Coolant Block Off Front [use factory bolt and O-Ring]

Dual Springs expand pressure range while maintaining a low profile and reduced weight

Athena Cut-Ring Head Gasket

Internal cooling fins increase the surface area in contact with the fluid to improve heat transfer and efficiency

CP-Carrillo connecting rods are the go-to upgrade for serious BMW engine builders

BMW M50 M52 S50 S52 Bully Engine Build by 5150 AutoSport E61 LCI Coolant Block Off Front [useEvery 5150 Bully Engine undergoes a comprehensive disassembly and meticulous inspection by our team of expert technicians. From there, our skilled craftsmen rebuild the engine with precision and care, utilizing top of the line components. No detail is spared; every gasket, seal, and component between the oil pan and valve cover is cleaned, replaced, or upgraded to ensure upmost performance and reliability. The result is a powerhouse engineered for the