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All sizes are also available in a double anodised black finish with a high corrosion resistance to suit E85 and alcohol based fuel applications
the fitting is 17mm
The housing uses an O-ring to seal instead of paper gasket
Part Number: AR400-8537
Both materials are nominally rated at 180
ARP Chevrolet Small block-20 5/8 – Harmonic Balancer Bolt, 12-Point Black Oxide AR134-2501 BANJOS All sizes are also availableHarmonic Balancer Bolt, 12 Point Black Oxidefits SB Chev 7 16 20 Thread x 2. 470" UHL, 5 8" Socket Brand: ARP Part Number: AR134 2501 Description: HARMONIC BALANCER BOLT As the crankshaft flexes and twists, the harmonic 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 that let you exert maximum clamping force. Special features include 1 4"
