Description
Ensure maximum bottom-end durability with the ARP Main Stud Kit, crafted from premium 8740 chrome moly steel. Heat-treated to a tensile strength of 200,000 psi, these studs eliminate main cap walk and fretting under high loads. Precision J-form threads rolled after heat treatment deliver unbeatable fatigue strength and thread integrity. Each kit includes hardened parallel-ground washers and high-strength 12-point nuts for consistent and even clamping force. Trusted by top engine builders, ARP main studs are a must for any performance engine build.
ARP Main Stud Kits are engineered for superior engine reliability under extreme conditions. These fasteners offer a major upgrade over OEM bolts by reducing crankshaft flex and helping maintain precise bearing alignment. Whether you’re racing or building a high-powered street engine, ARP’s advanced metallurgy and manufacturing deliver unmatched strength and long-term performance. With simple installation and provisions for windage trays in some kits, ARP studs provide a critical foundation for your rotating assembly.
Features:
- Made from 8740 chrome moly steel
- Heat-treated to 200,000 psi tensile strength
- J-form threads rolled after heat treatment
- Prevents main cap walk and fretting
- Hardened parallel-ground washers included
- Aerospace-quality 12-point nuts included
- Corrosion-resistant black oxide finish
- Ensures consistent and accurate torque values
Specifications:
- Main Bolt Style: 2-bolt
- Fastener Style: Stud
- Fastener Nut Style: Standard 12-point
- Works with Windage Tray: No
- Fastener Tensile Strength (psi): 200,000 psi
- Nuts Included: Yes
- Washers Included: Yes
- Quantity: Sold as a kit
Included:
- (1) Main Stud Kit
Fitment:
- 2007-2013 Mazda Mazdaspeed3 2.3L
- 2006-2007 Mazda Mazdaspeed6 2.3L
Note:
- Lifetime Warranty
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