Clutch Masters K721-EAP Engine Adapter Plate for Honda K20/K24 to Subaru STI 6-S

Vehicle Fitment

• Honda K20/K24 Engines
• Subaru STI 6-Speed Transmission (EJ Series)

Fitment Notes

• Designed for custom engine swaps utilizing Honda K-series engines and Subaru STI 6-speed transmissions.
• Utilizes the factory Honda starter; includes a cover plate to seal the starter hole on the Subaru transmission.
• Maintains the factory 11-degree tilt of the Honda K-series engine to the passenger side.
• Compatible with Clutch Masters FW-K721-SF single-disc flywheel or other OE-style Subaru STI 6-speed clutch kits.
• Installation requires professional expertise; modifications may be necessary.

Features

• Precision-machined 1-inch thick adapter plate for seamless mating of Honda K-series engines to Subaru STI 6-speed transmissions.
• Allows the use of a rear-wheel drive K-series wiring harness without extensive modifications.
• Includes all necessary hardware for secure and straightforward installation.
• Designed to withstand high-performance driving conditions.
• Manufactured in the USA with high-quality materials and craftsmanship.

Specifications

• Material: High-strength aluminum alloy
• Thickness: 1 inch
• Engine Compatibility: Honda K20/K24
• Transmission Compatibility: Subaru STI 6-Speed (EJ Series)
• Starter Compatibility: Factory Honda starter
• Emissions: Non-Emissions Compliant (Track Use Only)

Included Components

• 1x Clutch Masters K721-EAP Engine Adapter Plate
• All necessary mounting hardware
• 1x Starter cover plate

Product Description

The Clutch Masters K721-EAP Engine Adapter Plate is engineered for enthusiasts and racers looking to swap a Honda K20 or K24 engine into a Subaru STI platform equipped with a 6-speed transmission. This precision-machined adapter plate measures 1 inch in thickness and allows for a seamless connection between the K-series engine and the Subaru STI transmission.

Designed to maintain the factory 11-degree tilt of the Honda K-series engine, the adapter plate ensures proper alignment and drivetrain geometry. It utilizes the factory Honda starter and includes a cover plate to seal the starter hole on the Subaru transmission, facilitating the use of a rear-wheel drive K-series wiring harness without extensive modifications.

The K721-EAP adapter plate is compatible with Clutch Masters FW-K721-SF single-disc flywheel or other OE-style Subaru STI 6-speed clutch kits, providing flexibility in clutch selection. All necessary hardware for secure installation is included, making this kit a comprehensive solution for custom engine swaps.

Manufactured in the USA with high-quality materials and craftsmanship, the Clutch Masters K721-EAP Engine Adapter Plate is built to withstand high-performance driving conditions. Whether you're building a custom race car or a high-performance street machine, this adapter plate offers the reliability and performance needed to complete your engine swap project.