This page lists 38 electrical parts for the 2025 Audi A4 Allroad, across 4 part types, covering the 2.0L L4 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2025 Audi A4 Allroad, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 37 parts of the 38 listed are Battery (31 parts), Parking Aid Sensor (3 parts) and Starter Motor (3 parts). The other 1 part type covers the remaining 1 part.
The 2025 Audi A4 Allroad came with a single engine, the 2.0L L4 Turbocharged, and every part is verified against it.
13 brands supply electrical parts for the 2025 Audi A4 Allroad, led by ACDELCO (9 parts), DEKA (5 parts) and EXIDE (5 parts), plus 10 more brands. Quality grades include AGM, Performance AGM and Remanufactured.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2025 Audi A4 Allroad. 6 parts have it, including ACDELCO 47AGM (Battery) and ACDELCO 94RAGMHR (Battery). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL | 39015N | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
This group shows a single part: WAI GLOBAL 39015N.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 47AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 47 | View on Amazon |
| ACDELCO Popular | 94RAGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| DEKA Popular | 9A47 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| DEKA Popular | 9A48 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| DEKA Popular | 9A94R | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| FVP Popular | P94RAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 94R | View on Amazon |
| ACDELCO | 48AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 48 | View on Amazon |
| ACDELCO | 47SAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 47 | View on Amazon |
| ACDELCO | 48AGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| ACDELCO | 94RAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 94R | View on Amazon |
| ACDELCO | 49AGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 49 | View on Amazon |
| ACDELCO | 49AGMHR | 🇺🇸 US 🇨🇦 CA | High ReserveAGM | View on Amazon |
| ACDELCO | 95RAGM | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 95R | View on Amazon |
| BOSCH | S6587B | 🇺🇸 US 🇨🇦 CA | AGMAGM | View on Amazon |
| BOSCH | S6588B | 🇺🇸 US 🇨🇦 CA | AGMAGM | View on Amazon |
| DEKA | 9A49 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| DEKA | 9A95R | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE | MXH5L247 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 47 (H5) | View on Amazon |
| EXIDE | MXH6L348 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 48 (H6) | View on Amazon |
| EXIDE | MXH7L494R | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 94R (H7) | View on Amazon |
| EXIDE | MXH8L549 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 49 (H8) | View on Amazon |
| EXIDE | MXH9L695R | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 95R (H9) | View on Amazon |
| FVP | P47AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 47 | View on Amazon |
| FVP | P49AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 49 | View on Amazon |
| FVP | P48AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 48 | View on Amazon |
| MOTORCRAFT | BAGM49H8 | 🇺🇸 US 🇨🇦 CA | Tested Tough AGMBCI Group: 49/H8 or BCI Group 49 | View on Amazon |
| MOTORCRAFT | BAGM95RH9 | 🇺🇸 US 🇨🇦 CA | Tested Tough AGMBCI Group 95R or BCI Group: 95R/H9 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER | FT61047 | 🇺🇸 US | BCI Group 47(Length X Width X Height) 9.49 In x 6.89 In x 7.48 In | View on Amazon |
| FULLRIVER | FT68048 | 🇺🇸 US | BCI Group 48(Length X Width X Height) 10.94 In x 6.89 In x 7.48 In | View on Amazon |
| FULLRIVER | FT85094R | 🇺🇸 US | BCI Group 94R(Length X Width X Height) 12.36 In x 6.85 In x 7.48 In | View on Amazon |
| FULLRIVER | FT89049 | 🇺🇸 US | BCI Group 49(Length X Width X Height) 13.9 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.
31 Battery parts are listed for the 2025 Audi A4 Allroad, from ACDELCO, DEKA, EXIDE and 4 other brands. ACDELCO 47AGM carries the "Popular" badge. They are grouped as AGM (Extended Life) and Performance AGM (Extended Life + Increased Power), with AGM (Extended Life) the largest group at 27 parts from ACDELCO, DEKA, EXIDE and 3 other brands.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 358141711 | 🇺🇸 US | 3-Pin ConnectorPlugged | View on Amazon |
| MARELLI | SDP107 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS | PPS112 | 🇺🇸 US 🇨🇦 CA | Black | 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.
3 Parking Aid Sensor parts for the 2025 Audi A4 Allroad come from 3 brands — HELLA, MARELLI and STANDARD MOTOR PRODUCTS.
This group includes HELLA 358141711, MARELLI SDP107 and STANDARD MOTOR PRODUCTS PPS112.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL | 31089N | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REMY | 16409 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER | 52184 | 🇺🇸 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.
3 Starter Motor parts for the 2025 Audi A4 Allroad come from 3 brands — WAI GLOBAL, REMY and TERREPOWER.
The New section lists 1 option from WAI GLOBAL — brand-new units rather than rebuilt ones. WAI GLOBAL 31089N is listed in this group.
The Remanufactured section lists 2 options from REMY and TERREPOWER — factory-rebuilt units with new wear components. REMY 16409 is listed in this group.
Part numbers include WAI GLOBAL 31089N, REMY 16409 and TERREPOWER 52184.
Buying Electrical Parts for a 2025 Audi A4 Allroad
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 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, 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 2025 Audi A4 Allroad?
Our catalog currently lists 38 electrical parts for the 2025 Audi A4 Allroad across 4 subcategories and 13 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2025 Audi A4 Allroad?
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 2025 Audi A4 Allroad 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 2025 Audi A4 Allroad?
Every part on this page is matched to the 2.0L L4 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 2025 Audi A4 Allroad
Electrical Parts for Other Audi A4 Allroad 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.