Rear axle Dana 44 tapered roller bearing shims, these shims are designed and made to fit behind the TIMKEN SET 10 bearing. They are used to adjust and eliminate bearing end play.
The shims allow for adjustment of end play to 0.000″, which tapered roller bearings work best at.
I’ve seen a 10% improvement in gas mileage of a vehicle, and double the coasting distance, with zeroed bearing endplay.
Shim set is 4-.003”, 4-.005″, 4-.010″, 2-.030″ shims, enough for both axle bearings.