Holley Secondary Accelerator Pump Diaphragm Spring Kits H778001XL Includes a rubber padded mounting

Includes a rubber padded mounting bracket and two heavy duty hose clamps

longevity is decreasing

and additives in dynamic packages - products designed for the complete maintenance and enhanced performance of heavy-duty equipment

reducing weight while providing maximum travel with a linear rate

Braided Fiberglass

Holley Secondary Accelerator Pump Diaphragm Spring Kits H778001XL Includes a rubber padded mountingSecondary Throttle Operating Ranges Color: White Relative Load: Lightest Color: Yellow Relative Load: Lighter Color: Purple Relative Load: Medium Light Color: Plain Relative Load: Medium Color: Brown Relative Load: Heavy Color: Black Relative Load: HeavyHolley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI