Main Relay Conversion kit 39400-SH3-003 RZ-0063 for Honda | 88-91 Civic/CRX
RZ-0063 Main Relay Conversion Kit, Replacement for Honda Civic/CRX 1988-1991,
Improved Fuel Efficiency: A properly functioning main relay is essential for good engine performance. By converting to a standard relay switch, you can enhance the efficiency of your vehicle’s fuel system.