TracTuff K Series Billet Thermostat Cover

TracTuff K Series Billet Thermostat Cover


No cool features, no weaknesses, no bullshit! What you see is a simple Billet Thermostat Cover that bolts to the OEM plastic housing, uses the OEM shoulder bolts, the OEM thermostat, and OEM gasket. I chose the original thermostat because it is unique to this engines configuration and is related to many of customers number once concern. You wont find any sensor ports because they don't belong here and you wont find a swivel because it doesn't work for everyone anyway. What you do get is, a straight forward, refreshing design that allows the end-user to chose whichever fitting he/ she needs to plumb the lower hose.

Machined from US milled 6061 aluminum, the flange incorporates an OEM o-ring grove while the front is threaded for -16 ORB. The Billet Thermostat Cover uniquely receives the k20a/ k20a2/ K20a3/ k20z1 thermostat for the most reliable function and retains the quick warm up feature of the water bypass circuit.  

NOTE: If you are interested in having a portion of tube welded to the cover for standard hose, please email me at An AN style lower radiator hose should be configured so that there is droop/ give so the engines movement does not push/ pull on the radiator and/ or fatigue any parts. The TracTuff K Series Billet Thermostat Cover is designed to be a direct replacement for the 2002-2006 Acura RSX or 2002-2005 Civic Si thermostat. In order to run this product, you MUST use the 2002-2006 Acura RSX or 2002-2005 Civic Si thermostat case (back-half) that bolts to the water pump housing (P/N 19320-PNA-003); the water pump housing side has a common bolt pattern but the thermostat cover side does not. I strongly suggest measuring the space you have BEFORE ordering! The design may not work for everyone. Measurements with recommended fittings can be found below. 

With 1.25" Hose Fitting (-16 Male Flare is 11/32" (.344") and -16 Wiggins is 9/16"(.563") are Shorter)

With 90° -16 Male Flare - Low Profile

90° -16 Male Flare - Ultra Low Profile