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The Grams Performance bottom adapter big O-ring is a replacement Viton seal for 14mm fuel injectors used with specified Denso-style adapters. With a 7.5mm ID, 14mm OD and 3.5mm width, it’s sold individually and intended to provide leak-free sealing when pairing larger injector bottoms to matching adapter hardware. Use with the listed adapter part numbers for correct fitment.
Grams Performance Bottom Adapter Big O-Ring (Used w/Denso Adapter G2-99-0101)
