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 youll need to replace them all in order to regain the engines original performance. And, lets face it, Jeeps need all the power we can get. Omix offers new high quality replacement engine parts to get your Jeep back on the road. This replacement standard intake valve fits 81 - 83 CJ5, 81 - 86 CJ7 CJ8 Scrambler, 81 - 87 J - Series Pickups, 81 - 83 Cherokee Wagoneer SJ, 84 - 86 Grand Wagoneer SJ and 87 - 90 Wrangler YJ models with 4.2 liter engines. Sold individually - use 6 per vehicle. Replaces OE 3237465