Engine Harnesses

Explore VTI Motorsports Honda engine harnesses built in-house in Vermont. Choose your ECU platform first, then confirm engine fitment, chassis connections and connector options on the product page.

Choose the Honda H/B-series OBD1 harness for P28 / Hondata S300 for stock Honda engine-management logic, or the Link G4X CivicLink HC96X harness for Honda OBD2A for a Link-specific installation.

Shop VTI chassis subharnesses for separate swap interfaces, or request a custom harness for another configuration.

2 products

Confirm Compatibility

Use the collection title, product application details, and vehicle or ECU options to narrow the correct wiring solution. If your chassis, engine, ECU, or swap combination is not clearly listed, contact VTI before ordering.

VTI-Built vs Partner Products

Products manufactured by VTI Motorsports are identified in their individual listings. Partner and vendor products remain available where they support a complete wiring or ECU installation.

Custom Configurations

For combinations outside the production catalog, submit a custom harness request with the chassis, engine, ECU, trigger system, injector type, and required sensors or auxiliary functions.