The Eagle rotating assembly for Jeep 4.2L (258) suits pump-gas, naturally aspirated street applications. This complete kit includes a 3.895" cast steel crank, 6.123" 5140 I-beam rods, ARP 8740 bolts, forged 4032 ICON 3.915" inverted-dome pistons with a 10.8cc dish, plasma-moly file-fit rings and King SI rod and main bearings.
Eagle Jeep 4.2L 258 3.895in Cast Crank 6.123in I-Beam Rods -10.8cc 3.915in Pistons Rotating Assembly