ARP Main Stud Kit for BMW S58 Engine

Overview

ARP Main Stud Kit designed to replace BMW OEM part number 11118604584 for S58 engines. Provides uniform clamping force across main bearing caps, improving block rigidity and stability for enhanced power transfer, throttle response, and horsepower output. Includes ARP Ultra-Torque fastener assembly lubricant, washers, and nuts. May require line honing of main bearing bores for proper fitment and alignment. Torque specifications: 20 ft-lbs, 40 ft-lbs, 60 ft-lbs (with provided lubricant).

Installation summary

Installation of the ARP Main Stud Kit for the BMW S58 engine is an expert-level job intended exclusively for professional engine builders and experienced mechanics. The process requires complete engine disassembly, precision torque wrenches, and potentially line honing the main bearing bores to ensure proper alignment and fitment. During installation, you must strictly follow the multi-step torque sequence of 20, 40, and 60 foot-pounds using the included ARP Ultra-Torque fastener assembly lubricant to guarantee uniform clamping force and prevent catastrophic bottom-end failure. Because this critical procedure requires specialized machining knowledge and poses a high risk of engine damage if done incorrectly, professional installation is strongly recommended.

AI-generated overview — always verify against the official install instructions.