ARP 2000 Head Stud Kit for Subaru Impreza GT Turbo WRX STI EJ20 EJ22 EJ25 DOHC

Here is our ARP 2000 Lightweight Head Stud Pack for Subaru Impreza GT Turbo WRX STI EJ20 EJ22 EJ25 DOHC

• ARP brand reinforced cylinder head studs
• For Subaru Impreza GT Turbo WRX STI EJ20 EJ22 EJ25 DOHC
• 12 point nuts
• The best compromise for an engine rebuild or extensive preparation
• Highly superior strength to OEM

Different materials and processes are used by ARP to manufacture their products depending on the intended applications. Here is a summary:

• ARP 8740 (Chromoly) : This is the material with an unbeatable quality/price ratio. To date, it offers excellent results and performance for most so-called "racing" applications. Thanks to its different surface treatments and heat treatments used by ARP during design and manufacturing, this material has a resistance of around 200,000 psi.
• ARP 2000 : This high-performance steel alloy has been specially designed to offer you increased resistance compared to the famous 8740. It can withstand pressure peaks of up to 220,000 psi. The ARP 2000 is often used for engines in very intensive disciplines such as circuit racing or drag racing or drifting.
• L19 : This so-called "premium" category steel has undergone successive treatments which give it a resistance much higher than ARP 2000 (260,000 psi). L19 steel solutions are often installed in very extreme applications on circuits and dragsters and on very high efficiency engines. However, like ARP 2000 and 8740, L19 is particularly sensitive to corrosion and therefore requires somewhat special precautions for use.

STR Performance distributes the ARP brand, if you are looking for a particular reference or you cannot find what you are looking for, do not hesitate to contact our sales department via the Contact page of the site.

ARP tightening instruction click HERE