LS1 Straight Water Inlet Black

The LS1 Straight Water Inlet Black from MEZIERE is a specialized cooling system component designed for LS-platform engine builds, particularly in high-performance street or track applications. This straight inlet manifold replaces the factory water passage entry point, allowing for customized coolant flow routing that can enhance thermostat response and optimize engine bay layout.

Constructed from durable black-finished aluminum, the LS1 Straight Water Inlet features a direct flow geometry that minimizes turbulence and pressure drop within the cooling jacket. Its straight design maximizes internal diameter clearance and reduces the risk of sediment pooling, which is crucial for aggressive racing engines or high-RPM street builds.

Engine builders, professional shops, and LS swap enthusiasts will find this inlet beneficial for various applications, including larger displacement stroker kits and supercharged or turbocharged LS builds. Its threaded inlet ports accept standard 90-degree hose fittings, making it a versatile choice for custom cooling system layouts.