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12-139 Fuel Cell EFI Pump Module Assembly
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HOLLEYPART NUMBER: 510-12-139

12-139 Fuel Cell EFI Pump Module Assembly

$59995
ShippingShips on Sep 04, 2026
Lowest PriceLowest Price Guarantee

Single Pump Configurations
    Fuel Cell EFI Pump Module Assembly
  • 6-Bolt Mounting Flange
  • 255 LPH (67 GPH) Flow Rate
  • Rated for 550 EFI HP / 700 Carb HP
  • Single Pump
  • -8 AN Inlet
  • -10 AN Outlet
  • Gasoline Only

    Warning: 

    EFI rated fuel hoses and clamps are required when connecting this module to existing vehicles fuel lines. Failure to use proper plumbing equipment can lead to involuntary line disconnect which can result in fuel leaks, fire, personal injury or death. Always use extreme caution when handling fuel.

Holley makes updating your fuel cell system to EFI simple with their line of EFI pump modules. The modules are designed as a drop-in direct replacement for popular 6 and 12 bolt fuel cell flanges from many manufacturers. The billet top flange includes an -8 AN inlet port, a -10 AN outlet port, and a large fuel filler cap for quick and easy fill-ups. The pump on each module slides on a rail system and is adjustable from 7.5 in. to 12 in. deep for fitment into some of the most popular fuel cells on the market. Holley offers multiple fuel pump sizes configurations for applications from 550 horsepower to an extreme 4800 horsepower engines. Each module kit includes all hardware needed to install into an existing fuel cell.

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Features:

  • Fits popular fuel cells from brands such as JAZ, JEGS, & Speedmaster
  • Can be used in carbureted applications 
  • Designed to drop right into an existing 6-bolt or 12-bolt flange fuel cell
  • Billet top flange housing includes an -8 AN inlet, -10 AN outlet port, and a fuel filler port
  • Modules available with 255 and 450 LPH fuel pumps in single or dual pump configurations and with a 335 GPH dual brushless pump setup
  • The pump depth is adjustable for fitment in cell sizes 
Part TypeFuel Pump Module Assembly
Product LineHolley Fuel Cell EFI Pump Module Assemblies
BrandHOLLEY
Package Height8.6
Package Width8.7
Package Length15.8
Weight5.11 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number12-139
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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