ARP Cylinder Head Nuts

ARP cylinder head nuts are high-strength fasteners for clamping the cylinder head to the engine block. They are also called head nuts or cylinder head stud nuts. They are made for engines that run high cylinder pressure, boost, nitrous, or heavy racing loads, where stock nuts can stretch, loosen, or fail.

Key Features:

• Precision manufacturing: ARP makes its fasteners in the USA, and they are built to tight quality standards.
• High-strength materials: ARP offers its nuts in premium alloys chosen for strength and durability.
• Accurate threads: Rolled, tightly controlled threads help give consistent torque readings and even clamping load.
• Quality control: ARP inspects and tests its fasteners to hold up to repeated heat cycles and high stress.
• Racing heritage: ARP is a well-known name in motorsports and performance engine building.

These nuts help keep head gasket sealing pressure steady, which reduces the risk of head gasket failure and leaks. They suit both street performance and competition engine builds. Choose the nut that matches your stud or fastener set, and follow the torque specifications and assembly lube recommendations that ARP provides.