ARP Custom Age 625+ Rod Bolts Kit 1.500" under head 3/8" set of 8 300-6704

ARP Custom Age625+ General replacement
Thread Size 3/8 
Under head length 1.500 Thread Length 0.550
Grip Length 0.145 
Head Height 0.388 
Wrench Size 7/16 
Collar Diameter 0.555 
Material Custom Age 625+ 
Set Qty 8

A large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP rod bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP.



CUSTOM AGE 625 PLUS:

 This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000-280,000 psi.