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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Dimensions - 270mmX124mm
Improve more grip and better handling
Car specific sporty-harmonic damping setup
Manufacturer's Part Number: 251-2501
ARP BMW E46 M3/S54 12pt head stud kit HKS Dimensions - 270mmX124mmVirtually every top professional BMW engine builder relies on ARP Pro Series head studs, particularly on the S54 3. 2 litre engine. ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is heat treated to 200,000 psi, ensuring complete heat penetration. ARP studs are threaded after heat treat, which gives them 1000% (that's ten times!) better fatigue strength than studs threaded prior to heat treat. Threading