1942 STUDEBAKER COMMANDER Performance Parts

ARP Pro Series Connecting Rod Bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up more fatigue strength.

ARP Head Stud Kits are high quality products guaranteeing superior functionality and efficiency.

ARP Rod Bolt Kits are made from the highest quality materials, and guarantee to deliver superior functionality and durability.

ARP Pro Series Cylinder Head Bolt Kits are cold-forged to ensure molecular integrity and heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. These products are available with hex and 12-point heads. They come packaged with hardened parallel washers for even load distribution and accurate torque readings.

ARP Rod Bolt Kits are made from the highest quality materials, and guarantee to deliver superior functionality and durability.

ARP Rod Bolts are made from the highest quality materials, and guarantee to deliver superior functionality and durability.

ARP Replacement Bolts are made from 8740 chrome moly for maximum durability. They are available in either ARP Wave-Loc or standard knurled design.

ARP Connecting Rod Bolts are high quality products guaranteeing superior functionality and efficiency.

ARP Pro Series Connecting Rod Bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up more fatigue strength.

ARP Main Stud Kits are made from the highest quality materials, and guarantee to deliver superior functionality and durability.

ARP Cam Bolts are high quality products guaranteeing superior functionality and efficiency.

ARP Rod Bolt Kits are made from the highest quality materials, and guarantee to deliver superior functionality and durability.

ARP NASCAR Speed Studs are specially designed to accurately position the wheel and to more quickly release and tighten the lug nuts. They are made from heat-treated, 190,000 psi chromoly steel and feature J-form threads, an exclusive nut starter, and a bullet-shaped radius that all but eliminates cross threading. They use a special baked-on dry film lubricant to reduce the possibility of galling and ensure consistent clamp loads and double magnaflux inspection. These products are available in a variety of lengths and knurl diameters

ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.

ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.

ARP Perma-Loc Rocker Arm Adjusters are manufactured from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. The are available with exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, and flush-machined set screws for proper contact on the studs.

ARP Pro Series Connecting Rod Bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up more fatigue strength.

ARP Pro Series Connecting Rod Bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up more fatigue strength.

ARP Air Cleaner Studs are designed to help you gain more air for your engine by allowing you to put a larger filter in your air filter assembly. They are made from the highest quality materials and come packaged with the stud and a nut.

ARP Air Cleaner Studs are designed to help you gain more air for your engine by allowing you to put a larger filter in your air filter assembly. They are made from the highest quality materials and come packaged with the stud and a nut.