ARP-203-4205 Head Studs for 1993-1998 Toyota Supra JZA80 2JZ-GTE / Soarer 1JZ-GTE

• Brand: ARP
• Part Number: ARP-203-4205
• Country of Manufacture: United States

ARP Pro Series head studs are the standard for professional engine builders seeking the highest reliability and performance in competition powerplants. Manufactured from premium grade 8740 alloy and ARP's proprietary ARP2000 alloy, these studs offer strength ratings significantly higher than typical “aircraft” quality steels—190,000 psi for 8740 material and 220,000 psi for ARP2000.

Each stud is vertically racked and precisely heat-treated to ensure uniform heat penetration, resulting in consistent metallurgical properties and superior durability. Unlike lesser quality studs, ARP head studs are centerless ground and thread rolled after heat treatment, delivering exceptional dimensional accuracy and surface finish. This precision allows for perfect alignment of gaskets and cylinder heads, making assembly straightforward and reliable.

Stud installation makes engine assembly and servicing easier, especially in high-performance and racing applications where quick, accurate service is critical. Studs provide more consistent and accurate torque loading compared to bolts, as they eliminate the twisting forces experienced during torquing. Installed hand-tight, the stud stretches only along its vertical axis when the nut is torqued, ensuring even clamping force across the cylinder head.

ARP is recognized as a world leader in fastener technology, offering components for a wide range of applications from OEM replacement to high-end motorsports, including Formula 1, IndyCar, NASCAR, NHRA drag racing, and marine. All manufacturing processes are controlled in-house in the United States, ensuring the highest quality standards.