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- Crank Hub
- CNC machined
- High Boost!
- Description
- Crank hub
- Keyed oil pump gear
- Genuine BMW crankshaft bolt
- Drill bit
- Drill guide
- VAC Crank Seal Guard
- Fits for
- Videos
- Questions about the product
- Reviews
- Blog Posts
- Accesories
A common problem with tuned S55 engines are failed crank hubs, which can result in catastrophic engine damage. With the VAC Crank hub the problem is fixed.
The VAC Motorsport 4 Pin Crank Hub is more exact than OEM due to the precise engineering and CNC machining. The 4 Pin design is mechanically securing the crank hub to the crank nose and prevents the valve timing and oil pump chains from spinning independently.
The total assembly was minimized from three to two pieces. As long as the bolt is properly tightened to the crank, the timing sprocket will always be in sync with the crank.
Kit includes:
Manufacturer
Information about the manufacturer
VAC Motorsports
VAC Motorsports
1924 Ark Road Hainesport, NJ 08036, UNITED STATES
EU responsible person
BAR-TEK Motorsport GmbH
Im Rauschen Auel 3, 51491 Overath-Brombach, Germany
Engine | Engine code |
---|---|
M2 | S55B30 | 410 hp (302 kW) |
M2 | S55B30 | 450 hp (331 kW) |
Engine | Engine code |
---|---|
M4 | S55B30 | 431 hp (317 kW) |
M4 | S55B30 | 450 hp (331 kW) |
M4 | S55B30 | 460 hp (338 kW) |
M4 | S55B30 | 500 hp (368 kW) |





Accesories