ARP BMW S50 S54 cylinder head stud bolt E46 M3 Z4 201-4303

ARP BMW S50 S54 cylinder head stud bolt E46 M3

Made in USA

ARP Bolts are used by virtually every top professional engine builder.
Simply put, there is no better bolt setup on the market today.

These main bearing studs are manufactured to exacting tolerances, heat treated, centerless ground and rolled to ensure consistent clamping force and durability.

Only premium grade 8740 alloy with a 190,000 psi tensile strength material is used, which is far superior to "aircraft grade" steel alloys.
Studs allow for easy installation of cylinder heads and gaskets, eliminating the need for alignment

These ARP studs are ideal for racing engines.

Scope of delivery:
14x ARP stud bolt
14x ARP 12-point nut
1x ARP Moly Assembly Lube

Suitable for:
- BMW M3 (E46) S54 3.2L
- BMW Z4 (E85) M Coupe S54

Engine code letter:
S50 / S54