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Maximise head gasket sealing and engine reliability with the ultimate fastener upgrade for the BMC A-Series. This comprehensive 11-stud kit is engineered for high-compression competition engines, providing a significant increase in clamping force over standard bolts or 9-stud setups.

Product Specs

• Part Number: 206-4204
• Configuration: 11-Stud Kit (High-performance/Race spec)
• Material: 8740 Chrome Moly steel
• Tensile Strength: Rated at 200,000 psi
• Compatibility: All 1275cc and modified 11-stud A-Series engines
• Includes: 4 additional studs, nuts, and washers for the rocker pedestals

Why Choose ARP Pro Series Studs?

• Superior Clamping: Eliminates the "stretch" associated with standard bolts, ensuring consistent head gasket compression under extreme cylinder pressures.
• Precise Alignment: Every stud is centreless ground for exceptional straightness, allowing the cylinder head and gasket to glide perfectly into position.
• Thread Integrity: Threads are rolled after heat treatment, giving them 2000% better fatigue strength than inferior studs threaded before hardening.
• Complete Package: This kit provides everything needed for a competition-ready top end, including specialized studs for the rocker posts to ensure a stable valvetrain.

Installation Tip: We recommend using ARP Ultra-Torque Fastener Assembly Lubricant during assembly to achieve the most accurate and consistent preload on every stud.

[ARP head stud kit for BMC A-series engines. This is an 11 stud kit for competition engines. It also comes with the 4 additional studs for the rocker posts.]

[206-4204]