The US E36 [M3 and 325/328] differential uses a 188 mm ring gear

Enhance the performance and throttle response of your BMW by mounting S54 individual throttle bodies (ITBs) onto M50

000 hours of data (at 1 KHz)

6 cyl BMW M52 / M54 Pro-H 3/8

OS Giken SuperLock LSD, BMW E31 640 The US E36 [M3 andOS Giken SuperLock LSD for BMW E31 840i 840Ci 850Ci 850CSi Precision Limited Slip Differential Give your BMW E31 the performance it deserves with the OS Giken SuperLock LSD. Engineered for BMW 840i, 840Ci, 850Ci, and 850CSi models, this advanced limited slip differential enhances traction, cornering control, and overall drivabilityon both street and track. Unlike typical LSD units, OS Gikens patented pressure ring and spline through side gear design