Steam Line Plumbing Kit GM LS Engine

The Steam Line Plumbing Kit GM LS Engine by Trick Flow is a precision-engineered coolant routing solution designed for LS-series engine builds. Built for enthusiasts and professional builders who demand reliable thermal management in high-performance applications, this four-corner steam vent kit addresses cooling system efficiency across the entire engine block. Whether you're running a stock LS, a stroker, or a turbocharged variant, proper coolant circulation through all cylinder head corners prevents air pockets and hot spots that compromise reliability.

This plumbing kit features a black-finished modular design with dedicated fittings and hoses that connect to all four corners of the LS cylinder head, ensuring uniform coolant flow and effective steam evacuation. The strategic vent routing prevents pressure buildup in the cooling jacket and eliminates the common problem of localized boiling near the spark plugs. Trick Flow's component-grade construction uses quality brass fittings and reinforced hose assemblies rated for typical LS cooling system pressures, making this kit suitable for street, road-race, and moderate boost applications without requiring constant tuning adjustments.

Builders upgrading to Trick Flow cylinder heads or retrofit-cooling an existing LS platform benefit most from this kit, as comprehensive four-corner plumbing eliminates guesswork in coolant path optimization. Installation pairs naturally with LS engine swaps, custom water pump configurations, and aluminum radiator upgrades where redundant vent lines ensure air always finds a path out. The compact package (weighing under one pound) fits efficiently around the engine bay without restricting header or accessory placement, making it a go-to choice for street rods, trucks, and competition vehicles where cooling reliability matters.