The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.

More From This Category

ARP Cylinder Head Stud, Pro-Series, 12-point Head, Volkswagen/ Audi, Audi 5 Cyl, 10 valve, Kit

ARP Cylinder Head Stud, Pro-Series, 12-point Head, Volkswagen/ Audi, Audi 5 Cyl, 10 valve, Kit

$257.80

Trick Flow Cylinder Head Bolt Kit, Hex Head, Chromoly, Black Oxide, for Aluminum Heads, For Chevrolet 396-454, Each

Trick Flow Cylinder Head Bolt Kit, Hex Head, Chromoly, Black Oxide, for Aluminum Heads, For Chevrolet 396-454, Each

$481.40

ARP Cylinder Head Bolts, 12-point Head, Pro-Series, For Chevrolet BB, Mark V w/ 502 Heads, Kit

ARP Cylinder Head Bolts, 12-point Head, Pro-Series, For Chevrolet BB, Mark V w/ 502 Heads, Kit

$350.36

ARP Valve Cover Bolts, Chromoly, Black Oxide, 12-Point, 1/4 in.-20 Diameter, SBC Brodix Valve Covers, Set of 4

ARP Valve Cover Bolts, Chromoly, Black Oxide, 12-Point, 1/4 in.-20 Diameter, SBC Brodix Valve Covers, Set of 4

$29.64

ARP Cylinder Head Bolts, 12-point Head, High Performance, For Ford SB, 302 w/ 351 Windsor Heads, Kit

ARP Cylinder Head Bolts, 12-point Head, High Performance, For Ford SB, 302 w/ 351 Windsor Heads, Kit

$218.74

ARP Rocker Arm Studs, High Performance, Pro-Series, 7/16 in.-20 Thread, 2.8 in. Effective Stud Length, Kit

ARP Rocker Arm Studs, High Performance, Pro-Series, 7/16 in.-20 Thread, 2.8 in. Effective Stud Length, Kit

$283.11