The ARP 203-5403 Pro Series Main Stud Kit is engineered for high-performance builds and designed specifically for the Toyota 4AGE engine. These Pro Series studs are cold-forged from 8470 chrome moly steel to ensure superior molecular integrity and strength. Each stud is heat-treated prior to thread rolling and machining, delivering a tensile strength rating of up to 190,000 psi—ideal for demanding motorsport and high-horsepower applications.

Finished with a black oxide coating for enhanced corrosion resistance, these studs help eliminate main cap walk and fretting, while also protecting the threads in your engine block. Whether you’re building a street machine or a track-ready racer, ARP’s precision and reliability make this kit a must-have upgrade.

Package Contents:

• ARP 8740 NiCrMo Steel Main Stud (10)
• ARP Parallel-Ground Hardened Washers (10)
• ARP 12-Point Nuts (10)
• ARP Moly-Lube (1)
• Detailed installation instructions (1)