Set of (6) Grade 8 yellow zinc plated hex bolts to attach the flywheel to the crankshaft on all AMC 258 4.2L and 4.0L engines with manual transmission. Fits 4.2L: 72-83 CJ5, 76-86 CJ7, 81-86 CJ8 Scrambler, 87-90 Wrangler YJ, 72-73 and 80-83 Wagoneer, 74-87 J10, 74 and 76 J20, 84-86 Grand Wagoneer, 72-73 Commando, 74-83 Cherokee. Fits 4.0L: 91-95 Wrangler YJ, 97-06 Wrangler TJ, 87-01 Cherokee XJ, 87-92 Comanche MJ, 93-94 Grand Cherokee ZJ, 87-90 Wagoneer. High quality direct OEM replacement. Replaces Mopar J3170524. Note: These are flywheel bolts for manual transmission. They are not flexplate bolts for automatic transmission.