Air and Fuel› Intake Manifolds and Components

FAST

FAST Throttle BodyPolish4150W

$970.95

SKU: F003 307603P

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The FAST 307603P is a polished 4150 flange air-only throttle body designed for multiport injection EFI systems. It is machined from super-strong 6061-T6 billet aluminum using precision CNC machinery. It features tapered and radiused throttle bores and precisely machined progressive linkage for smooth throttle operation and unparalleled airflow. This throttle body includes a Throttle Position Sensor (TPS) and an Idle Air Control (IAC) sensor. Inward opening throttle blades eliminate part throttle directional influence that can cause poor air distribution. It has a shorter height for better airflow, easier packaging for tight hood clearance, and reduced weight. It is designed to maximize airflow for high-performance applications.

Fitment

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Specifications

BrandFAST
Part NumberF003 307603P

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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