Crankshaft Main Bearing Kit; 0.030-Inch Over (87-90 4.2L Jeep Wrangler YJ)Find parts that fit my vehicle

Over time all internal engine wear surfaces become worn. This is true for crankshaft journals, connecting rods, camshaft lobes, piston rings, bearings, etc. When rebuilding a worn out engine you'll need to replace them all in order to regain the engine's original performance. And, let's face it, Jeep's need all the power we can get. We offer new high quality replacement engine parts to get your Jeep back on the road. This replacement main bearing set fits 72-83 CJ5, 72-75 CJ6, 76-86 CJ7, 81-86 CJ8 Scrambler, 72-73 Commando, 72-73 Trucks, 72-83 Cherokee / Wagoneer, 73-74 DJ5, 84-86 Grand Wagoneer, 87-90 Comanche MJ and 87-90 Wrangler YJ models equipped with 3.8, 4.0 and 4.2 liter engines with 0.030-inch under size crank. Replaces OE 4289M.030. Main Bearing Set (3.8L, 4.0L and 4.2L), .030 inch Over, 1972-1990 Models

Fitment:

• 1987 Jeep Wrangler
• 1988 Jeep Wrangler
• 1989 Jeep Wrangler
• 1990 Jeep Wrangler

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