Cooling Systems | FWC Kits | Pumps | Impellers | Thermostats

The Closed Cooling System Experts:

Does your boating experience leave you feeling hot—but in a bad way? PPT can help you get past this so you can cool down. With over 20 years experience, and multiple patented products we bring more to the Marine Industry than just a website offering parts for sale. Check out our HOW-TO VIDEO'S like the one below that guide you step by step on how to install a closed cooling system;

We handle everything from Heat Exchangers to raw water pumps, oil coolers, circulating pumps, power steering coolers and everything in between. It's important to realize that the cooling system is the heart of the Marine Engine. If you don't believe that just ask any BOATER how much time they've spent trying to diagnose an overheat situation on their boat.

Realizing this and having an engineering backgrounds along with Marine Industry experience, PPT combines the Know How along with Customer Service to point you in the direction that will get your problems resolved economically. And this is not just a sales pitch to pull you in either. Check out the various technical articles we have in our Technical Library that address a range of topics from How To Install a Closed Cooling System to How to Diagnose a Marine Engine Overheat Situation. At PPT we understand that there are various companies selling Marine Cooling System products online, however very few of them step up to the plate and provide the Technical Customer Service we provide.

PPT's Marine Cooling System Products & Services

When it comes to protecting your Boat's engine investment, the cooling and exhaust systems are undoubtedly at the top of the list. PPT offers unmatched technical expertise regarding both of these systems with our Mercruiser Parts Catalog. After having designed and engineered OEM systems for both the Cooling and Exhaust products while engineers at MerCruiser, we now offer you the same design and engineering expertise along with the products we offer. You can shop online to find the largest selection of Mercruiser Closed Cooling Systems. PPT also offers marine heat exchangers, water pumps, and a full variety of other marine cooling systems products. However, where PPT sets itself apart is in our effort to assist you in determining the best all around product for your particular boating application. Not all products are the same, while many are acceptable for certain applications and operating conditions many of the newer engines require more efficient cooling systems to support the recently upgraded engines and engine management systems. Trust the thousands of customers nationwide who rely on PPT for all their marine cooling systems parts and accessories. Shop our online store today for huge savings!

The Truth Behind Fresh Water Cooling Systems

The term "Fresh Water Cooling Systems" also known as "Closed Marine Cooling Systems" can be confusing as these systems circulate antifreeze and not water. Marine Fresh Water Cooling systems are similar to the cooling system in an automobile, however, rather than a radiator they utilize a heat exchanger, and rather than using air to remove the heat generated by the engine they use lake or ocean water. Heat exchangers used in marine applications are constructed by inserting a tube bundle of small tubes, normally 150 or more, into a single large tube approximately 4" - 6" in diameter. The raw water pump provided by the sea water pump on the engine or in the sterndrive flows sea water horizontally through the inside of the smaller tubes and makes multiple passes back and forth across the unit. During this time the water is removing the heat generated by the engine which is transferred from the antifreeze. After making these multiple passes back and forth across the heat exchanger the sea water exits while flowing out the exhaust system. The anti-freeze or "jacket water" flows vertically up and down across the outside of the smaller tubes in one single pass (much like a sine wave) as it dispels the heat load of the engine into the raw water. Select the following link to see a illustrative diagram of a typical Half System... Closed cooling systems in general are generally thought to be primarily reserved for people who operate in corrosive water conditions, however as you will see these systems have much more to offer than just corrosion protection. One of the main deficiencies of the standard "open" cooling systems is that they rely on a pressure balance within the system for proper functioning. In extreme cases you can be introducing 32 F degree water into the water circulation loop that is attempting to regulate the engine at 160 degrees. This makes it nearly impossible for the engine to operate without some amount of cycling. Also with the onset of more stringent emissions regulations it is near impossible for the open cooling systems to produce a stable enough operating condition that the engine spark and fuel mapping can be maximized.   Click here to go directly to the Online Store Click here for Marine Cooling System Maintenance Products    

Select one of the QUICK LINKS to take you to your desired COOLING SYSTEM product category:
Heat Exchangers/Oil Coolers	Circulating Pumps	Fresh Water Cooling	High Performance

   

Technical Tips and Maintenance Information
FWC Benefits...	FWC Basics...	FWC Maintenance...	FWC Trouble Shooting...	FWC 1/2 System Vs. Full System...

   

Heat Exchanger & Oil Coolers

PPT also offers a wide assortment of Heat Exchangers as well as Power Steering and Oil Coolers. Once again not all after market products are the same. We utilize higher tube count bundles for our oil coolers and heat exchangers which means more effective surface cooling area in the same overall package size. The OEM's have began to realize these benefits over the past several years and so should you. Until now the only way to achieve these type of products was to go back with original equipment - no longer! While in some cases we do agree that original equipment is the better option, in these cases we also offer the OEM replacements at the industries lowest available prices, however when there is no specific requirement dictating the OEM replacement don't throw away un-necessary money.

   

Engine Circulation Pumps

If your looking to replace a worn out marine water pump PPT has a complete line of new marine water pumps. Our pumps utilize stainless steel backing plates, bronze bi-directional impellers as well as ceramic face seals. You will not find a better price on a better product!

PUMP - Inline 4 & 6 Cylinder Engines

PUMP - V6 & Small V8 Engines

PUMP - Big Block V8 Engines

   

PPT's High Performance Closed Cooling systems are the industries only product which utilize rotational thermostat housing and intake manifold features.

Rotational Thermostat Housing Front HP View1 Front HP View2 Side HP