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Edelbrock part #3855 is a GM-Style Stepper IAC adapter.

Additional Information

Edelbrock Idle Air Control Adapter Kit is required to install a GM-Style Stepper IAC Motor in place of an existing Hitachi PWM IAC. Allows for upgrade from ProFlo3 to ProFlo4.

Part Type

Idle Air Control Motor Connector

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

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Reference Information

Idle Air Control Valve Motor Adapter, O-Ring Style, GM-Style Stepper into Hitachi PWM, Pro-Flo 4 Adapter for use with Pro-Flo 3 Throttle Bodies, Kit

Edelbrock GM-style stepper idle air control adapter kits are required to install GM-style stepper idle air control (IAC) motors in place of an existing Hitachi PWM IAC. These adapters allow you to upgrade from Pro-Flo 3 to Pro-Flo 4 while utilizing your existing Pro-Flo 3 throttle bodies. The housings are designed to accommodate GM-style stepper IAC motors with O-ring seal only; not for use with threaded stepper IAC motors.