{"title":"Buy Relays \u0026 Solenoids for Heavy-Duty Trucks","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGenuine OEM relays and solenoids for heavy-duty trucks. OEM electrical relays, solenoid valves, and coil assemblies for Mack, Volvo, Freightliner, Kenworth, Peterbilt, and other major Class 8 truck electrical and pneumatic system applications.\u003c\/p\u003e","products":[{"product_id":"20557917-genuine-mack-air-intake-heater-relay","title":"20557917 - 12V\/300A, Intake Pre-Heater, Relay","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  12V\/300A intake pre-heater relay designed to switch high-current power to the intake air heater to support cold-start performance and stable warm-up operation.\n  Proper relay operation helps ensure reliable heater activation and consistent electrical control under high-load conditions.\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\u003eVolvo\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack\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":"Mack","offers":[{"title":"Default Title","offer_id":46628756848861,"sku":"WP20237","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/WP20237.png?v=1780153238"},{"product_id":"23692384-genuine-mack-air-intake-heater-relay","title":"23692384 - 12V\/300A, Intake Pre-Heater, Relay","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  12V\/300A intake pre-heater relay designed to switch high-current power to the intake air heater to support cold-start performance and stable warm-up operation.\n  Proper relay operation helps ensure reliable heater activation and consistent electrical control under high-load conditions.\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\u003eVolvo\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli style=\"margin:0;\"\u003e\u003cstrong\u003eMack\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":"Mack","offers":[{"title":"Default Title","offer_id":46628757307613,"sku":"WP20237","price":249.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/WP20237.png?v=1780153238"},{"product_id":"22226310-ignition-coil-for-mack","title":"22226310 - Genuine Volvo\/Mack Ignition Coil","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Ignition coil designed to convert battery voltage into the higher voltage needed to create a spark for proper ignition in applicable ignition systems.\n  Proper coil performance supports reliable starting, smooth operation, and consistent combustion under varying operating conditions.\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 applications\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":46705337172189,"sku":"WP20306","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20306.png?v=1780025282"},{"product_id":"21031272-ignition-coil-for-mack","title":"21031272 - Genuine Volvo\/Mack Ignition Coil","description":"\u003cp\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003cbr\u003e\n  Ignition coil designed to convert battery voltage into the higher voltage needed to create a spark for proper ignition in applicable ignition systems.\n  Proper coil performance supports reliable starting, smooth operation, and consistent combustion under varying operating conditions.\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 applications\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":46705338417373,"sku":"WP20306","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/files\/wp20306.png?v=1780025282"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7808\/6621\/collections\/wp20306-2.png?v=1780025577","url":"https:\/\/wisentpartscenter.com\/collections\/relays-solenoids.oembed","provider":"Wisent Parts Center","version":"1.0","type":"link"}