Nissan Head Stud Kit - 12pt. CA18DE/CA18DET

The ARP Nissan Head Stud Kit - 12pt. CA18DE/CA18DET is engineered for high-performance builders and tuners who demand reliability under extreme cylinder head pressure. Whether you're running a stock-boosted CA18DET turbo engine or pushing a naturally aspirated CA18DE to its limits, head studs replace factory bolts to provide superior clamping force and eliminate gasket leakage. This chromoly fastener kit is purpose-built for 4-cylinder Nissan platforms and is essential for anyone planning forced induction, higher compression ratios, or extended high-RPM operation.

ARP's chromoly construction with black oxide finish delivers superior tensile strength and fatigue resistance compared to OEM head bolts, resisting stretch and relaxation even during sustained boost cycles. The 12-point nut design provides better load distribution and easier installation alignment, critical when torquing to ARP's recommended specifications. Chromoly studs maintain their clamping load longer than conventional fasteners, preventing the gradual gasket leakage that plagues heavily modified engines. The black oxide coating protects against corrosion while allowing precision torque wrench work without slippage—essential for repeatable, reliable head gasket sealing.

This kit is ideal for CA18DE and CA18DET engine builders targeting 200+ horsepower outputs, turbo conversions, or long-term track duty. Installation requires removal of the cylinder head and careful torque sequencing per ARP's specifications—standard practice for any serious head work. The lightweight 2.9 lbs package fits easily in a toolbox, and the compact dimensions make handling during engine assembly straightforward. Upgrade from factory bolts to this ARP head stud kit to eliminate a common failure point and gain peace of mind during aggressive driving or competition use.