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Water Inlet Crossover Kit for GM LS Engines
These new adapters and crossover tubes allow easy installation of a remote mounted electric water pump on the GM LS engine. These billet aluminum block adapters feature (4) -12 AN O-ring female ports for routing water to a remote mounted electric water pump. The 1/8" NPT Port can be used to connect to the steam tube plumbing.
GM LS1 - LS3 Thermostatic Control Crossover Cooling System for Non-Circulating Pump Applications
AT last a cooling system solution for adapting the popular GM LS engine into any Jet Boat or application with an external water pump source. This system allows removal of the Automotive engine mounted water circulation pump and provides both water inlet/outlet and temperature control through the integrated thermostat assembly. Clean, simple, and reliable the perfect solution for retrofitting the LS modern engine into a jet boat or any boat not utilizing the OEM circulating pump.
GM LS1 - LS3 Thermostatic Cooling System for Freshwater Sterndrive Applications
As Hardin Marine continues the quest towards new product development they have designed an easy to install thermostatic cooling system for freshwater raw water cooled engine applications. This system allows use of an OEM circulating style water pump and multiple accessory drive kits to to be used while providing the necessary thermostat assembly for temperature control. This is perfect for retrofitting a GM LS based engine into most popular sterndrive engine applications using a sea water pump assembly. Precision CNC machined and anodized satin finish make for an attractive compact fitment. Each unit features a 160 degree thermostat while other heat range thermostats and a bypass hose assembly is sold separately.
These are the same coolers OEM Engine manufactures use on their LSA Marine engine conversions. The OEM manufacturer builds their own bracketry and it IS NOT available. So if you plan on buying these units each has a mounting bolt pad but you will need to build YOUR OWN bracketry. If you do not understand closed cooling seek a professional engine builder. There is NOT additional specs available what you see is what we sell we have attached plumbing instructions and some diagrams to assist. They are sold as tanks ONLY for both the engine and the intercooler. Seek a knowledgeable professional for installation.
LS1, LS2, LS3 and LS6 Closed Cooling Kit - Copper / Brass
While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around new LS1, LS2, LS3 and LS6 applications. The kit is perfect for engines making up to 650 horsepower.
We offer the closed cooling tank version with a pre-primed coat, where you can paint-to-finish. This allows you to customize it to your engine for the ultimate in appearance and durability. This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.
The Kit comes with: Tank, Brackets, Hoses, and Thermostat Housing.
Bypass Hose Kit GM LS1 - LS3 Thermostatic Cooling System
For use with 625-4530 Thermostatic Cooling System.