Head Bolt Kit 6pt. Jeep 232/258 6cyl w/4.0L Head

The Head Bolt Kit 6pt. Jeep 232/258 6cyl w/4.0L Head from ARP is an essential fastener solution for serious Jeep builders who prioritize maximum clamping force and reliability. This kit is ideal for those refreshing an inline-six engine, rebuilding after machine work, or upgrading from factory hardware. It provides the strength necessary to handle elevated compression, boost, or prolonged high-RPM use.

Manufactured from proprietary alloy steel, ARP head bolts feature a 6-point socket geometry that ensures superior hex engagement and prevents stripping, which is critical when torquing to specification in tight engine compartments. The 6-point design also distributes load more evenly than 12-point alternatives, reducing the risk of cam-out during installation and protecting both the bolt and cylinder head. This kit is engineered to meet OEM specifications while exceeding their tensile strength.

Engine builders working on Jeep inline-six engines—from stock restorations to turbocharged CJ and TJ platforms—rely on this kit for peace of mind. ARP includes a detailed instruction sheet with proper torque sequences and specifications, ensuring correct preload and preventing gasket leaks or head warping. This makes it a trusted choice for anyone looking to enhance their engine's performance and reliability.