Head Bolt Kit - 12pt Toyota 1.3L/1.5Y 4-Cyl.

The Head Bolt Kit - 12pt Toyota 1.3L/1.5Y 4-Cyl. by ARP is designed for automotive enthusiasts and mechanics who require dependable performance under high-rpm and high-boost conditions. This kit is specifically tailored for Toyota's 1.3-liter and 1.5-liter four-cylinder engines, which are popular choices for tuning and forced induction modifications.

ARP's head bolt kits replace factory fasteners with high-strength alloy steel components, engineered to maintain consistent clamp load and prevent issues like bolt stretch or head gasket failure during demanding driving scenarios. The 12-point fasteners offer enhanced engagement compared to traditional six-point designs, minimizing the risk of rounding during installation or removal. Each bolt is heat-treated to precise specifications, providing significantly higher tensile strength than OEM bolts.

This head bolt kit is ideal for any owner of a Toyota 1.3L or 1.5Y engine looking to perform a rebuild, head gasket replacement, or upgrade for increased boost or compression. Proper installation requires adherence to ARP's torque-angle procedure, ensuring optimal clamping force on aluminum cylinder heads. Each bolt comes individually packaged with ARP's proprietary lubricant for consistent torque values across all fastening points.