K20 K20Z1 Thermostat Housing Billet Cover K Series K Swap EG EK DC2 Civic Si CRX Best Sellers Designed for high-heat

Designed for high-heat

no cutting or ECU retune required

Hand-modified for the best light output and RGB clarity

The short-tip design provides a more compact visual profile while still finishing the rear of the vehicle with a 4

2003-2005 with 3 plug ECU ONLY

K20 K20Z1 Thermostat Housing Billet Cover K Series K Swap EG EK DC2 Civic Si CRX Best Sellers Designed for high-heatApplication: Fits all K series engines Fits both K20 & K24 engines Welded 1. 25" Hose or 16AN Fitting Available. The Billet Thermostat Cover securely attaches to the OEM plastic housing by utilizing the original shoulder bolts, OEM thermostat, and OEM gasket. This compatibility extends to the K20A, K20A2, K20Z1, and any other K variants sharing the same housing. It was best retain the original thermostat within the cover was deliberate, as I believe