Eagle Jeep 4.2L 258 3.895in Cast Crank 6.123in I-Beam Rods -10.8cc 3.905in Pistons Rotating Assembly

This Eagle Street & Strip Rotating Assembly gives you a complete package for rebuilding or upgrading your Jeep's 4.2L 258 engine. Inside this assembly, you'll find a 3.895-inch cast steel crankshaft, ready to handle the demands of a street-driven vehicle. It's paired with 6.123-inch I-beam connecting rods made from strong 5140 steel, which come equipped with 3/8-inch ARP 8740 bolts for a secure connection. The assembly also includes 3.905-inch forged 4032 aluminum pistons from ICON, featuring an inverted dome design with a -10.8cc volume, along with plasma-moly file-fit piston rings. To ensure proper bearing function, King SI rod and main bearings are included, providing a well-built foundation for your engine's rotating assembly.

This rotating assembly is specifically designed for pump gas, naturally aspirated applications, making it a solid choice for street vehicles that might also see occasional track use. The combination of cast steel for the crankshaft and 5140 steel for the connecting rods offers a good balance of strength and weight for this type of build. The forged ICON pistons are a notable upgrade, known for their durability and performance characteristics. The inclusion of ARP bolts signifies a commitment to reliable assembly, and the King bearings are a well-regarded component for engine internals. This kit aims to simplify the process of sourcing individual high-performance components for your engine build.

Please note that this assembly is not CARB approved and cannot be shipped to California. It's important to check all manufacturer installation instructions and specifications before beginning your engine build to ensure proper fitment and function.