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The Eagle rotating assembly for Jeep 4.2L (258) is designed for pump-gas, naturally aspirated street use. It includes a 3.895" cast steel crank, 6.123" 5140 I-beam rods with ARP 8740 bolts, forged 4032 DSS 3.905" inverted-dome pistons, plasma-moly file-fit rings and King SI rod and main bearings, delivered as a complete rotating group.
Eagle Jeep 4.2L 258 3.895in Cast Crank 6.123in I-Beam Rods -21cc 3.905in Pistons Rotating Assembly
