Complete hydraulic accessory belt tensioner for BMW 3 Series E36 gasoline

Automatic hydraulic cylinder expander in aluminum from alternator and water pump beltfor BMW 3 series E36 gasoline :

E36 Sedan, Touring, Compact, Coupe and Convertible:
- 320i (engine codes M50B20, M50B20TU and M52B20)
- 323i (engine code M52B25)
- 325i (engine codes M50B25 and M50B25TU)
- 328i (engine code M52B28)
- M3 3.0l and 3.2l (engine codes S50B30 and S50B32)

Delivered complete with plastic tensioner roller and mounting accessories.

Dimensions of the roller:
- Diameter: 70 mm
- Width: 26 mm

Please note: there are 2 possible mountings, one with a mechanical spring tensioner (part number BD30310) and one with this hydraulic jack tensioner. Please check your assembly before ordering!