{"title":"Buy Thermostats \u0026 Valves for Heavy-Duty Trucks","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThermostats and valves for heavy-duty diesel truck engines. Genuine OEM thermostats, thermostat housings, and coolant valves for Cummins ISB\/ISX, Detroit DD13\/DD15, Mack MP7\/MP8, Volvo D11\/D13, and Paccar MX-11\/MX-13 engines.\u003c\/p\u003e","products":[{"product_id":"23871486-genuine-mack-oil-thermostat-control-valve","title":"23871486 - Genuine Volvo\/Mack Thermostat, Control Valve - MP7\/D13","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Thermostat control valve designed to regulate coolant flow through the cooling system to help maintain proper engine operating temperature.\n  Proper temperature regulation supports efficient warm-up, stable performance, and helps prevent overheating under load.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack MP7\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo D13\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46541489602781,"sku":"WP20111","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20111.png?v=1779420176"},{"product_id":"23013323-genuine-mack-oil-thermostat-control-valve","title":"23013323 - Genuine Volvo\/Mack Thermostat, Control Valve - MP7\/D13","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Thermostat control valve designed to regulate coolant flow through the cooling system to help maintain proper engine operating temperature.\n  Proper temperature regulation supports efficient warm-up, stable performance, and helps prevent overheating under load.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack MP7\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo D13\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46541492748509,"sku":"WP20111","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20111.png?v=1779420176"},{"product_id":"22032020-genuine-mack-oil-thermostat-control-valve","title":"22032020 - Genuine Volvo\/Mack Thermostat, Control Valve - MP7\/D13","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Thermostat control valve designed to regulate coolant flow through the cooling system to help maintain proper engine operating temperature.\n  Proper temperature regulation supports efficient warm-up, stable performance, and helps prevent overheating under load.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack MP7\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo D13\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46541493010653,"sku":"WP20111","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20111.png?v=1779420176"},{"product_id":"21274822-genuine-mack-oil-thermostat-control-valve","title":"21274822 - Genuine Volvo\/Mack Thermostat, Control Valve - MP7\/D13","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Thermostat control valve designed to regulate coolant flow through the cooling system to help maintain proper engine operating temperature.\n  Proper temperature regulation supports efficient warm-up, stable performance, and helps prevent overheating under load.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack MP7\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo D13\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46541493403869,"sku":"WP20111","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20111.png?v=1779420176"},{"product_id":"24147225-genuine-mack-control-valve","title":"24147225 - Genuine Volvo\/Mack Piston Cooling Control Valve, Oil","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Piston cooling control valve designed to regulate engine oil flow to piston cooling jets to support proper piston temperature control under varying load conditions.\n  Proper oil flow regulation helps maintain stable lubrication performance and supports engine durability.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46552392990941,"sku":"WP20133","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20133.png?v=1779585464"},{"product_id":"23013332-genuine-mack-control-valve","title":"23013332 - Genuine Volvo\/Mack Piston Cooling Control Valve, Oil","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Piston cooling control valve designed to regulate engine oil flow to piston cooling jets to support proper piston temperature control under varying load conditions.\n  Proper oil flow regulation helps maintain stable lubrication performance and supports engine durability.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46552452825309,"sku":"WP20133","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20133.png?v=1779585464"},{"product_id":"21939725-genuine-mack-control-valve","title":"21939725 - Genuine Volvo\/Mack Piston Cooling Control Valve, Oil","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Piston cooling control valve designed to regulate engine oil flow to piston cooling jets to support proper piston temperature control under varying load conditions.\n  Proper oil flow regulation helps maintain stable lubrication performance and supports engine durability.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVolvo\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Volvo\/Mack","offers":[{"title":"Default Title","offer_id":46552455119069,"sku":"WP20133","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20133.png?v=1779585464"},{"product_id":"3937210-intake-manifold-engine-grid-heater","title":"3937210 - Genuine Cummins Intake Manifold Engine Grid Heater","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Intake manifold engine grid heater is an intake air heating component used in diesel engines to raise the temperature of incoming air before combustion, especially during cold-weather starting conditions. It helps improve ignition quality during startup, support smoother cold starts, reduce strain during initial engine operation, and contribute to more consistent intake system performance in demanding environments.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVerify fitment with us before ordering.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":47733152612573,"sku":"WP20174","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20174.webp?v=1779765364"},{"product_id":"3969987-intake-manifold-engine-grid-heater","title":"3969987 - Genuine Cummins Intake Manifold Engine Grid Heater","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Intake manifold engine grid heater is an intake air heating component used in diesel engines to raise the temperature of incoming air before combustion, especially during cold-weather starting conditions. It helps improve ignition quality during startup, support smoother cold starts, reduce strain during initial engine operation, and contribute to more consistent intake system performance in demanding environments.\n\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin:0 0 10px 18px; padding:0; list-style-position:outside;\"\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eVerify fitment with us before ordering.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Verify fitment with us before ordering to ensure the correct part for your application.\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":47733153431773,"sku":"WP20174","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20174.webp?v=1779765364"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/collections\/wp20111.png?v=1779420583","url":"https:\/\/wisentpartscenter.com\/collections\/thermostats-valves.oembed","provider":"Wisent Parts Center","version":"1.0","type":"link"}