{"product_id":"heater-core-bypass-loops-hose-coolant-crossover-for-ls1-lsx-ls2-ls3-lq4","title":"Chevy LS Engine Heater Core Bypass Hose, Thickened EPDM Rubber","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade and simplify your Chevy LS engine cooling system with the Chevy LS Engine Heater Core Bypass Hose in thickened EPDM rubber. This custom-molded U-shaped bypass hose is designed to install on the LS water pump and loop the heater hose lines, giving you a reliable coolant bypass when you don’t need heater operation, during maintenance, or while diagnosing the cooling system. Built for GM Chevrolet and Pontiac all LS and LT series engines from 98-up, it accommodates both 5\/8\" and 3\/4\" heater ports for a secure, leak-free fit.\u003c\/p\u003e \u003cp\u003eThe thickened EPDM rubber construction delivers excellent resistance to oil, coolant, and fuels, while remaining easy to clean and long-lasting under engine bay conditions. The hose ends are molded to accommodate a 5\/8\" port on one side and a 3\/4\" port on the other, ensuring a straightforward installation on compatible LS Gen 3\/4\/5 engines.\u003c\/p\u003e \u003ch3\u003eBenefits \u0026amp; Tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eSimple installation with a dedicated U-shaped design that reliably routes coolant away from the heater core, reducing flow restrictions and potential leaks during maintenance.\u003c\/li\u003e \u003cli\u003eDurable, oil- and coolant-resistant EPDM material stands up to the harsh conditions of the engine bay while remaining flexible enough for easy positioning.\u003c\/li\u003e \u003cli\u003eVersatile use for diagnostic work or heater-core service on 98-up LS, LT Gen 3\/4\/5 engines with 5\/8\" and 3\/4\" heater ports—replacing a brittle or worn bypass hose with a single, reliable part.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eProduct specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaterial: Thickened EPDM Rubber\u003c\/li\u003e \u003cli\u003eFinish: Oil, Coolant and Fuel-Resistant\u003c\/li\u003e \u003cli\u003eOrigin: Mainland China\u003c\/li\u003e \u003cli\u003eHose ends ID: One end 5\/8\", other end 3\/4\"\u003c\/li\u003e \u003cli\u003eApplication: For GM Chevrolet Pontiac all LS, LT series 98-up LS LT GEN 3 4 5 Engine with 5\/8\" and 3\/4\" heater supply and return ports\u003c\/li\u003e \u003cli\u003ePackage includes: 1 x \"U\" hose, 2 x Stainless steel clamps\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePackage includes:\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e1 x \"U\" hose\u003c\/li\u003e \u003cli\u003e2 x Stainless steel clamps\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWarnings\/Reminders\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the engine and cooling system are completely cool before installation.\u003c\/li\u003e \u003cli\u003eVerify port sizes: one end is 5\/8\" and the other is 3\/4\" to match your LS LT Gen 3\/4\/5 engine.\u003c\/li\u003e \u003cli\u003eUse the included stainless steel clamps for a secure, leak-free seal.\u003c\/li\u003e \u003cli\u003eCheck that the bypass hose routing does not interfere with other hoses or components in the engine bay.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAll electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.\u003c\/p\u003e \u003cp\u003eProviding quality and trusted service since 2002 at intercyprus.com.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"InterCyprus Trading Ltd","offers":[{"title":"black","offer_id":52555152916822,"sku":"1005010007964187-black","price":28.51,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/0604\/1274\/files\/Sb4aec3ebf84347ebb1213b0f0ca38fa5F.webp?v=1770661808","url":"https:\/\/www.intercyprus.com\/products\/heater-core-bypass-loops-hose-coolant-crossover-for-ls1-lsx-ls2-ls3-lq4","provider":"InterCyprus Trading Ltd","version":"1.0","type":"link"}