BMW 645Ci V8 (4

- Precision laser-etched 360° timing marks for precise adjustments

For advanced setups using an aftermarket throttle body

Installation is clean and simple and requires only basic hand tools

this Harmonic Damper is engineered to withstand the demands of high-revving M50 / M52 / S50 / S52 engines

BMW S68 Cylinder Sleeves 5464 BMW 645Ci V8 (45150 Xtreme Duty Cylinder Sleeves, also known as cylinder liners, are centrifugally cast, ductile iron cylinder sleeves. Benefits of Engine Sleeving Include: Increased Bore Size: Sleeving your engine gives the opportunity to increase bore size for higher displacement and increased engine capacity, resulting in more power and more torque Increased Strength: Iron sleeves are stronger than alusil when subjected to high power, high stress applications,