Seller notes

Fits 12-840 Fuel Pressure Regulators; Regulator Rebuild Kit for 12-840 Billet Regulator. Includes complete diaphragm, spring and rebuild instructions.; Menu About Us Feedback View All Listings Warranty Shipping Holley 12-822 Regulator Rebuild Kit Click to enlarge Part Number: Product Description Fits 12-840 Fuel Pressure Regulators; Regulator Rebuild Kit for 12-840 Billet Regulator. Includes complete diaphragm, spring and rebuild instructions.; Fuel Pressure regulator rebuild kit for Holley 12-8...

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