Boomba Racing STI 75mm DBW Throttle Body (Bolt On) - Natural Aluminum - 2004-2021 Subaru STI

Boomba Racing STI 75mm DBW Throttle Body (Bolt On) - Natural Aluminum - 2004-2021 Subaru STI

Features:

• Direct replacement for factory throttle body

• Fits 2004.5–2014 STI drive-by-wire models

• Requires use of stock TPS cover and servo motor

• Includes adaptors and all mounting hardware

• CNC-machined billet aluminum construction

• Available in multiple anodized finishes

• 56% increase in throttle cross-sectional area

• Gains in throttle response and horsepower potential

Compatibility and Design

The WRX / STI 75 MM Drive-By-Wire Throttle Body is a direct factory replacement, specifically designed to work only with the stock TPS cover and servo motor from the original bolt-on unit. It is compatible with 2004.5–2014 STI models equipped with a drive-by-wire throttle body. This unit ensures hassle-free installation while maintaining proper functionality through the reuse of OEM electronic components.

Kit Features and Performance Benefits

Each 75 MM throttle body kit includes a stock manifold adaptor plate, a 60 MM hose adaptor for use with factory intake piping, a 75 MM hose adaptor, and all necessary mounting hardware. Precision CNC-machined from billet aluminum, these throttle bodies are available in natural aluminum, red, blue, and black anodized finishes. The larger 75 MM diameter delivers nearly a 56% increase in cross-sectional area over the stock throttle body, resulting in improved throttle response and a modest horsepower gain even on stock setups. When paired with larger 75 MM intake piping, this upgrade unlocks significant performance potential, while maintaining Boomba’s high-quality standards and warranty backing.

This Throttle Body will only accept stock TPS cover and servo motor from factory BOLT ON unit.

Please call Boomba Racing at 630-694-0404 BEFORE placing order to ensure proper fitment.

Boomba Racing is NOT responsible for additional shipping costs if incompatible parts are ordered.

Also compatible with 2015 + STi

[Installation Manual]

Product Color Disclaimer
Due to variances in the anodizing stage of production that are beyond our control, actual color hue may be different than what is pictured and what has also been previously offered by Boomba Racing. We apologize for any inconvenience and we sincerely appreciate your understanding. For further clarification, feel free to contact us.