K-series Coolant Tube Block Plug - Raw Compatible w/ K20 and K24 Thermostat Bodies

This Circuit Hero product helps eliminate unnecessary parts for a K-series race engine build. This billet coolant plug eliminates the coolant pipe that leads to the OEM K-series thermostat housing. Features CNC 1-piece Premium 6061 aluminum Easy Installation (does require the drilling of a small hole through thermostat housing for Allen screw) Re-use or replace factory rubber o-ring from OEM coolant tube Use in conjunction with OEM Honda Hex Plug P/N# 12208-PR3-000 & Crush Washer P/N 12209-PR3-000 Compatible with K20 and K24 thermostat bodies