Engine block to bellhousing dowel pin for all 4.0L, 4.2L and 5.9L engines used in: CJ5, CJ7, CJ8 Scrambler, Wrangler YJ, Wrangler TJ, Cherokee XJ, Grand Cherokee ZJ, Grand Cherokee WJ, Comanche MJ, Wagoneer/ Grand Wagoneer SJ, J10 and J20. The dowel pin is CNC machined from 4140 alloy steel and is zinc plated for corrosion resistance. It is far better quality than the OEM dowel pins. Replaces J4005148. Also fits the oil pump on 3.8L, 4.0L and 4.2L AMC engines.