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Air and Fuel› Superchargers, Turbochargers and Components

ProCharger

F-1A-91 Supercharger Head Unit

Name: F-1A-91 Supercharger Head Unit
Brand: ProCharger
SKU: PC335A-001-A

$4,678.31

SKU: PC335A-001-A

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Overview

The ProCharger F-1A-91 is a self-contained centrifugal supercharger head unit designed for serious performance enthusiasts. It supports up to 1,200 supercharged horsepower and delivers 1,600 CFM of airflow, making it suitable for naturally aspirated engines producing 300-500 horsepower. This supercharger can generate up to 38 PSI of boost and is built for demanding street, drag racing, marine, and custom high-performance applications.

Featuring a compact 9-inch volute, the F-1A-91 includes a self-contained lubrication system, eliminating the need for external oil lines. It has a 5.40:1 internal step-up ratio and a maximum impeller speed of 74,000 RPM. This listing is for the head unit only; mounting brackets, pulleys, belts, intercoolers, and other necessary components are sold separately.

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The ProCharger F-1A-91 supercharger head unit is a self-contained, high-performance centrifugal supercharger engineered for both modified street engines and hardcore racing applications. It utilizes a custom 7075 billet aluminum impeller, a CNC-machined transmission case, and a patented compound bearing design to provide reliable, high-boost performance. The unit is capable of supporting up to 1,200 horsepower with a maximum airflow rating of 1,600 cfm and can handle up to 38 psi of boost. This is a head-unit-only component; the pulley is not included with the purchase. The unit features an internal 5.40:1 step-up ratio and a 3.75-inch inlet diameter with a 3.0-inch outlet. It is designed for self-contained oiling with a 4 oz oil capacity. Please note that this is a specialized performance component. Because this is a head-unit-only product, users must ensure compatibility with their specific mounting bracket systems and pulley setups. It is not a universal-fit part for all vehicles, and fitment will depend on the custom application requirements of your build.

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	ProCharger
Part Number	PC335A-001-A
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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