ARP 135-4008 BBC Head Stud Kit for AFR 18 Degree Heads

The ARP 135-4008 head stud kit is specifically engineered for Big Block Chevrolet engines equipped with Air Flow Research (AFR) 18-degree cylinder heads. This precision-manufactured kit delivers the superior clamping force required for high-performance and racing applications where extreme cylinder pressures demand more than factory fasteners can provide.

Premium 8740 Chrome Moly Construction:

• Manufactured from premium grade 8740 chrome moly steel alloy
• Heat-treated to deliver tensile strength between 180,000-210,000 psi
• Threads rolled after heat-treat for superior fatigue strength
• Centerless ground for precise concentricity and proper alignment
• Black oxide finish for corrosion resistance and durability

Professional-Grade Features:

• Hex head design for secure wrenching and installation
• Complete kit includes studs, hardened washers, and hex nuts
• Application-specific design for AFR 18-degree BBC cylinder heads
• Provides consistent, even clamping force across the head gasket
• Eliminates head gasket failure in high-boost and high-compression applications

ARP studs are the clear choice of professional engine builders and racers worldwide. Each component is manufactured to exacting tolerances, ensuring cylinder heads and gaskets align perfectly during assembly. Ideal for forced induction, nitrous oxide, and naturally aspirated performance builds where reliability is critical.