Studs

Studs: clamping force that holds a joint together when a bolt won't

A stud is a threaded rod that anchors into a block, head or manifold, then takes a nut on the exposed end. Unlike a bolt, the studs stay put once threaded into the base metal, so you draw the nut down against the mating surface instead of twisting the fastener through the joint as you tighten. That gives you cleaner, more repeatable clamp load, less thread wear in the aluminum you're threading into, and a fixed pilot that lines a head or manifold up before it's ever torqued. It's why people fit them on rebuilds, on boosted engines, and anywhere a joint has to be pulled apart and reassembled more than once.

What's in stock

This category holds 18 stud kits from two brands. ARP accounts for 17 of them, with BLOX Racing filling out the rest. Current pricing runs from $22 to $175 for what's on the shelf right now - that's the live range for in-stock kits, not a fixed price. Sizes here are mostly metric-thread hardware sold in multi-piece kits, like the M8 x 1.25 x 51mm 10-piece broached kit, the M10 x 1.25 x 48mm stainless accessory studs (8 pack), and the BLOX SUS303 stainless intake manifold stud kit.

How to choose

The first thing to match is the job. Accessory and intake-manifold kits like the M10 stainless set and the BLOX manifold kit are built for bolting components onto the engine, not for holding combustion pressure. Get the thread pitch, diameter and length right for the holes you're threading into - an M8 x 1.25 will not do the work of an M10, and length has to clear the flange without bottoming in a blind hole. Stainless kits trade differently than plated hardware, so read each kit's listing for what it's specified for. Price tracks the piece count and the application: smaller accessory sets sit near the low end, larger broached kits toward the $175 top.

What else you need with it

Studs work as part of a fastened assembly, so plan the parts around them. If you're pulling a head, pair them with fresh head gaskets or a full gasket kit, and check your pistons and bearings while the engine is open. Manifold and plumbing work often pulls in fittings and adapters. Everything here lives under the wider Engine Components section.

Fitment and ordering

Confirm thread size, pitch and length against your engine before you order - if you're unsure which kit fits, call fitment help at 813-535-5801 or reach us through contact us. Every order ships with free shipping, and Affirm and Katapult financing is available at checkout.

Studs: clamping force that holds a joint together when a bolt won't

A stud is a threaded rod that anchors into a block, head or manifold, then takes a nut on the exposed end. Unlike a bolt, the studs stay put once threaded into the base metal, so you draw the nut down against the mating surface instead of twisting the fastener through the joint as you tighten. That gives you cleaner, more repeatable clamp load, less thread wear in the aluminum you're threading into, and a fixed pilot that lines a head or manifold up before it's ever torqued. It's why people fit them on rebuilds, on boosted engines, and anywhere a joint has to be pulled apart and reassembled more than once.

What's in stock

This category holds 18 stud kits from two brands. ARP accounts for 17 of them, with BLOX Racing filling out the rest. Current pricing runs from $22 to $175 for what's on the shelf right now - that's the live range for in-stock kits, not a fixed price. Sizes here are mostly metric-thread hardware sold in multi-piece kits, like the M8 x 1.25 x 51mm 10-piece broached kit, the M10 x 1.25 x 48mm stainless accessory studs (8 pack), and the BLOX SUS303 stainless intake manifold stud kit.

How to choose

The first thing to match is the job. Accessory and intake-manifold kits like the M10 stainless set and the BLOX manifold kit are built for bolting components onto the engine, not for holding combustion pressure. Get the thread pitch, diameter and length right for the holes you're threading into - an M8 x 1.25 will not do the work of an M10, and length has to clear the flange without bottoming in a blind hole. Stainless kits trade differently than plated hardware, so read each kit's listing for what it's specified for. Price tracks the piece count and the application: smaller accessory sets sit near the low end, larger broached kits toward the $175 top.

What else you need with it

Studs work as part of a fastened assembly, so plan the parts around them. If you're pulling a head, pair them with fresh head gaskets or a full gasket kit, and check your pistons and bearings while the engine is open. Manifold and plumbing work often pulls in fittings and adapters. Everything here lives under the wider Engine Components section.

Fitment and ordering

Confirm thread size, pitch and length against your engine before you order - if you're unsure which kit fits, call fitment help at 813-535-5801 or reach us through contact us. Every order ships with free shipping, and Affirm and Katapult financing is available at checkout.