RacingDiffs differential bearing set - Differential type 188K - Repair kit for BMW (E46, E39, E53)

BMW used the next generation Type K differentials after Millimeter differentials, hence the Type K were used in models produced from 1999 to 2006. Unlike mm differentials which had shims for backlash adjustment, Type K differentials use C-clips. However, they still used roller bearings.

K type differential type was found in following BMW models:
- 3 series: E46
- 5 series: E39
- 7 series: E38 (late models), E65, E66, E67
- X3 series: E83
- X5 series: E53
- Z series: E85, E86

You can choose 2 different options according to your differential size. Simplified, 6 cylinder are 188K while 8 cylinder models have 215/220K differential size.

How to tell if your differential needs bearings replacement?
Characteristic noise from differential/transmission occurs during acceleration and coast (engine breaking). To distinguish differential bearing noise from the wheel bearing noise steer left-right like you are warming up tires for the race. If the noise changes its intensity than it is a wheel bearing. If intensity of the noise remains the same, that means differential bearings needs to be replaced.

Repair kit includes:
-1x Crush sleeve shim
-1x Small pinion bearing
-1x Large pinion bearing
-1x Input flange oil seal
-2x Output flange oil seal

RacingDiffs Components are OEM quality.