S/S Stud Kit - (4) M8 x 1.25in x 38mm

The S/S Stud Kit – (4) M8 x 1.25in x 38mm from ARP is purpose-built for high-performance engine builders, street car enthusiasts, and mechanics who demand reliability in critical fastening applications. This four-piece stud set addresses a fundamental need in automotive assembly: replacing factory hardware with fasteners that can withstand extreme combustion pressures, thermal cycling, and vibration without loosening or stripping. Whether you're building a forced-induction engine, upgrading an older platform, or restoring a performance vehicle, quality studs form the foundation of a secure, long-lived power plant.

ARP studs are manufactured from premium alloy steel and feature precise threading (M8 x 1.25 metric pitch) that ensures consistent clamping force and eliminates the galling and corrosion issues common with standard fasteners. The 38mm length is engineered for applications requiring a specific stack-up depth, allowing proper engagement through manifolds, intercoolers, or auxiliary components while maintaining full thread grip in the parent material. ARP's proprietary manufacturing process yields studs with superior tensile strength and fatigue resistance compared to OEM hardware, meaning your engine stays together under the stress of acceleration, detonation, and sustained boost.

This stud kit is ideal for turbo and supercharged builds, custom engine swaps, and any application where vibration isolation or thermal expansion demands predictable fastener behavior. The compact dimensions and light weight (0.19 lbs) make installation straightforward, and the M8 size covers a broad range of engine bay and mounting scenarios across domestic and import platforms. Always torque studs to ARP's specified value using a calibrated wrench and quality thread lubricant to achieve the clamping loads these fasteners are engineered to deliver.