Home / Engine / Preferred TH9 thermostat “Kat’s K4B frost plug engine heater” has been added to your cart. View cart Preferred TH9 thermostat$2.50 1 in stock Preferred TH9 thermostat quantity Add to cart SKU: SKU ENG-MB-008 Category: Engine Description Preferred TH9 thermostat – SKU ENG-MB-008 New Old Stock Preferred TH9 195-degree thermostat – pulled from the inventory of Merchand Brothers, long-time independent mechanics in White River Junction, Vt. Related products Honda 11251-P30-004 oil pan gasket $25.00 Add to cart Subaru 28015AA100 oil seal $5.00 Add to cart Bosch 437502015 injector $25.00 Add to cart Repco 151-2000 external fuel pump $25.00 Add to cart