ARP Fasteners

BB Chevy rocker arm stud kit Aluminum head (8pcs)

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in - you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact - designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models.

NOTE: Not to be used with OEM-style, self-locking nuts. To be used with 's patented Perma-Loc adjusters IMPORTANT TECH NOTE
It is highly advisable to determine what the optimum rocker arm stud length is for your particular application. This is especially true when "long" pushrods and valves are employed - you should raise the "installed height" of the rocker arm to compensate for the longer-than-stock components.

Hex Bolt Kit, Stainless 300, Big Block Chevy

The engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. They're designed to make it as easy as possible to install a pan and seal it properly. You'll note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross-threading. For those who prefer bolts, ARP's got you covered, too. Both are available in black oxide finished chrome moly steel or rust-proof stainless steel. Also, take your pick from conventional hex nuts (or bolt heads) and a space-saving 12-point design. The stud kits come complete with a special locking flanged nut, while the bolt kits come with washers.

Hex Stud Kit, Stainless 300, Big Block Chevy

The engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. They're designed to make it as easy as possible to install a pan and seal it properly. You'll note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross-threading. For those who prefer bolts, ARP's got you covered, too. Both are available in black oxide finished chrome moly steel or rust-proof stainless steel. Also, take your pick from conventional hex nuts (or bolt heads) and a space-saving 12-point design. The stud kits come complete with a special locking flanged nut, while the bolt kits come with washers.

Big Block Chevy w/undercut studs - Pro Series Studs

High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head re-torquing. All High Performance Series bolts are 170,000 PSI (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.

Big Block Chevy Brodix w/undercut - Pro Series 12-Pt. Bolts

High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head re-torquing. All High Performance Series bolts are 170,000 PSI (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.

Big Block Chevy Dart or Merlin Heads with undercut stems - Pro Series 12-Pt. Bolts

High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head re-torquing. All High Performance Series bolts are 170,000 PSI (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.

ARP BBC Flywheel/Flexplate Bolts

• Chevy 90° V6 & 265-454 with 2-pc Rear Seal
• Ford 289-460
• 7/16"-20 x 1.00"

Flywheel and flexplate bolts play an important role in the performance and safety of both street and race cars, which is why the fastener experts at ARP developed bolts far superior to OE hardware. ARP offers two series of flywheel/flexplate bolts: Pro and High-Performance. Forged from aerospace alloy and heat-treated prior to thread rolling and machining, both series feature a flat 12-point head design and larger-than-stock shank for improved strength and flywheel register. The premium grade Pro Series has a 190,000 psi rating (originally developed for NASCAR Winston Cup competition), and the popular High-Performance Series has a 170,000 psi rating.

Small Block Chevy & Big Block Ford w/roller rockers & girdles with or w/o guide plate - High Performance Series

With roller rockers and girdles
Typical Ford small block
• B: 1.900"
• C: .750"
• D: 1.000"
• E: 7/16"-20
• F: 7/16"-14

ARP High Performance and Professional Series Rocker Arm Studs offer improved reliability through longer thread engagement in the cylinder head and an extra large radius for reduced flex. Special applications have been designed for aftermarket heads to assure proper fit. High Performance Series are rated at 170,000 PSI while Professional Series are rated at 190,000 PSI.

Big Block Chevy with or w/o guide plates - High Performance Series

ARP High Performance and Professional Series Rocker Arm Studs offer improved reliability through longer thread engagement in the cylinder head and an extra large radius for reduced flex. Special applications have been designed for aftermarket heads to assure proper fit. High Performance Series are rated at 170,000 PSI while Professional Series are rated at 190,000 PSI.

Small Block Stud Kit, Chevy V8 Only

You've probably heard many a horror story about someone losing an engine when the oil pump fell off into the pan because of a broken bolt. Well, you can put your mind at ease when using ARP's premium grade oil pump bolt and stud kits. You have a choice of black oxide finished 8740 chrome moly steel or low maintenance stainless steel Both are nominally rated at 170,000 PSI tensile strength to provide you with plenty of clamping force. Conventional hex head designs. This is "insurance" no conscientious engine builder should be without! The studs come with flat washers and nuts.

Small Block & Big Block 3.125", High Volume Stud Kit

You've probably heard many a horror story about someone losing an engine when the oil pump fell off into the pan because of a broken bolt. Well, you can put your mind at ease when using ARP's premium grade oil pump bolt and stud kits. You have a choice of black oxide finished 8740 chrome moly steel or low maintenance stainless steel Both are nominally rated at 170,000 PSI tensile strength to provide you with plenty of clamping force. Conventional hex head designs. This is "insurance" no conscientious engine builder should be without! The studs come with flat washers and nuts.

Ford 5/8" diameter, 5/8" head

As the crankshaft flexes and twists, the damper absorbs incredible amounts of kinetic energy. To ensure that the damper is locked in position, ARP has developed these ultra strong 200,000 psi bolts let you exert maximum clamping force to ensure that the balancer is locked in position. Extra tall 12-point head accepts deep sockets. Includes 1/4" thick wide area washer.

Ford FE Hex, Stainless 300

One of the most critical, yet often overlooked, fasteners used in any engine locks the timing in place. ARP offers these premium grade studs, which are equipped with vibration-resistant J-form threads, in black oxide finished chrome moly or rust-proof stainless steel. A special bullet nose helps guide nut into place without cross-threading. Choice of conventional 6-point or space-saving 12-point nuts. Washers included.

Pontiac V8 '64 & later rocker arm stud kit 7/16" with 1/2" coarse

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in - you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact - designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models.

NOTE: Not to be used with OEM-style, self-locking nuts. To be used with 's patented Perma-Loc adjusters IMPORTANT TECH NOTE
It is highly advisable to determine what the optimum rocker arm stud length is for your particular application. This is especially true when "long" pushrods and valves are employed - you should raise the "installed height" of the rocker arm to compensate for the longer-than-stock components.

ARP Cam Bolts, SB & BB Chevy

In High Performance (170,000 psi) or Pro Series (200,000 psi), these quality ARP cam bolts deliver increased preload clamping force and assure positive timing gear register. With increased material strength, valve train harmonics and stress are overcome. The bolts also feature oversized head flange for button retention and reduced socket head size to facilitate easy installation and removal. Appropriate fasteners included for your application.

• Small & Big Block Chevy
• 5/16-18
• .750" UHL
• 3/pkg

Small Block Chevy 2 bolt main - HP Series Hex Bolts

Far superior to any other bolt kit offered. Forged from 8740 chrome moly, all bolts feature generous under-head radius. The threads are rolled after heat-treating, giving them about 1000% longer fatigue life than most main bolts. Nominal rating of 180,000 psi. Parallel-ground, hardened washers are included with each kit.

Small Block Chevy 2 bolt main - HP Series Studs

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parrallel-ground washers and high quality nuts. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

Small Block Or Big Block Chevy 3/8" top x 7/16" lower with or w/o guide plates - Professional Series

ARP High Performance and Professional Series Rocker Arm Studs offer improved reliability through longer thread engagement in the cylinder head and an extra large radius for reduced flex. Special applications have been designed for aftermarket heads to assure proper fit. High Performance Series are rated at 170,000 PSI while Professional Series are rated at 190,000 PSI.

Small Block Chevy w/splayed caps  - Professional Series Studs

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parrallel-ground washers and high quality nuts. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

ARP Rocker Arm Studs, 7/16" - Typical SB application

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in - you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact - designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models.
NOTE: Not to be used with OEM-style, self-locking nuts. To be used with ARP's patented Perma-Loc adjusters