ARP 8740 Chromoly Head Stud Kit for BMW E46 M3 S54/S54B32 – Cylinder Head Fasteners with 12-Point Nuts | Performance Head Bolts Replacement | MLS Gasket Clamp | Engine Rebuild, Turbo/Supercharged, Track/Drift

Upgrade your BMW M3 E46 S54B32 top end with a premium stud and nut set engineered for serious performance, reliability and repeated serviceability. This 8740 chromoly engine head fastener package delivers rock-solid clamping, consistent torque application and outstanding gasket retention for road, track day, drift and high power builds. A proven replacement for factory bolts, it is the go-to solution when you want confidence under sustained RPM, heat and boost.

Built for power, precision and peace of mind

• High tensile 8740 chromoly steel for exceptional strength and durability
• Accurate, repeatable torque settings for precise assembly and rebuilds
• Even load distribution across the head to help resist lift at high cylinder pressures
• Ideal during engine refreshes, performance builds and preventative maintenance
• Excels with naturally aspirated, turbocharged and supercharged S54 applications

Quality you can trust

• Properly heat treated and centreless ground for concentricity and straightness
• Includes matched 12 point nuts for secure, space-efficient fastening
• Designed to deliver long term sealing integrity with MLS head gaskets

Why enthusiasts choose this upgrade

We use this stud kit on our own S54 builds and customer cars, and the feedback is consistently excellent. Faster, more confident reassembly, reliable clamping under abuse and fewer headaches when chasing power. If you are refreshing an S54B32 or preparing a boosted M3, this is the smart hardware choice for the cylinder head interface.

Vehicle compatibility

BMW E46 M3 with the S54 engine.

What is included

• Complete head stud set for one S54 engine
• Matching 12 point nuts

Professional fitting

Want it installed properly the first time Our team at MJ Modifications in Warwickshire can handle fitting, torque procedure and build support. Request a fitting quote at info@mjmodifications.co.uk.

Search-friendly terms

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