Water Pump Adapters for GM Gen III/IV LS Engines

Earl’s LS coolant and steam tube plumbing components provide engine builders with versatile solutions for adapting modern cooling systems to GM LS engines. Designed to simplify custom plumbing, these precision-machined billet aluminum adapters support both remote-mounted electric water pump installations and the use of big block Chevy electric water pumps on LS platforms. Multiple AN hose connections allow clean, professional coolant routing, while integrated NPT steam ports provide proper steam tube management for LS cylinder heads. Built with durable black anodized billet construction and O-Ring sealing surfaces for leak-free performance, Earl’s cooling adapters deliver the strength, flexibility, and installation efficiency required for high-performance street, racing, and custom LS engine applications.