Clifton, Unfortunately there are not going to be any full fresh water cooling systems for engines making this much Hp. The pressure/flow losses thru the marine exhaust systems are too great and therefore reduce the coolant flow through the engine to the point that localized hot spots form and introduce detonation to the engine.  Let me […]

Darcy, Thanks for your inquiry and the opportunity at earning your business. The Inline 6 Cylinder Mercruiser Exhaust Manifold is definitely getting harder to locate these days. We do however specialize in the Mercruiser Marine Exhaust Systems and have this particular model in stock. Using the link below can you match this to your existing manifold […]

David, Thanks for your inquiry and the opportunity at earning your business. We have a vriety of Marine Cylinder Heads both remanufactured and new. Using the link below could you verify the cylinder head casting number since there were several different options that match that particular year of engine? You can then use the 2nd […]

**Performance Product Technologies Marine Engines Parts Technical Specifications Library is loaded with Technical Articles and Videos Question: What is the best way to determine the rotation of Marine Engines? My engine is currently not running and out of the boat so I really don’t have any way to run the engine to determine this. Answer: […]

Michael, Thanks for your inquiry and the opportunity at earning your business. We do handle the complete line of Mercury Outboard Parts and Outboard Motors. Using the link below you can add your selected product(s) to your shopping cart and the shipping estimator located at the bottom of the shopping cart page will give you […]

Tony, Using the link below you can add the 12-3/4″ flywheel for the 3.0L Marine Engines to your shopping cart and the shipping estimator located at the bottom of the shopping cart page will give you a shipping cost based on your specific postal code. Keep in mind that we do have a complete selection of […]

Davis, Generally we will need the serial number of the engine/motor to be able to properly specify the correct Mercruiser Parts for it. Using the link below you can view the technical article link that illustrates where to look for that information. You can then search and add your selected product(s) to your shopping cart […]

Richard, Short blocks are no longer offered because they are simply not cost effective. Along with this they cannot be tested as a complete engine assembly and in the instances bad heads are installed onto them it’s simply too difficult to sort out the warranty responsibility. Regarding options I would recommend the remanufactured Marine longblocks […]

Dave, Thanks for your inquiry and the opportunity at earning your business. We have a variety of Marine Cooling Systems available. Yes the 5399-8 system is definitely a good option for that engine. Using the link below you can add your selected product(s) to your shopping cart and the shipping estimator located at the bottom […]

Sue, Thanks for your inquiry and the opportunity at earning your business. We do handle the complete line of Mercruiser Parts and Mercruiser Engines. Using the link below you can add your selected product(s) to your shopping cart and the shipping estimator located at the bottom of the shopping cart page will give you a […]