Description

This installation service is specifically designed for RK Autowerks Oversized ARP Head Stud Kits for B58 and S58 engines. These kits require precision block machining and head clearancing to accommodate the increased stud diameter and ARP insert washers. Whether you’re repairing damage from a failed head gasket or proactively reinforcing a high-boost build, our service transforms your engine into a more robust foundation for serious power. All machining is performed in-house by experienced technicians who understand the nuances of BMW’s aluminum blocks. The service ensures proper torque retention, eliminates thread failure risk, and increases clamping force across the head — critical for builds pushing 800–1000+ WHP.

Key Features:
• Performance Benefit: Prevents head lift, thread failure, and blown head gaskets under extreme boost
• Construction Material and Method: Block threads are machined for oversized stud fitment and hardened ARP insert washers
• Fitment & Integration: Designed exclusively for use with RK Oversized Stud Kits (B58/S58 applications)
• Optional Add-Ons: Head gasket, head resurface, or full engine build support if needed
• Design/Engineering Insight: Custom ARP hardware and inserts require precise machine work for proper seating and long-term reliability

Technical Specifications:
Material: Hardened ARP oversized studs and insert washers (sold separately)
Construction Method: Block thread machining + head clearance for oversized diameter
Install Type: Engine out, machine-in-shop only
Compatibility: Requires RK Oversized Stud Kit. Not compatible with standard ARP head studs

Applications:
BMW B58 Engines:

• A90/A91 Supra

• G-Series 340i, 440i

• F-Series M340i

• Other B58-swapped platforms

BMW S58 Engines:

• G80 M3

• G82 M4

• G87 M2

• X3M / X4M

Installation and Support:
This is not a drop-in service — your block must be sent in to our shop. Install includes full machining, insert washer fitment, and reassembly prep. Please email sales@rkautowerks.com to coordinate shipping or scheduling. We’ll walk you through the process and ensure the correct hardware is purchased and prepped.
Link to stud kit: ARP Head Stud Kit, BMW B58 & S58 Oversized

Why Choose RK Autowerks?
We don’t just install — we engineer, race, and refine every solution in-house. From machining to assembly, our team treats each engine like it’s going in our own car. Our oversized stud kits and install procedures are tested in builds pushing well over 1000 WHP. Real-world abuse, real results, and real support.

Warranty:
RK Autowerks Warranty And Legal