ARP Subaru EJ Series DOHC Custom Age Head Stud Kit

The ARP Custom Age 625+ Head Stud Kit is a high-performance fastener set designed specifically for Subaru WRX and WRX STI models equipped with EJ20 and EJ25 engines. Crafted from advanced super-alloy materials, these head studs deliver exceptional strength and durability, making them ideal for high-horsepower builds and demanding applications. The kit ensures optimal clamping force and engine reliability under extreme conditions, supporting performance upgrades and long-term engine integrity. Engineered for precision and quality, these studs help prevent head gasket failures and maintain proper cylinder head sealing during aggressive driving or tuning.

Designed for Subaru WRX and STI models from 2002 to 2021, this head stud kit is a direct replacement for OEM fasteners, providing a reliable upgrade for both stock and modified engines. Suitable for street, track, or off-road use, it enhances engine performance and longevity when installing high-performance components or undertaking engine rebuilds. The kit includes all necessary fasteners for installation, ensuring a secure and precise fit. Compatibility covers a wide range of EJ20 and EJ25 engine configurations, making it a versatile choice for Subaru enthusiasts seeking durability and consistent performance.