The Holley Sniper EFI In-Tank Fuel Pump 12-309 is an OE-style, returnless fuel pump module designed for 1955–1957 Chevrolet coupes and sedans, including the iconic Tri-Five Chevrolet 150, 210 and Bel Air models.

Designed for classic Chevy owners upgrading to electronic fuel injection, this in-tank fuel pump module replaces the factory fuel pick-up and sending unit, providing a convenient starting point for an EFI or LS engine conversion without requiring a custom fuel tank.

Whether you're restoring a 1955 Bel Air, building a 1956 Chevy street machine or converting a 1957 Chevrolet to LS power, the Holley Sniper EFI 12-309 offers a vehicle-specific fuel system upgrade.

Holley Sniper EFI In-Tank Fuel Pump Features

• 1955–1957 Chevrolet Application: Designed for compatible Tri-Five Chevy coupes and sedans.
• OE-Style Replacement: Replaces the original fuel pick-up and sending unit assembly.
• Returnless Module Design: Designed for a compatible returnless EFI fuel system.
• EFI Conversion: Suitable for consideration when upgrading a classic Chevrolet from carburettor to electronic fuel injection.
• LS Swap Applications: A practical option when planning the fuel system for an LS-powered Tri-Five Chevy.
• Original Tank Installation: Designed to avoid the need for a custom fuel tank in compatible applications.
• Holley Sniper EFI Range: Manufactured for classic vehicle EFI conversion applications.

Product Specifications

Brand: Holley

Product Range: Sniper EFI

Product: In-Tank Fuel Pump Module

Part Number: 12-309

Vehicle Application: 1955–1957 Chevrolet Coupes and Sedans

Compatible Model Range: Chevrolet 150, 210 and Bel Air

Fuel System Type: Electronic Fuel Injection

Module Design: OE-Style, Returnless

Installation Location: Fuel Tank

Replaces: Factory Fuel Pick-Up and Sending Unit Assembly

Intended Use: EFI Conversions and Compatible LS Engine Swaps

Category: Fuel Tank & Accessories

Price: NZD $1,580.00

Fuel pressure, pump flow rate, sender resistance, fuel outlet dimensions and included installation hardware should be confirmed against Holley's current instructions before purchase.

Holley In-Tank Fuel Pump for 1955–1957 Chevrolet

The Holley Sniper EFI In-Tank Fuel Pump 12-309 is designed to simplify the fuel system upgrade process on compatible Tri-Five Chevrolet models.

Traditional carburettor fuel systems operate differently from electronic fuel injection systems, which require a suitable high-pressure fuel supply.

When upgrading a classic Chevrolet to EFI, selecting a properly matched fuel pump and fuel delivery system is an important part of the conversion.

The Holley 12-309 replaces the factory pick-up and sender assembly, allowing builders to retain a compatible original-style tank rather than automatically replacing it with a custom EFI tank.

Ideal for LS Engine Conversions and EFI Upgrades

The Holley 12-309 is suitable for consideration in projects including:

• 1955 Chevrolet Bel Air EFI Conversions
• 1956 Chevrolet 150 and 210 Builds
• 1957 Chevrolet Bel Air Restorations
• Tri-Five Chevrolet LS Engine Swaps
• Classic Chevy Street Machines
• Custom Fuel Injection Installations

For LS conversions, the complete fuel system must be matched to the engine's fuel pressure, flow and regulation requirements.

Returnless EFI Fuel System Design

This module uses an OE-style returnless design, intended for a compatible EFI fuel system.

Depending on your engine management system and fuel delivery arrangement, additional components may be required, including fuel line, filtration, wiring and suitable pressure regulation.

Before installation, confirm compatibility with your fuel tank, fuel gauge, engine and fuel system layout.

Buy Holley Sniper EFI Fuel Pumps in New Zealand

Kruzin Kustoms supplies fuel system components, EFI conversion parts and specialist products for hot rods, muscle cars and classic American vehicles.

Based in Palmerston North, New Zealand, our workshop has over 20 years of experience building and modifying custom vehicles.

Order the Holley Sniper EFI In-Tank Fuel Pump 12-309 for your 1955–1957 Chevrolet online from Kruzin Kustoms for NZD $1,580.00.