BMW M3 S14B23, M10B20 ARP Main Stud Kit (M10)
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BMW M3 S54B32 ARP Main Stud Kit
ARP Pro Series fasteners are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and the threads are rolled to provide greatly improved fatigue strength compared with standard OEM fasteners.
Designed for high-combustion and performance engines where durable, reliable fastening is required.