ARP High Boost stud bolt Kit cylinder head suitable for BMW N54B30 x35i

Special stud bolt kit from ARP and BAR-TEK® Motorsport for the cylinder head for your BMW 3.0L 24V (N54) such as in the 135i, 335i and many more. 

11 mm bolts are used here. This is the only way to ensure that the bolts can withstand boost pressure beyond 2 bar without any problems. 

This kit is an upgrade to our This requires the four outer 9mm holes in the engine block to be drilled and tapped to increase their size to 11 mm holes. This ensures that all holes in the engine block are the same size and can accommodate all 14x 11 mm bolts. By using M11 studs at all positions, an even distribution of force on the surface of the cylinder head gasket is achieved.
Includes: 14x 11 mm studs, 14x washers and 14x nuts. 

High performance bolts are made of high strength and heat treated 8740 chrome molybdenum forged steel and are therefore ideally suited for use in racing engines. 

• Using the most advanced manufacturing processes, our block stud bolt achieve the highest strength 
• Tensile strength of 200,000 psi (13.8t/cm²) 
• Absolutely perfectly rounded and straight bolts for a first-class assembly 
• Ten times stronger J-threads than stock bolts due to thread cutting after curing 
• Harder, more durable, more stable and better processed than standard products 
• Absolute quality product for professional use 
• Reusable 

Tightening torques: 

•  M11 bolts: 110 Nm in 3 steps 

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