DC SPORTS 3"-2.5" SILICONE REDUCING COUPLER 2001-2005-Honda-Civic-Si so European customers using the

so European customers using the UKDM K20A/K20A2 wiring harness will need to convert the harness to use the narrowband type sensor

We recommend using a 12" slim fan on half-size radiators (EG CIVICS USE 10-INCH FAN) and (2) 10" fans on the full-size radiators

coolant and high heat leading to premature failure by cracking

The proven formula contains special surfactants and lubrication agents that allow quick and easy cleaning without scratching or ruining the finish of vehicle components

These aren't required but are recommended

DC SPORTS 3"-2.5" SILICONE REDUCING COUPLER 2001-2005-Honda-Civic-Si so European customers using theDC Sports Silicone Couplers are made from a multi ply, temperature resistant polyester compound. Proven to work in the most extreme engine environments.