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Holley Diecast In-Tank Retrofit Fuel Pump Modules 12-129 Pumps, Electric, In-Tank, Module, 6 psi, 255 lph, Gasoline, Non-Return Style, Each

SKU: HLY12-129

Fuel Pumps

Holley Diecast In-Tank Retrofit Fuel Pump Modules 12-129 Pumps, Electric, In-Tank, Module, 6 psi, 255 lph, Gasoline, Non-Return Style, Each

SKU: HLY12-129

Fuel Pumps
A$993.49
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

Holley diecast in-tank retrofit fuel pump modules are quick and easy ways to convert your factory tank or fuel cell into an EFI in-tank fuel system, while also adding the benefits of a Holley HydraMat in the process! The conversion is easily accomplished with basic tools and requires no welding or fabrication. The aluminum module design includes a diecast pump hanger bracket to control pump vibration, while also providing a low-profile design to fit where space is at a premium. Holley's innovative clamping system and integrated fuel pump makes it a simple install. Interested in an EFI retrofit kit, but can't get past the complicated fuel system? Holley diecast in-tank retrofit fuel pump modules are your solution. They're available in various flow rates, as well as return and returnless versions.

Features include:

* Installs in any fuel tank from 6.5 in. to 12 in. deep (depending on kit) to fit a wide variety of applications
* The low-profile design is only 1.275 in. above the tank mounting surface for added clearance when needed
* The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit
* The clamping system allows you to rotate the unit 360 degrees for easier clocking of the plumbing and wiring locations under your ride
* Includes innovative Holley HydraMat to ensure consistent fuel supply. The 3 in. x 15 in. HydraMat mounting flange has six clocking pin locations to allow for 360 degrees of adjustment to clear sending unit levels or any tank floor restrictions that you might encounter
* Diecast aluminum construction for corrosion resistance and long-lasting good looks
* 1/4 in. NPT ports for a wide variety of plumbing options
* Ideal for Terminator EFI, Sniper EFI, MSD Atomic EFI, or any TBI or EFI conversion
* Two different fuel pumps are available—255 lph or 400 lph for both return and returnless-style systems

Part Type

In-Tank Retrofit Fuel Pump Module 255LHP

Data: v4.2 - Upd: 2026-10-17 03:06:47

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
12-129
Product Attributes - Part Type
Fuel Pumps
Product Attributes - Product Line
Holley Diecast In-Tank Retrofit Fuel Pump Modules
Product Attributes - UPC
090127061282
Product Attributes - Fuel Pump Type
Electric In-tank
Product Attributes - Flow Rate
67 gph/255 lph
Product Attributes - Fuel Pressure (psi)
6 psi
Product Attributes - Fuel Pump Voltage
12 V
Product Attributes - Fuel Pressure Regulator Included
No
Product Attributes - Sending Unit Included
No
Product Attributes - Fuel Pump Inlet Size
1/4 in. NPT
Product Attributes - Inlet Quantity
1
Product Attributes - Inlet Attachment
Female threads
Product Attributes - Fuel Pump Outlet Size
1/4 in. NPT
Product Attributes - Outlet Quantity
1
Product Attributes - Outlet Attachment
Female threads
Product Attributes - Gasket Included
No
Product Attributes - Wiring Harness Included
No
Product Attributes - Mounting Bracket Included
No
Product Attributes - Mounting Hardware Included
No
Product Attributes - Pulley Included
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Works on a 6.500 in. to 12.000 in. deep tank. Designed for use with a non-return style system. Supports 700 carbureted HP.

Reference Information

Brand Name/s Holley
StreetFX SKU hly12-129
SFX Item ID 4784191
Supplier Item Code 4784191
Manufacturer SKU 12-129
Manufacturer UPC 90127061282
Alternative References HOL12-129

Compatibility

Application Data
  • UniversalYes
    Fuel TypeGAS
    Application NotesWorks on a 6.500 in. to 12.000 in. deep tank. Designed for use with a non-return style system. Supports 700 carbureted HP.

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