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Number 11 marks the part’s position in the exploded view (Audi A5 Limousine (2024-2025)).
Product overview
Genuine OEM Audi Control Unit for Brake Servo, part number 8B3998259J. Fits Audi A5 Avant (2024-2025), Audi A5 Limousine (2024-2025). Shown as position 11 in the wheels and brakes diagram 8WK61202.
Catalogue entry: CTRL UNIT; additionally to be used items: 9.
Technical details
- Category
- Brakes
- Diagram sheet
- Audi 8wk612020, position 11
- ETKA group
- 6 / 12 (612)
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
Equipment codes
- 5IQ
PR codes identify the factory option a part belongs to; your vehicle’s are listed on the data sticker in the boot well or service booklet.
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Parts diagram & fitment
2 vehiclesControl Unit For Brake Servo — locate 8B3998259J Audi Control Unit for Brake Servo in the official exploded view and explore the surrounding assembly.
Parts in this assembly23
- 1Brake ServLeft8B1698100G
- 1Brake ServLeft8B1698100J
- 1Brake ServRight8B2698100C
- 1Brake ServRight8B2698100E
- 2TankLeft8B1698301
- 2TankRight8B2698301
- 5Part 5Q0611349B
- 6Sender 8B3611377
- 8Bolt N10665001
- 8Screw N10673001
- 8Screw N10700101
- 9SealLeft8B1698161
- 9SealRight8B2698161
- 11Part 8B3998259G
- 12CoverLeft8B1611367
- 12CoverRight8B2611367A
- 13Bolt N10741402
- 14Adapter 8B1614306
- 15Brakefluid B000750M1
- 15Brakefluid B000750M3
- 15Brakefluid B000750M6
- 15Brakefluid B000750M7
- 15Brakefluid B000750M9
Vehicle fitment table2
Europe (2)
| Vehicle | Years | Pos. |
|---|---|---|
| Audi A5 Limo 2.0 | 2024- | 11 |
| Audi A5 Avant 2.0 | 2024- | 11 |
The manufacturer’s catalogue lists this part number as fitted until 24 November 2025; later builds may use a superseding number.
Diagrams & fitment data powered by oemdiagrams.com
8B3998259J Audi Control Unit for Brake Servo is fitted on: Audi A5 Limo 2.0 2024-; Audi A5 Avant 2.0 2024-.