halftrackinfo
drive train => cooling system => Topic started by: steve-0 on November 25, 2010, 12:15:34 PM
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the napa part number for the thermostat for the halftrack. the measurements posted on there site match perfectly.
napa Number = THM 358-170
GATES 33397
GATES 5797
DAYCO 83714
NAPA 33397
GM 12302886
GM 5124872
rockauto has them for about $24
http://www.rockauto.com/catalog/moreinfo.php?pk=100568&jnid=298&jpid=2
or even wallmart but they are out of stock
http://www.walmart.com/ip/Gates-33397-Thermostat/42684248
other cross over numbers. i bought a bunch on ebay for about $10 each
http://www.yoyopart.com/oem/12156384/napa-358170.html#interchange
http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Thermostat-Heavy-Duty/_/R-THM358170_0183566923
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a halftrack thermostat is never closed. the thermostat does not block the flow as most modern engines are setup, the halftrack thermostat has a sleeve that slides in another part of the housing supplying the pump with water circulated through the engine or when it is warmed up through the radiator. using a modern thermostat would block flow when cold (which is ok) but when warmed up instead of being directed through the radiator it would both recirculate through the engine and go through the radiator which may cause overheating problems. a modern engine is one way in and one way out through the thermostat. a halftrack engine is one way in and two ways out.