{"product_id":"4-port-ls-coolant-crossover-steam-vent-kit","title":"EVIL ENERGY LS Coolant Steam Port Crossover Kit for GM LS LS1 LS2 LS3 LS6 LS7 LSX Engines, 4-Port Cylinder Head Steam Vent Hose Kit with Black Cotton Braided Hose","description":"\u003cp\u003e---!@!start!@!---Specifications---!@!end!@!---\u003c\/p\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eEVIL ENERGY\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Grade\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003ePerformance Part\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eFit Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eVehicle Specific Fit\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eGM LS Series Engines, including LS1, LS2, LS3, LS6, LS7, LSX, LM7, LR4, LQ4, L59, LQ9, LM4, and other compatible LS applications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eNot Compatible With\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eFAST 102 intake manifolds\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePort Design\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e4-Port design connecting the cylinder head steam ports above cylinders #1, #2, #7, and #8\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eHose Material\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eBlack cotton braided hose\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCoolant Port Material\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAluminum alloy\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eFitting Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e4AN cross fitting and 4AN tee fitting\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eBlack\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1.5 cm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eItem Dimensions (L x W)\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e20\" x 6\"\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eIncluded Components\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e4 x bolts, 4 x coolant ports, 1 x 4AN cross fitting, 1 x 4AN tee fitting, 1 x PTFE tape, 5 x black cotton braided hoses\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInstallation Location\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eCylinder head steam ports, front and rear, above cylinders #1, #2, #7, and #8\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCorrosion Resistance\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAluminum alloy ports designed for heat, coolant exposure, and corrosion resistance\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e---!@!start!@!---Description---!@!end!@!---\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/Coolant_Steam_Crossover_Tube_Kit-1004-7.1-a1.webp?v=1782886327\" alt=\"EVIL ENERGY LS coolant crossover steam vent kit with black braided hoses, aluminum coolant ports, and 4AN fittings\"\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eEVIL ENERGY LS coolant crossover steam vent kit\u003c\/strong\u003e is designed for compatible \u003cstrong\u003eGM LS series engines\u003c\/strong\u003e, including LS1, LS2, LS3, LS6, LS7, LSX, LM7, LR4, LQ4, L59, LQ9, LM4, and other listed LS applications. This \u003cstrong\u003e4-port LS steam vent kit\u003c\/strong\u003e connects the front and rear cylinder head steam ports above cylinders #1, #2, #7, and #8 to help release trapped steam and support more stable coolant circulation.\u003c\/p\u003e\n\n\u003cp\u003eThis kit includes black cotton braided hoses, aluminum alloy coolant ports, a 4AN cross fitting, a 4AN tee fitting, PTFE tape, and installation hardware. Before ordering, confirm your LS engine family, intake manifold style, steam port layout, and available clearance. This kit is \u003cstrong\u003enot compatible with FAST 102 intake manifolds\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/Coolant_Steam_Crossover_Tube_Kit-1004-7.1-a2.webp?v=1782886506\" alt=\"LS steam vent kit components with black braided hoses, 4AN cross fitting, tee fitting, bolts, and coolant ports\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesigned for Compatible GM LS Engines:\u003c\/strong\u003e This LS coolant crossover kit is made for listed GM LS series applications, including LS1, LS2, LS3, LS6, LS7, LSX, LM7, LR4, LQ4, L59, LQ9, LM4, and other compatible LS engines. Always verify your engine, intake manifold, and steam port configuration before purchase.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-Port Steam Vent Layout:\u003c\/strong\u003e The kit connects the front and rear cylinder head steam ports above cylinders #1, #2, #7, and #8. This layout helps route trapped steam or air pockets away from the cylinder heads and back into the cooling system path.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete LS Steam Port Kit Components:\u003c\/strong\u003e Package includes 4 bolts, 4 aluminum alloy coolant ports, 1 4AN cross fitting, 1 4AN tee fitting, 1 roll of PTFE tape, and 5 black cotton braided hoses for a clean LS steam port crossover installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlack Cotton Braided Hose:\u003c\/strong\u003e The black braided hose is designed for engine-bay routing where heat exposure, coolant contact, and abrasion resistance matter. Check hose routing carefully to avoid sharp edges, moving parts, and exhaust heat.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminum Alloy Coolant Ports:\u003c\/strong\u003e The included coolant ports are made from aluminum alloy to support durability, corrosion resistance, and reliable sealing when installed with proper surface preparation and thread sealing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance Build Friendly:\u003c\/strong\u003e This LS steam vent kit is a practical cooling-system upgrade for LS swaps, street performance builds, drag cars, drift cars, endurance builds, and off-road projects where front and rear steam port routing is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/Coolant_Steam_Crossover_Tube_Kit-1004-7.1-a6.webp?v=1782886765\" alt=\"EVIL ENERGY LS coolant crossover kit showing 4-port steam vent routing for LS cylinder heads\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eGM LS Engine Steam Port Solution\u003c\/h3\u003e\n\n\u003cp\u003eThe EVIL ENERGY LS Coolant Steam Port Crossover Kit is built for compatible GM LS engine applications, including LS1, LS2, LS3, LS6, LS7, LSX, LM7, LR4, LQ4, L59, LQ9, LM4, and other listed LS engines. The 4-port design connects the steam ports at the front and rear of the cylinder heads, helping trapped steam and air pockets move out of the high points of the cooling system.\u003c\/p\u003e\n\n\u003cp\u003eThis type of \u003cstrong\u003eLS steam port kit\u003c\/strong\u003e is commonly used on LS swaps and modified LS builds where coolant routing, intake clearance, and steam vent plumbing need to be checked carefully. It may also be used in setups that reroute or simplify the factory throttle body coolant path when the vehicle build supports that configuration.\u003c\/p\u003e\n\n\u003cp\u003eFitment is important. This kit is \u003cstrong\u003enot compatible with FAST 102 intake manifolds\u003c\/strong\u003e. Before installation, verify intake manifold clearance, steam port location, valley cover area, MAP\/sensor clearance, hose routing, and cooling-system return location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/Coolant_Steam_Crossover_Tube_Kit-1004-7.1-a5.webp?v=1782886793\" alt=\"Black cotton braided LS steam vent hoses with aluminum coolant ports for GM LS engines\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eBuilt for Heat, Coolant Exposure, and Engine-Bay Routing\u003c\/h3\u003e\n\n\u003cp\u003eThis LS coolant crossover kit uses black cotton braided hose and aluminum alloy coolant ports for use in demanding engine-bay environments. The hoses provide flexible routing around intake components, brackets, and accessory-drive areas, while the aluminum alloy ports support corrosion resistance and stable coolant-port connection when installed correctly.\u003c\/p\u003e\n\n\u003cp\u003eThe 4AN cross fitting and 4AN tee fitting help organize the front and rear steam vent routing into a clean crossover layout. For best results, inspect the sealing surfaces, apply PTFE tape only where appropriate, tighten fittings carefully, and avoid over-tightening small coolant-port hardware.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/Coolant_Steam_Crossover_Tube_Kit-1004-7.1-a3.webp?v=1782886807\" alt=\"LS coolant crossover hose and 4AN fittings for front and rear steam port connection\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eComplete Kit for LS Steam Port Crossover Installation\u003c\/h3\u003e\n\n\u003cp\u003eThe EVIL ENERGY LS steam port crossover kit includes the key components needed for a 4-port steam vent layout: 4 bolts, 4 aluminum alloy coolant ports, 1 4AN cross fitting, 1 4AN tee fitting, 1 roll of PTFE tape, and 5 black cotton braided hoses.\u003c\/p\u003e\n\n\u003cp\u003eThis kit is suitable for LS engine projects where the builder needs to connect the cylinder head steam ports and route trapped steam back into the cooling system. Installation should be checked carefully after the first heat cycle. Recheck fittings, hose routing, coolant level, and any signs of seepage after bleeding the cooling system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/Coolant_Steam_Crossover_Tube_Kit-1004-7.1-a4.webp?v=1782886826\" alt=\"Installed LS steam port crossover kit with black braided hoses and aluminum coolant fittings\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eImportant Fitment and Installation Notes\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eConfirm your LS engine family before ordering.\u003c\/li\u003e\n  \u003cli\u003eCheck intake manifold clearance before installation.\u003c\/li\u003e\n  \u003cli\u003eThis kit is not compatible with FAST 102 intake manifolds.\u003c\/li\u003e\n  \u003cli\u003eVerify the cylinder head steam port layout above cylinders #1, #2, #7, and #8.\u003c\/li\u003e\n  \u003cli\u003eCheck hose routing around belts, pulleys, headers, exhaust heat, and sharp edges.\u003c\/li\u003e\n  \u003cli\u003eUse PTFE tape only on suitable threaded connections and avoid contaminating coolant passages.\u003c\/li\u003e\n  \u003cli\u003eBleed the cooling system after installation and recheck coolant level after the first heat cycle.\u003c\/li\u003e\n  \u003cli\u003eThis kit can help release trapped steam, but cooling performance also depends on the radiator, water pump, thermostat, fans, coolant condition, and installation quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What does this LS coolant crossover kit do?\u003c\/strong\u003e\u003cbr\u003e\nA: This LS coolant crossover kit connects the front and rear cylinder head steam ports to help release trapped steam or air pockets from the LS cooling system.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this the same as an LS steam vent kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. Many users search for this type of part as an LS steam vent kit, LS steam port kit, LS coolant crossover kit, or LS steam port crossover kit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Which engines does this kit fit?\u003c\/strong\u003e\u003cbr\u003e\nA: It is designed for compatible GM LS series engines, including LS1, LS2, LS3, LS6, LS7, LSX, LM7, LR4, LQ4, L59, LQ9, LM4, and other listed LS applications. Confirm your exact engine and intake setup before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this kit compatible with FAST 102 intake manifolds?\u003c\/strong\u003e\u003cbr\u003e\nA: No. This kit is not compatible with FAST 102 intake manifolds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit connect all four steam ports?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. The 4-port layout is designed to connect the cylinder head steam ports above cylinders #1, #2, #7, and #8.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can this kit fix every overheating issue?\u003c\/strong\u003e\u003cbr\u003e\nA: No. It can help release trapped steam and support coolant circulation, but overheating may also be caused by the radiator, thermostat, water pump, fans, coolant level, hose routing, air trapped elsewhere, or engine condition.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What should I check before installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Check intake manifold clearance, steam port layout, hose routing, fitting direction, sealing surfaces, coolant return location, and nearby heat or moving components.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to bleed the cooling system after installation?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. After installing an LS steam vent kit, bleed the cooling system, refill coolant as needed, and inspect for seepage after the first heat cycle.\u003c\/p\u003e\n","brand":"EVIL ENERGY","offers":[{"title":"Default Title","offer_id":46149823365256,"sku":"EVBQP0001004","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/5403\/0984\/files\/CoolantSteamCrossoverTubeKit-1004-7.1-m1.webp?v=1782887142","url":"https:\/\/www.ievilenergy.com\/products\/4-port-ls-coolant-crossover-steam-vent-kit","provider":"EVILENERGY","version":"1.0","type":"link"}