ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs

ARP stainless steel header bolts are 15 percent stronger than Grade 8 steel. These 12-point bolts have a compact head that will allow a socket to fit into those tight, tricky spaces next to the headers.

Cylinder Head Bolts, Pro Series, 12-Point, Chevy, 4.3L, with 18 Degree Hi-Port Heads, Kit

Cylinder Head Bolts, Pro Series, 12-Point, 3/8 in., Chevy, 4.3L, with 18 Degree Hi-Port Heads, Kit

ARP® uses a premium grade 8740 chromoly that is rated far superior to to "aircraft quality". Then, each stud is placed vertically in special racks and precisely heat-treated to 190,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Cylinder Head Studs, 12-Point Nuts, Chrysler, 318, 340, 360, with B1, BS Heads, Kit

Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That’s why ARP head studs are popular among leading Sport Compact/Import racers.

ARP stainless steel intake manifold bolts are 15 percent stronger than Grade 8 steel bolts and have a wide-area flange for better load distribution.

Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That’s why ARP head studs are popular among leading Sport Compact/Import racers.

Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That’s why ARP head studs are popular among leading Sport Compact/Import racers.

Chevrolet Small Block, 1.250", drilled. Stainless 300 with a Nascar Head. 3/8" x 16 thread Prevent intake manifold leaks and are rated at 170,000 psi.

Chevrolet Small Block 2, standard deck and Chevrolet Nascar Small Block 2, drilled. Stainless 300 with a 12 point Head. 3/8" x 16 thread Prevent intake manifold leaks and are rated at 170,000 psi.

ARP stainless steel intake manifold bolts are 15 percent stronger than Grade 8 steel bolts and have a wide-area flange for better load distribution.

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today.

ARP stainless steel intake manifold bolts are 15 percent stronger than Grade 8 steel bolts and have a wide-area flange for better load distribution.

Cylinder Head Studs, Pro Series, Hex Head, Chevy, 4.3L, V6, Kit

ARP stainless steel intake manifold bolts are 15 percent stronger than Grade 8 steel bolts and have a wide-area flange for better load distribution.

These ARP carburetor studs will assist you in gasket placement and help you place the carburetor on your manifold. The studs have a unique nut-starter radius that helps prevent cross-threading. The kits come complete with studs, washers, and hex nuts.

ARP’s Custom Age 625 Plus material is newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation.

The ARP Pro Series Main Bolt Kits are forged from premium 8740 chrome moly and all the bolts feature generous under-head radius and heat treating for utmost reliability. The threads are rolled after heat treating

Cylinder Head Studs, Pro Series, Hex Head, Chevy, 2.8L, V6, 11mm, Kit

Here's just what you need to secure a bellhousing in place. The studs are designed with a radiused head to position the bellhousing and accept nuts without the fear of cross-threading.

These ARP carburetor studs will assist you in gasket placement and help you place the carburetor on your manifold. The studs have a unique nut-starter radius that helps prevent cross-threading. The kits come complete with studs, washers, and hex nuts.

ARP's 207-5402 main studs are designed to meet the exacting standards and demands of professional engine builders and yet they are priced below what you might expect for a product with quality this high.

Cylinder Head Studs, Pro Series, Hex Head, Chevy, 4.3L, V6, Pontiac Raised Runner Heads, Kit

These ARP carburetor studs will assist you in gasket placement and help you place the carburetor on your manifold. The studs have a unique nut-starter radius that helps prevent cross-threading. The kits come complete with studs, washers, and hex nuts.

Cylinder Head Studs, Pro Series, Hex Head, Chevy, 4.3L, V6, Oldsmobile 14 Degree Heads, Kit

ARP's 207-5403 main stud kit is designed to meet the exacting standards and demands of professional engine builders and yet is priced below what you might expect for a product with quality this high.

Cylinder Head Studs, Hex Head, Chrysler, 331, 354, 392 Hemi, Kit

These ARP carburetor studs will assist you in gasket placement and help you place the carburetor on your manifold. The studs have a unique nut-starter radius that helps prevent cross-threading. The kits come complete with studs, washers, and hex nuts.

Here's just what you need to secure a bellhousing in place. The studs are designed with a radiused head to position the bellhousing and accept nuts without the fear of cross-threading

Camshaft positioning is critical on overhead cam engines and ARP makes sure that the cam towers are properly secured through use of these durable bolts and studs. They're made from 8740 chrome moly steel, with threads rolled after heat treat to ensure the optimum fatigue strength. Far superior to OEM fasteners.

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today.

These ARP carburetor studs will assist you in gasket placement and help you place the carburetor on your manifold. The studs have a unique nut-starter radius that helps prevent cross-threading. The kits come complete with studs, washers, and hex nuts.

Install an ARP cam bolt kit and end your camshaft timing worries! ARP quality delivers increased pre-load clamping force and assures positive timing gear register

These ARP carburetor studs will assist you in gasket placement and help you place the carburetor on your manifold. The studs have a unique nut-starter radius that helps prevent cross-threading. The kits come complete with studs, washers, and hex nuts.

Cylinder Head Studs, Pro Series, Hex Head, Chevy, 4.3L, V6, GM 18 Degree High Port Heads, Kit

As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in place, ARP has developed these ultra-strong 200,000 psi bolts that let you exert maximum clamping force.

Cylinder Head Studs, Pro Series, 12-Point Head, Chevy, 4.3L, V6, Kit

Camshaft positioning is critical on overhead cam engines and ARP make sure that the cam towers are properly secured through us of these durable bolts and studs.