ARP Main Stud Kit Chrome Moly Steel

The ARP main stud kit in chrome moly steel is a engine crankshaft main bearing cap stud set. It is designed to replace factory main cap bolts and clamp the main bearing caps securely to the engine block. Also known as main cap studs or main bolt kits, these fasteners help maintain bearing bore alignment in high-output street, racing and performance engine builds.

Key Features:

• Chrome moly steel construction gives high tensile strength and fatigue resistance for demanding engine loads
• Rolled threads improve fatigue life and clamping consistency compared with cut threads
• Precision-machined to hold tight tolerances for reliable, repeatable preload
• Stud-style design allows more accurate torque and a more even load on the main caps than standard bolts
• Engineered for performance use to help maintain main bearing cap and crankshaft bore stability at higher power levels

ARP is a well-known American manufacturer of high-performance fasteners and has a long record in racing and performance engine building. Each kit is intended to give engine builders a strong, dependable upgrade over stock main cap hardware. Select the correct variant for your engine from the options on this page.