K Series K20 K24 In Line Thermostat Housing W/ T-Stat For Acura Honda RSX Civic K Series K20 K24 In Line Thermostat Housing W/ T-Stat For Acura Honda RSX Civic YX03805 In Line Thermostat Housing w/ T-Stat Applications: All K-series engines, Universal (fits any 1.25' rad hose) This part is most often used in conjunction with our Water Pump Block Off Plate kit. Installation of the Water Plate kit the factory T-stat housing so if you need or want to have a T-stat in your cooling system you'll need to use this part for sure. This billet thermostat housing is designed to splice the thermostat into the lower hose of your K-series cooling system. Fits standard 1.25' rad hoses and comes complete with a new 180 deg Stant T-stat. Machined billet aluminum finish only. _x000D_