Fan visco-coupling unit for Audi A4 (B5) and A6 (C4, C5)

For A4 (B5):
- 2.4 150 hp (AFM)
- 2.4 163 hp and 165 hp (AJG, APZ, AGA, ALF, APZ, AML, AMM, APS)
- 2.6 139 hp and 150 hp (ACZ, ABC)
- 2.8 174 hp (AAH)
- 2.8 193 hp (ACK, ALG, AMX, APR, AQD)

For A6 (C4):
- 2.8 193 hp (ACK)

For A6 (C5):
- 2.4 136 hp and 156 hp (ASM, ALW, APC)
- 2.4 163 hp and 165 hp (AGA, AJG, APZ, ALF, AMM, AML, APS, ARJ)
- 2.4 170 hp (BDV)
- 2.7 230 hp and 250 hp Turbo (AJK, ARE, BES)
- 2.8 180 hp (AGE)
- 2.8 193 hp (ACK, ALG, AMX, APR, AQD) Not suitable for Allroad versions