The ARP head stud kit replaces the factory head bolts on the BMW S58 engine in the G8X M2, M3 and M4 with studs and nuts. Studs give a higher and more even clamping load on the cylinder head than stretch bolts, which helps keep the head gasket sealed in a built or high-boost engine. Each stud is made from 8740 alloy, heat treated and centreless ground so it runs as true as possible. The kit includes every stud needed along with matching 12-point nuts, so it suits any S58 rebuild or engine build.
Features
- Converts the S58 from factory head bolts to head studs
- Premium 8740 alloy, stronger than common aircraft-grade fasteners
- Heat treated studs for consistent strength
- Centreless ground for near-perfect concentricity
- Higher, more evenly spread clamping force on the cylinder head
- Complete kit with all studs and matching 12-point nuts
Specifications
- Brand: ARP
- Product Type: Head Stud Kit
- Engine: BMW S58 3.0L twin-turbo inline six
- Material: 8740 alloy, heat treated
- Finish: Centreless ground
- Includes: Head studs and 12-point nuts
- Part Number: 201-4705
Vehicle Compatibility: 3 applications across 1 make. Select a make to view.
BMW (3)
| Model | Variant | Engine | Years |
|---|---|---|---|
| M2 | G87 | 3.0L S58 | |
| M3 | G80 / G81 | 3.0L S58 | |
| M4 | G82 / G83 | 3.0L S58 |
Please confirm fitment against your vehicle before ordering. Contact us if you need help selecting the right part.