EVIL ENERGY LS Coolant Steam Port Crossover Kit for GM LS LS1 LSX LM7 LQ4 LS6 LQ9 Engines, Throttle Body Bypass Hose Kit for 3-Bolt DBC/DBW Gen 3 Throttle Body with Steel Braided Hose

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Specification	Details
Brand	EVIL ENERGY
Material	Stainless steel braided hose / Aluminum alloy coolant ports
Color	Silver
Item Dimensions (L x W)	10.4" x 1.8"
Outside Diameter	1.5 cm / 0.59 inch
Included Components	2 x coolant ports, 3 x bolts, 1 x stainless steel braided hose, 1 x PTFE tape
Compatibility	Compatible GM LS applications, including LS1, LSX, LM7, LQ4, LS6, LQ9, L59, LR4, LM4, and other listed LS series engines
Throttle Body Type	3-bolt Gen 3 DBC / DBW throttle body applications
Port Design	2-port coolant steam crossover layout for upper cylinder head coolant passages above cylinders #1 and #2
Application	LS coolant steam port crossover / throttle body bypass-style routing
Not Compatible With	FAST 102 intake manifolds

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The EVIL ENERGY LS coolant steam port crossover kit is designed for compatible GM LS series engines, including LS1, LSX, LM7, LQ4, LS6, LQ9, L59, LR4, LM4, and other listed LS applications. This 2-port LS steam port kit connects the upper cylinder head coolant passages above cylinders #1 and #2 and can be used as part of a throttle body bypass-style coolant routing setup.

This kit includes 2 aluminum alloy coolant ports, 3 bolts, 1 stainless steel braided hose, and PTFE tape. Before ordering, confirm your LS engine family, 3-bolt Gen 3 DBC/DBW throttle body setup, intake manifold clearance, steam port layout, and coolant routing. This kit is not compatible with FAST 102 intake manifolds.

Key Features

• Designed for Compatible GM LS Engines: This EVIL ENERGY LS coolant crossover kit is made for listed GM LS series applications, including LS1, LSX, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, and other compatible LS engines. Always verify your engine, throttle body type, intake manifold, and steam port layout before purchase.
• 2-Port Steam Port Crossover Layout: The kit connects the upper cylinder head coolant passages above cylinders #1 and #2, helping route trapped steam or air away from the LS cylinder head steam port area.
• Throttle Body Bypass-Style Routing: Designed for 3-bolt Gen 3 DBC/DBW throttle body applications where the build supports bypass-style coolant routing. Final routing depends on your engine setup and cooling-system layout.
• Included Installation Components: Package includes 2 aluminum alloy coolant ports, 3 bolts, 1 stainless steel braided hose, and 1 roll of PTFE tape for LS steam port crossover installation.
• Stainless Steel Braided Hose: The braided hose is designed for engine-bay routing where heat exposure, coolant contact, and abrasion resistance matter. Route the hose away from headers, exhaust heat, belts, pulleys, and sharp edges.
• Aluminum Alloy Coolant Ports: The aluminum alloy coolant ports support corrosion resistance and stable steam port connection when installed on clean, undamaged sealing surfaces.

Steam Port Crossover and Throttle Body Bypass Design

This LS steam port crossover kit connects the upper cylinder head coolant passages above cylinders #1 and #2. In compatible LS builds, this setup can help route trapped steam or air from the cylinder head area and support a cleaner throttle body bypass-style coolant path.

The stainless steel braided hose provides flexible routing around intake components and accessory areas, while the aluminum alloy ports are designed for coolant exposure and engine-bay heat. For best results, inspect all sealing surfaces, confirm fitting alignment, apply PTFE tape only where suitable, and recheck the system after the first heat cycle.

Compatible LS Engine Applications

This coolant steam port crossover kit is designed for compatible GM LS-based engines, including LS1, LSX, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, and other listed LS applications. It is intended for 3-bolt Gen 3 DBC and DBW throttle body applications.

Fitment is important. This kit is not compatible with FAST 102 intake manifolds. Before installation, confirm the throttle body type, intake manifold clearance, steam port location, hose routing, coolant return path, and nearby heat or moving components.

Important Fitment and Installation Notes

• Confirm your LS engine family before ordering.
• Designed for compatible 3-bolt Gen 3 DBC/DBW throttle body applications.
• This kit is not compatible with FAST 102 intake manifolds.
• Verify the upper cylinder head coolant passages above cylinders #1 and #2 before installation.
• Check intake manifold clearance, hose routing, coolant return location, and nearby heat or moving components.
• Route the stainless steel braided hose away from 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 route trapped steam or air, but cooling performance also depends on the radiator, water pump, thermostat, fans, coolant condition, and installation quality.

FAQ

Q: What does this LS coolant steam port crossover kit do?
A: This kit connects the upper cylinder head coolant passages above cylinders #1 and #2 to help route trapped steam or air away from the LS cylinder head steam port area.

Q: Is this an LS steam port kit or throttle body bypass kit?
A: It can be described as both. Many users search for this product as an LS steam port kit, LS coolant crossover kit, LS coolant steam port crossover kit, or LS throttle body bypass kit.

Q: Which engines does this kit fit?
A: It is designed for compatible GM LS series engines, including LS1, LSX, LM7, LR4, LQ4, LS6, L59, LQ9, LM4, and other listed LS applications. Confirm your exact engine, throttle body type, and intake setup before ordering.

Q: Is this kit for 3-bolt throttle bodies?
A: Yes. This kit is intended for 3-bolt Gen 3 DBC/DBW throttle body applications.

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: No. This is a 2-port LS steam port crossover kit for the upper cylinder head coolant passages above cylinders #1 and #2. If your build requires front and rear four-corner steam routing, choose a compatible 4-port setup.

Q: Can this kit fix every overheating issue?
A: No. It can help route trapped steam or air, 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 engine compatibility, throttle body type, steam port layout, intake manifold clearance, hose routing, sealing surfaces, coolant return location, and nearby heat or moving components.