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Air and Fuel› Fuel Pumps, Regulators and Components

Holley

Electric Fuel Pump 68-72 Chevelle In-Tank

$592.95 $559.52 Save $33.43

SKU: H00E 12-303

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Holley 12-303 is an in-tank fuel pump module that flows 255 LPH and supports EFI engines up to 550 horsepower. It includes a pre-calibrated fuel-level sending unit and a HydraMat filter. The fuel pressure is internally regulated to 58 psi, eliminating the need for an external fuel pressure regulator or separate return line. It is designed as a direct replacement for factory pick-up and sending units.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolley
Part NumberH00E 12-303
Weight1.95 lb

Videos

How To Install Holley's 255 LPH OEM Style EFI Fuel Tank Module

How To Install Holley's 255 LPH OEM Style EFI Fuel Tank Module
Holley 255 LPH OEM Style EFI Fuel Tank Modules

Holley 255 LPH OEM Style EFI Fuel Tank Modules
Holley In-tank Retrofit Fuel Modules

Holley In-tank Retrofit Fuel Modules
Add a High-Pressure, In-Tank Fuel Pump To Your Stock Gas Tank With Holley Retro-Fit Fuel Modules

Add a High-Pressure, In-Tank Fuel Pump To Your Stock Gas Tank With Holley Retro-Fit Fuel Modules
Choosing the Perfect Replacement Fuel Tank: Stock vs EFI Ready

Choosing the Perfect Replacement Fuel Tank: Stock vs EFI Ready
Holley In Tank Retrofit Fuel Pump Install!

Holley In Tank Retrofit Fuel Pump Install!
Holley EFI gas tank and pump install ***CHEVELLE***

Holley EFI gas tank and pump install ***CHEVELLE***
Holley In Tank Retrofit Kit

Holley In Tank Retrofit Kit
How To Install Mustang 255 LPH OE Style EFI Holley Fuel Tank Modules

How To Install Mustang 255 LPH OE Style EFI Holley Fuel Tank Modules

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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