LSA 4-Port LS Steam Kit – Proper Cooling for Boosted LS Engines The Motion Raceworks LSA 4-Port LS Steam Kit is engineered to solve one of the biggest cooling issues in LS engines: trapped steam in the rear cylinders. Unlike budget kits, this system is designed with proper routing to ensure steam and air are vented vertically, with the return line routed to the radiator just below the cap. The result is balanced head temperatures, fewer hot spots, and greater reliability under boost. Key Features: Complete 4-corner steam vent system designed for LSA and supercharged LS engines. Billet corner blocks (black anodised) and billet distribution manifold with mounting bracket. Fragola braided hoses and AN fittings included — made in the USA and built to last. Designed specifically for clearance around LSA blower/intake setups. Optional radiator return line kit with weld bung available. Fitment / Compatibility: Fits LSA and other supercharged LS engines requiring 4-corner cooling. Works with many aftermarket and factory intake manifolds used in boosted applications. Clearance must be checked with supercharger lids, spacers, and valley cover to confirm fit. Important Notes: This is a complete bolt-on kit, not a budget DIY setup — all hoses are pre-assembled for a clean, professional installation. Requires approximately 1.5″ of clearance between valley cover and intake. Return line should be routed to the radiator just below the cap for proper function. Why Choose This Kit:Tested and proven on high-power builds, this steam kit helps eliminate rear-cylinder overheating, reduces head gasket failures, makes bleeding the cooling system easier, and improves overall engine reliability. It’s a must-have upgrade for serious supercharged LS builds.
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