Made in USA
12-158 In-Tank RetroFit Fuel Module, EFI Applications
InfoVehicle Info Needed
HOLLEYPART NUMBER: 510-12-158

12-158 In-Tank RetroFit Fuel Module, EFI Applications

$84995
ShippingShips on Sep 04, 2026
Lowest PriceLowest Price Guarantee

255 lph Pumps
In-Tank RetroFit Fuel Module
  • 255 lph Pump
  • Supports up to 550 EFI HP
  • 4.800 in. Diameter
  • 1/4 in. npt Ports
  • Die-Cast Aluminum Module
  • Returnless-Style Fuel System
  • Includes Hydramat

    Installation Notes:

    • A 30 amp fuel pump relay and minimum 12 gauge wire are recommended for optimal performance
    • -6 AN lines and fittings are the maximum size recommended for operation due to space limitations between the fuel sending unit and fuel tank
    • Drop-In Retrofit EFI Fuel System

      Are you interested in an EFI retrofit kit, but just can't get past the complexity of the fuel system? Holley's Universal In-Tank Retrofit Fuel Modules are available in return and returnless versions to quickly and easily convert your factory tank or fuel cell to an in-tank EFI fuel system using only basic tools; no welding or metal fabrication is necessary. Each low-profile aluminum module includes a pump hanger bracket to control pump vibration along with an innovative clamping system that allows it to be positioned in the tank near the existing sending unit. Once installed, simply hook-up the fuel lines, power source, and ground; then you're ready to run!

    Part TypeFuel Pump Module Assembly
    Product LineHolley In-Tank RetroFit EFI Fuel Modules
    BrandHOLLEY
    Package Height6.0
    Package Width6.0
    Package Length18.25
    Weight5.0 PG
    Part CategoryPerformance Parts
    Strainer LocationExternal
    Outlet Size1/4NPT
    Rollover Valve IncludedNo
    Number Of Ports On Cover3
    Part FitmentSemi Universal
    Free Flow Rate255 lph
    Strainer IncludedYes
    Fuel TypeGasoline
    Vendor Part Number12-158
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

    Items You Need

    Single Fuel Pump Harness and Relay Kit 30 Amp

    JEGS

    Single Fuel Pump Harness and Relay Kit 30 Amp

    Part Number : 555-10564
    $3199$34.49
    You Save$2.50
    Sure Grip Cut & Pull Wire Stripper

    JEGS

    Sure Grip Cut & Pull Wire Stripper

    Part Number : 555-80573
    $1999$21.99
    You Save$2.00
    Wire Crimping Pliers and Stripping Tool

    JEGS

    Wire Crimping Pliers and Stripping Tool

    Part Number : 555-80575
    $1399$15.99
    You Save$2.00
    162-554 HP Billet Fuel Filter -8 AN

    HOLLEY

    162-554 HP Billet Fuel Filter -8 AN

    Part Number : 510-162-554
    $14495

    ITEM YOU MAY ALSO CONSIDER

    12-131 In-Tank RetroFit Fuel Module

    HOLLEY

    12-131 In-Tank RetroFit Fuel Module

    Part Number : 510-12-131
    $84995
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning
    Your Cart

    Your shopping cart is empty!