Holley Mechanical Fuel Pump Diaphragm Assembly (Low Pressure)

Replacement mechanical fuel pump diaphragm and spring assembly for 12-327-30, 12-454-30, 12-454-40 and 12-289-30 fuel pumps.

Holley 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 products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!

Mechanical Fuel Pump

For 12-327-30/12-454-30/12-454-40/12-289-30 Fuel Pumps

Product Description:

Fuel Pump Diaphragm

Gas

Holley Mechanical Fuel Pumps

Sold Individually

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.