ARP Spring Cup Fasteners for Performance Engines

Description

New ARP Spring Cups Anodized to mil spec. Deeper relief in center of cup so you can use a thicker insulator and shorter screw. Bottom of cup is stepped to line up with hardware. Aircraft grade aluminum. Barrel of cup is thinner for light weight. Anodized 1/2 black and 1/2 red. (6 pairs per card).

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