Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
Omix main bearing set, .030-inch undersize, provides a complete set of main bearings for crankshafts machined to 0.030-inch undersize during rebuilds. This OE-style replacement fits 1972–1990 Jeep CJ, Wrangler and related models with 3.8L, 4.0L and 4.2L engines and replaces OE 4289M.030. It supports proper crankshaft fitment during reassembly; professional engine work may be required and a limited five-year warranty is included.
Omix Main Bearing Set .030 72-90 Jeep CJ & Wrangler
