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Holley Mechanical Fuel Pump Diaphragm Assembly (Low Pressure) 12-755

Holley Mechanical Fuel Pump Diaphragm Assembly (Low Pressure) 12-755
$93.99 ea
NEWARRIVING SOONEstimated Ship Date 07/02/2024 (If Ordered Today)15 Available from HOLLEY PERFORMANCE PRODUCTS as of 06/12/2024
Model: 3991270
Replacement mechanical fuel pump diaphragm and spring assembly for 12-327-30, 12-454-30, 12-454-40 and 12-289-30 fuel pumps.
  • Complete diaphragm assembly for -30 and -40 Ultra HP fuel pumps

About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy 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!


Download Name File Size


Component Type Diaphram Kit
Emission Code 5
Part Type Mechanical Fuel Pump
Product Type Fuel Pump Component
Warranty Limited 90 Day


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Holley Mechanical Fuel Pump Diaphragm Assembly (Low Pressure) 12-755:
Classic Nova 2024