ARP Main Stud Kit Chrome Moly

ARP Chrome Moly main stud kits are crankshaft main bearing cap studs. They replace factory main cap bolts to give the engine block's main caps a stronger, more consistent clamping force. They suit performance street, racing, and high-output engine builds. Many builders also call them main bearing studs, main cap studs, or main bolt kits.

Key Features:

• Chrome moly construction: The fasteners are made from chromium-molybdenum alloy steel, which has high tensile strength and good fatigue resistance.
• Rolled threads: ARP typically rolls its threads after heat treatment. This improves fatigue life and gives a more precise thread form than cut threads.
• Better clamp load: Studs apply more even clamping force than bolts. They also help keep main bore alignment and bearing crush consistent.
• Less block distortion: Studs load the cap straight along the axis without the twisting force that comes from turning a bolt head. This helps keep the main bores round.
• Complete kit: Kits are designed to include the hardware needed to secure the main caps, such as studs, nuts, and washers. Contents vary by application.
• Quality control: ARP makes its fasteners in the USA and holds them to strict quality standards.

Use the assembly lubricant and torque specifications that ARP supplies with each kit. Following them gives accurate preload and the best reliability. Choose the child item that matches your engine application.