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The Eagle rotating assembly for Jeep 4.2L (258) is intended for pump-gas, naturally aspirated street use. The assembly pairs a 3.895" cast steel crank with 6.123" 5140 I-beam rods, ARP 8740 bolts and forged 4032 ICON 3.935" inverted-dome pistons, plus plasma-moly file-fit rings and King SI rod and main bearings for a full rotating package.
Eagle Jeep 4.2L 258 3.895in Cast Crank 6.123in I-Beam Rods -21cc 3.935in Pistons Rotating Assembly
