What is the primary benefit of this throttle body?

The primary benefit is increased airflow, which translates directly to more horsepower for your engine. Its design features like tapered bores and inward-opening blades are optimized for performance.

What does '4500 Flange' mean for my application?

The 4500 flange is a specific mounting pattern common on high-performance carburetors and throttle bodies. You'll need to ensure your intake manifold or adapter plate is compatible with this size and bolt pattern.

Is this throttle body compatible with all EFI systems?

This throttle body is designed for multi-port injection EFI systems. It's important to verify that your specific EFI system and intake manifold use a 4500 flange for proper fitment.

FAST 4500 Series Throttle Body 2000 CFM 4 Barrel

Name: FAST Throttle Body Polish 4500 W/Ia
Brand: FAST
SKU: fast-fast-throttle-body-polish-4500-w-ia-t14-4388330
Price: 1204.44 USD
Availability: BackOrder

FAST Throttle Body Polish 4500 W/Ia

$1204.44

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

FAST 4500 Series 4 Barrel Throttle Body for EFI systems. Polished finish, 2000 CFM flow. Part# 307604P. Not CARB approved.

Key Features

Fits 4500 flange applications for multi-port injection EFI systems.
Polished finish for a clean appearance.
Tapered and radiused throttle bores for smooth airflow.
Precisely machined progressive linkage for controlled throttle response.
Inward opening throttle blades increase performance.
Shorter height allows for easier packaging and better hood clearance.

This throttle body is designed for 4500 flange applications and multi-port injection EFI systems. Not CARB approved; cannot ship to California.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This is the FAST 4500 Series 4 Barrel Throttle Body, designed for multi-port injection EFI systems. It's built to increase airflow, which directly translates to more horsepower for your engine. The 4500 flange and polished finish give it a clean look while the internal design focuses on performance.

What sets this throttle body apart is its construction and design aimed at maximizing airflow. It features tapered and radiused throttle bores, along with precisely machined progressive linkage, ensuring smooth throttle operation. The inward-opening throttle blades are a notable design choice that further boosts performance. Its shorter height is beneficial for easier packaging in tight engine bays, offering better hood clearance and reducing overall weight. This unit flows an impressive 2,000 CFM, supporting significant performance gains.

Keep in mind that this throttle body is not CARB approved and cannot be shipped to California. It's a solid option if you're looking to upgrade your EFI system for improved engine output and are working within a system that doesn't require CARB compliance.