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Marine Engines Repower – Bayliner Cierra 2655, 1991 model Mercruser MCM 5.0l LX
Dennis, Thanks for your inquiry and the opportunity at earning your business. Since Mercruiser made both Alpha and Bravo sterndrive models with that engine I would not be able to tell you without knowing which one your engine is setup for. Can you give me the original engine serial number? Or can you tell me if [...]

4.3L Marine Engine Longblock Performance Specification
Mike, Thanks for your inquiry and the opportunity at earning your business. The Hp rating for longblocks is determined by the fuel system that’s install back onto the engine. For example since GM only produced one marine version of the 4.3L during this timeframe Mercruiser used this same longblock on their 190 Hp 2 barrel carb [...]

Marine Engines – Replacement marine engine for my boat 5.7 mercruiser 1992 #0d763634
Marty, Thanks for your inquiry and the opportunity at earning your business. Using the links below you can review your options. Let me know if you need any further technical information or help placing your order. In either case I will be glad to assist! Link to Block Code/Serial Number Location http://www.perfprotech.com/store/app_themes/PPT/images/block-casting-no.jpg Link to Remanufactured Longblocks http://tinyurl.com/68kcet8 Link to Remanufacturing [...]

Suzuki Marine Outboard Motors – Replacing a Fuel Pump on a DF70
Step by Step Video Instructions illustrating how to change an electric fuel pump on a Suzuki DF70 outboard motor. Watch Video

Boat Trailer Parts and Accessories – How to Replace a Boat Trailer Hub
Step by Step video instructions illustrating how to replace a leaky oil filled hub on a boat trailer. Watch Video

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Performance Product Technologies Question & Answer Forum

Topic: Mercruiser Exhaust Systems

Question: Why can I not find a replacement "cast iron" exhaust manifold for my Mercruiser 3.7L 470 engine?

Response: Mercruiser did away with the cast iron manifolds due to ongoing quality issues with the manifolds cracking. Therefore the Aluminum is the only option offered today. If you have the aluminum design you can go with just the 816219A 5 replacement manifold, however if you are replacing the cast iron manifold you will need to order the 816219A 4 kit which includes the manifold and riser. You can select the second link below and enter your serial number to find the gaskets you need as well. The system will give you the estimated shipping cost as well. Let us know if you need any assistance we will be glad to assist!

Exhaust Manifold (link to product)

Part Diagram - 816219A 4 (Manifold and Riser) (link to part diagram)

Part Diagram - 816219A 5 (Manifold Only) (link to part diagram)

The images below show the exhaust riser height configuration and height relationship with the AL exhaust system.

 Mercruiser 470 Exhaust Manifold

 

Mercruiser 470 Exhaust Manifold

 

 

Mercruiser 470 Exhaust Manifold