Audi A4 B9 Brake Pad Overview
The Audi A4 B9 (8W, 2015–2023) uses a perforated disc and specific-compound pad combination across its model range. Brake pad specification varies by engine variant and equipment level — the S Line and S4 variants use larger callipers with different pad sizes than standard specification cars. Using the correct OEM specification is essential to avoid the brake judder and uneven disc wear that commonly results from mismatched pad compounds on Audi's aluminium-intensive chassis.
Front Brake Pad Part Numbers — A4 B9
- 2.0 TFSI / 2.0 TDI (standard spec, 314mm disc): 8W0698151J
- 2.0 TFSI S Line (320mm disc): 8W0698151J
- 3.0 TDI / S4 (front, 340mm disc): 8W0698151K
Rear Brake Pad Part Numbers — A4 B9
- Standard rear (272mm disc): 8W0698451J
- S4 rear (330mm disc): 8W0698451L
Brake Wear Sensors
The A4 B9 uses electronic wear sensors on both front and rear axles. These are single-use — always replace sensors when replacing pads. Reusing old sensors will trigger an immediate warning light with the new pads. The wear sensor part numbers:
- Front sensor: 4H0698999
- Rear sensor: 4H0698998
OEM Brake Pad Suppliers for Audi A4 B9
Textar and Pagid (both TMD Friction brands) are the primary OEM suppliers for Audi brake pads. TRW and ATE (Continental) are also used on certain variants. Buying pads from these brands with the correct VAG part number gives you OEM-equivalent quality.
Replacement Tips
The A4 B9 rear brakes use electronic parking brake actuators (EPB). Compressing the rear callipers requires a special EPB reset tool — the pistons rotate rather than press straight in. Do not attempt to push rear pistons in with a G-clamp — you will damage the callipers. Either use the correct EPB tool or have a workshop handle the rear pad replacement.
Find OEM Audi A4 B9 brake pads and sensors in our catalog.