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The STM Coolant Overflow Reservoir is a direct replacement for the factory, plastic Evo 4/5/6 tank. Features a lightweight, aluminum construction, handmade in-house at STM with your choice of finish option. Includes a black anodized cap, stainless allen bolts and washers, brass drain fitting and high-quality silicone hose for a clean and simple install.
STM Manufacturer's Warranty