Killer B Motorsports 3″ Cast Turbo Inlet to 84mm Adapter Coupler 2002-2007 WRX / 2004-2021 STI Fan Favorite

Description

Killer B Motorsports 3″ Cast Turbo Inlet to 84mm Adapter Coupler 2002-2007 WRX / 2004-2021 STI | Turbo Upgrade Compatibility | Performance Part

Overview

The Killer B Motorsports 3″ to 84mm adapter coupler is a precision-engineered component designed specifically for Subaru WRX and WRX STI owners looking to upgrade their turbo systems. This high-quality adapter facilitates a seamless connection between a 3″ Killer B Extreme Flow HARD Turbo Inlet and an 84mm turbo front cover, enabling enthusiasts to maximize airflow and boost response. Whether you’re building a high-horsepower setup or refining your existing forced induction system, this adapter ensures a reliable and efficient transition that supports optimal turbo performance.

Built with a focus on durability and precise fitment, Killer B Motorsports leverages their extensive experience in Subaru performance parts to deliver products that meet the demands of serious tuners. Crafted from robust materials and CNC-machined for accuracy, this coupler maintains consistent airflow and minimizes turbulence, which is critical for tuning and power gains. Its design supports larger turbochargers, making it an ideal upgrade for those seeking increased power potential while retaining their existing inlet hardware.

For Subaru owners committed to tuning and performance, this adapter offers a straightforward upgrade path that enhances boost efficiency and turbo responsiveness. Its compatibility with a broad range of models from 2002-2007 WRX and 2004-2021 STI ensures a versatile fitment, making it a valuable addition to any turbocharged Subaru build. By choosing this adapter, you’re investing in a component that supports your goals of increased power, reliability, and consistent performance on the street or track.

Features & Specifications

This Killer B Motorsports adapter is engineered for Subaru WRX and STI platforms, featuring a 3″ inlet connection to a 84mm turbo front cover. Constructed from high-grade materials, it delivers durability and precise fitment for demanding tuning applications.

• Brand: Killer B Motorsports
• Product: Cast Turbo Inlet to 84mm Adapter Coupler
• Part Number: Not specified
• Fitment: 2002-2007 Subaru WRX / 2004-2021 Subaru WRX STI
• Material: Cast aluminum
• Finish: Natural cast finish
• Construction: CNC-machined for precision
• Origin: Made in the USA

• Power Gains: Supports larger turbochargers for increased airflow and boost potential
• Tuning Required: Recommended for optimal performance and safety
• Compatibility: Supports 2002-2007 WRX and 2004-2021 STI models with 84mm turbo front covers

Key Benefits

• Enhanced Airflow: Facilitates a smooth transition between inlet and turbo, improving boost response and power delivery.
• Reliable Fitment: CNC-machined for precise dimensions, ensuring a secure and leak-free connection.
• Durability: Cast aluminum construction withstands high boost pressures and demanding conditions.
• Upgrade Flexibility: Supports larger turbo upgrades while maintaining existing inlet hardware.
• Community Proven: Designed by Killer B Motorsports, a trusted name among Subaru enthusiasts and tuners.

What’s Included

• 1× Killer B Motorsports Cast Turbo Inlet to 84mm Adapter Coupler
• Installation instructions

Installation & Compatibility

This adapter is designed for straightforward installation on compatible Subaru WRX and STI models. It is a bolt-on component that requires basic hand tools and minimal modification, making it suitable for DIY enthusiasts with some mechanical experience. For optimal results, ensure your turbo inlet and front cover are clean and free of debris before installation. Tuning is highly recommended after upgrading to larger turbos or modifying airflow paths to maximize performance and reliability.

• Professional Installation: Recommended for best results, especially when upgrading turbo components.
• Modifications Required: None for standard fitment; verify compatibility with your specific turbo setup.
• Verify Compatibility: Confirm your vehicle’s model year and turbo specifications before purchase.