Gorilla Spares replacement electronic boards for EHST pressure control valves for all models;  11, 30 and 40 design. These boards are 100% interchangeable with all EHST models for a perfect fit and function while providing performance that meets or exceeds OEM brand boards.

Wiring diagrams and connection information is available here (EHST Connection Information).

• Each board includes a jumper kit and new transistor.
• Direct Upgrade for 11 and 30 design boards (click here for upgrade & installation information)
• In stock in the USA and ready to ship.
• One year performance guarantee.
• Fully interchangeable with all 11,30 and 40 design EHST boards.