ARP 141-5801 Main Cap Stud Kit Chrome Moly - 12-Point 4-Bolt

The ARP 141-5801 Main Cap Stud Kit delivers superior engine block security for high-performance and racing applications. This 4-bolt main configuration features 12-point heads for precise torque application and enhanced clamping force distribution.

Key Features:

• 8740 chrome moly steel construction for maximum strength and durability
• Heat-treated in-house to 200,000 psi tensile strength
• Precision J-form threads rolled after heat-treat for 1000% greater thread strength
• 12-point head design for accurate torque application
• Hardened parallel-ground washers included for proper load distribution
• High-quality nuts included in complete kit
• Eliminates main cap walk and fretting
• Protects engine block threads from damage

ARP main studs provide critical advantages over stock bolts by maintaining precise main bearing alignment under extreme loads. The rolled threads are formed after heat treatment, creating a fastener with superior fatigue resistance compared to conventional cut-thread designs. Each kit includes all necessary hardware for professional installation, including hardened washers engineered to ensure even load distribution across the main cap surface.

Ideal for performance street engines, competition builds, and forced induction applications where main cap stability is essential for engine longevity and reliability.