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Holley Accelerator Pump Conversion Kit 20-11

Holley Accelerator Pump Conversion Kit 20-11
Holley Accelerator Pump Conversion Kit 20-11
$108.99 ea
NEWBackordered until 04/13/2023
Model: 3991939
Supplier has not provided any fitment data for this product.
[More Info]
Includes new pump housing, stud, arm, diaphragm, spring, longer pump housing screws.
  • 50cc Conversion Kit
  • New Pump Housing
  • Stud Arm Diaphragm Spring
  • Longer Pump Housing Screws
  • Instantaneous Response
  • Pull Strong Thru-Out RPM Band
  • Increases Fuel Capacity
  • Eliminates Flat Spots
Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
Installation Notes:
includes everything required for easy installation

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



Color Zinc
Emission Code 5
Material Zinc
Part Type Carburetor Accelerator Pump Conversion Kit
Size 50 cc


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Holley Accelerator Pump Conversion Kit 20-11:
Classic Nova 2023