 S4 engines | V24830035 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes: Expert Kits | View on Amazon |
| VEMO Fits: all 2021 S4 engines | V10830094 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VEMO Fits: all 2021 S4 engines | V10560006 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Repair harnesses.
VEMO supplies the 4 Repair Harness parts for the 2021 Audi S4. All of them fit every engine offered in the 2021 S4.
Listed part numbers: VEMO V10830080, VEMO V24830035 and VEMO V10830094, plus the other parts above.
Starter Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 S4 engines | S3235 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the harness connectors at the Starter Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Audi S4 — STANDARD MOTOR PRODUCTS S3235.
Buying Electrical Connector Parts for a 2021 Audi S4
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- You do not need to pick an engine: every electrical connector part on this page fits both the 3.0L V6 Supercharged and the 3.0L V6 Turbocharged.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Repair Harness and Parking Aid Sensor Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Audi S4?
Our catalog currently lists 11 electrical connector parts for the 2021 Audi S4 across 7 subcategories and 3 brands, covering both the 3.0L V6 Supercharged and the 3.0L V6 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Audi S4 engines?
No. On this page every electrical connector part fits both the 3.0L V6 Supercharged and the 3.0L V6 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 connector problems on a 2021 Audi S4?
Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. 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, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
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 S4 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 S4?
Every part on this page already fits both the 3.0L V6 Supercharged and the 3.0L V6 Turbocharged. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Audi S4
Electrical Connector Parts for Other Audi S4 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.