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The Eagle rotating assembly for Jeep 4.2L (258) fits pump-gas, naturally aspirated street applications. It pairs a 3.895" cast steel crank with 6.123" 5140 I-beam rods, ARP 8740 bolts and forged 4032 ICON 3.915" inverted-dome pistons, plus plasma-moly file-fit rings and King SI rod and main bearings for a complete rotating assembly.
Eagle Jeep 4.2L 258 3.895in Cast Crank 6.123in I-Beam Rods -27cc 3.915in Pistons Rotating Assembly
