This Athena Cut Ring Head Gasket is specifically engineered to replace BMW part # 11121730226 and 11121730227 for the M30B30

and lightweight performance

and installing factory-style metal covers on the outer CV for enhanced durability and sealing

CAT Cams camshaft kits for the M42 offer superior engineering with proven results on and off the track

Simply screw the small male fitting into the caliper and connect the brake line

5150 Xtreme Duty Cylinder Sleeve Set, BMW B46 S14 Rods This Athena Cut Ring Head5150 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,