ARP 135-4208 Head Stud Kit for Big Block Chevy World Products Merlin Aluminum Block

The ARP 135-4208 Head Stud Kit is engineered specifically for Big Block Chevy applications using World Products Merlin aluminum blocks. These high-performance cylinder head studs provide superior clamping force and reliability compared to conventional head bolts, making them essential for high-horsepower and high-boost applications.

Key Features:

• Manufactured from premium 8740 chrome moly steel for exceptional strength and durability
• Heat-treated to 200,000 PSI tensile strength for maximum clamping force
• Precision CNC-machined threads rolled after heat-treat to prevent fatigue failure
• Studs eliminate the main cause of head gasket failure by providing more accurate and consistent torque loading
• 12-point nuts allow for fine-tuned torque adjustments in precise increments
• Includes premium-quality hardened parallel-ground washers for even load distribution
• Complete kit includes studs, nuts, and washers ready for installation

ARP fasteners are designed and manufactured in the USA to meet the demands of professional engine builders and serious performance enthusiasts. Each stud undergoes rigorous quality control to ensure precise dimensional tolerances and consistent performance. The kit comes with ARP Ultra-Torque assembly lubricant to ensure proper installation and accurate torque readings.