Mishimoto's catch cans are different from most air-oil-separator (AOS) systems on a few levels

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

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

Crafted with precision engineering

G30 M550i xDrive

OS Giken SuperLock LSD, BMW E31 640 Mishimoto's catch cans are differentOS 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