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

COMP Cams Rocker Arm Stud, Hi-Tech, 7/16 in. Base Thread and 1/2 in. Rocker Thread, Set of 16

COMP Cams Rocker Arm Stud, Hi-Tech, 7/16 in. Base Thread and 1/2 in. Rocker Thread, Set of 16

$624.73

ARP Valve Cover Studs, Black Oxide 12-Point, Stamped Steel Cover, 1/4 in, 8 Pieces

ARP Valve Cover Studs, Black Oxide 12-Point, Stamped Steel Cover, 1/4 in, 8 Pieces

$58.56

ARP Cylinder Head Stud, Pro-Series, 12-point Head, For Nissan/ Datsun, 3.8L (VR38DETT) DOHC V6 Custom Age 625+, Kit

ARP Cylinder Head Stud, Pro-Series, 12-point Head, For Nissan/ Datsun, 3.8L (VR38DETT) DOHC V6 Custom Age 625+, Kit

$1,679.16

MILODON Cylinder Head Studs, Chromoly, Black Oxide, Hex Head, For Holden, Straight 6-Cylinder, Kit

MILODON Cylinder Head Studs, Chromoly, Black Oxide, Hex Head, For Holden, Straight 6-Cylinder, Kit

$245.34

ARP Cylinder Head Bolts, Hex Head, High Performance, AMC, 304-360-390-401, (1970 & later) w/ Edelbrock Heads 1/2 in, Kit

ARP Cylinder Head Bolts, Hex Head, High Performance, AMC, 304-360-390-401, (1970 & later) w/ Edelbrock Heads 1/2 in, Kit

$233.16