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Air and Fuel› Intake Manifolds and Components

Holley

Sniper 2 EFI Self-Tuning Master Kit

Name: Sniper 2 EFI Self-Tuning Master Kit
Brand: Holley
SKU: 9C973-4HSAK

$1,798.33

SKU: 9C973-4HSAK

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Holley Sniper 2 EFI Self-Tuning Master Kit is a black ceramic finish EFI conversion system designed for common 4-barrel (4150 flange) style carburetors. It offers self-tuning capabilities for easy installation and operation.

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The Holley Sniper 2 EFI Self-Tuning Master Kit provides an easy-to-install electronic fuel injection (EFI) conversion for vehicles originally equipped with common 4-barrel carburetors featuring a 4150 flange. This master kit includes all necessary components for a comprehensive EFI upgrade. Featuring a self-tuning capability, the Sniper 2 system simplifies the process of migrating from carburetion to EFI, offering improved drivability, cold start performance, and overall engine efficiency without the need for extensive manual tuning. The kit is finished in a durable black ceramic coating for a sleek appearance and enhanced longevity. Designed to be a direct replacement for 4150 flange carburetors, this EFI system integrates new electronics with a user-friendly interface. It aims to deliver the benefits of modern fuel injection while maintaining a straightforward installation process for classic vehicle applications.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Holley
Part Number	9C973-4HSAK
Category	Air and Fuel

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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