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

The EVIL ENERGY LS coolant crossover steam vent kit 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. This 4-port LS steam vent kit 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.

This 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 not compatible with FAST 102 intake manifolds.

Key Features

• Designed for Compatible GM LS Engines: 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.
• 4-Port Steam Vent Layout: 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.
• Complete LS Steam Port Kit Components: 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.
• Black Cotton Braided Hose: 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.
• Aluminum Alloy Coolant Ports: 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.
• Performance Build Friendly: 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.

GM LS Engine Steam Port Solution

The 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.

This type of LS steam port kit 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.

Fitment is important. This kit is not compatible with FAST 102 intake manifolds. Before installation, verify intake manifold clearance, steam port location, valley cover area, MAP/sensor clearance, hose routing, and cooling-system return location.

Built for Heat, Coolant Exposure, and Engine-Bay Routing

This 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.

The 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.

Complete Kit for LS Steam Port Crossover Installation

The 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.

This 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.

Important Fitment and Installation Notes

• Confirm your LS engine family before ordering.
• Check intake manifold clearance before installation.
• This kit is not compatible with FAST 102 intake manifolds.
• Verify the cylinder head steam port layout above cylinders #1, #2, #7, and #8.
• Check hose routing around belts, pulleys, headers, exhaust heat, and sharp edges.
• Use PTFE tape only on suitable threaded connections and avoid contaminating coolant passages.
• Bleed the cooling system after installation and recheck coolant level after the first heat cycle.
• This kit can help release trapped steam, but cooling performance also depends on the radiator, water pump, thermostat, fans, coolant condition, and installation quality.

FAQ

Q: What does this LS coolant crossover kit do?
A: 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.

Q: Is this the same as an LS steam vent kit?
A: 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.

Q: Which engines does this kit fit?
A: 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.

Q: Is this kit compatible with FAST 102 intake manifolds?
A: No. This kit is not compatible with FAST 102 intake manifolds.

Q: Does this kit connect all four steam ports?
A: Yes. The 4-port layout is designed to connect the cylinder head steam ports above cylinders #1, #2, #7, and #8.

Q: Can this kit fix every overheating issue?
A: 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.

Q: What should I check before installation?
A: Check intake manifold clearance, steam port layout, hose routing, fitting direction, sealing surfaces, coolant return location, and nearby heat or moving components.

Q: Do I need to bleed the cooling system after installation?
A: 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.

Brand Summary

Return Reasons

1. Quality Issues: Provide photos/videos; we cover return shipping.
2. Wrong Item Ordered: Buyer covers return shipping; email within 30 days.
3. Change of Mind: Buyer covers return shipping; email within 30 days.
4. Shipping Damage: Inspect packages; do not sign for damaged items.
5. Incorrect Item Shipped: Contact within 7 days.

Price Protection Policy

Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.

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