Water Dividers & Thermostat Housings

Thermostat kits are for Small Block and Big Block Chevy and 455 Olds. We found the majority of marine engines, particularly in jet boat applications, run far too cold to obtain proper combustion temperature, power out, economy and engine life. Most engines are designed to run at a minimum of 160 degrees water temperature for proper performance. This thermostat system is designed for use on cold water source cooling systems. It will keep engine temperature between 160 and 190 degrees which is the most desirable temperature range obtained. The temperature will cycle up to 30 degrees within this range, due to cold water entering the system once the thermostat opens. We do not recommend this system be used on supercharged or turbocharged engines which run for long periods of time at maximum or near maximum power output. We do not recommend this system be used in extremely sandy areas - sand build up can interfere with proper operation of the thermostat.

These billet aluminum water outlet dividers replace the stock thermostat housing for plumbing water directly out of the engine.  Each divider tee is machined from 6061-T6 billet aluminum and hard anodized in black.

This unit replaces the stock thermostat housing for plumbing water directly out of the engine.

This beautiful cast stainless steel thermostat housing is designed to replace that ugly black factory cast iron unit that is original equipment on most MerCruiser applications. It's gleaming polished finish adds sparkle to any engine. Designed to work in conjunction with the factory circulating pump.

These highly polished handcrafted stainless steel water dividers are available in many configurations to fit a number of plumbing applications. These dividers are designed to fit Chevrolet engines and cannot be used with a thermostat unless ordered with the bypass hole in the top. Bypass hole can also be used for temperature sender.

These all stainless steel dividers have been specially designed for Chevrolet engine applications using superchargers. Their unique size and shapes make them much easier to work with than standard dividers.

These beautiful cast stainless steel water divider outlets work fabulous on Chevrolet engines. Their unique design positions the hose connections in front of the motor for easy plumbing access.

This one inch thick thermostat housing spacer is machined to accept a thermostat on the top and has two 1/4" female pipe holes.  This spacer does an excellent job of relocating temperature senders.

These hi-flow brass marine thermostats feature air relief parts. This enables steam pockets caused by cold water entering a heated engine block. Their hi-flow design help to maintain the most constant temperature. Don't trust your engine to anything less.