Mercury Mercruiser Marine - 357 Mag Alpha 4V Bobtail Engine (#865108R88)
Part #: 865108R88
This product is no longer available.
** Only Purchase Serialized MerCrusier Engines & Sterndrives from an Authorized MerCruiser Dealer. Your Warranty May Depend on It! **
PPT is your source for MerCruiser Bobtail Marine Engines. Due to it's size and power, the PLUS SERIES 357 Magnum Alpha is the ideal replacement engine for all boat applications that used the 5.0L and 350 Mag motors. These engines were commonly used to power Cruisers, Small Sport Boats & even some Mid-Sized Runabout boat applications.
The PLUS SERIES line of MerCruiser engines all utilize a completely factory remanufactured longblock in combination with all new "Marinization Accessories. Therefore, the 357 Mag Alpha is the perfect combination of cost and equipment that complies with the latest EPA Marine Regulations. These regulations require boat owners that are looking to repower an existing boat, to either use a new engine equipped with catalyst controls, or use one of these remanufactured PLUS SERIES product options. Select This Link to Read More....Remanufacturing Processes.
PLUS Series 357 Mag Alpha Installation Drawings...(Read More)
PLUS Series 357 Mag Alpha Spec Sheet....(Read More)
MerCruiser PLUS SERIES 357 Mag Alpha 4V Specifications
| Horsepower: | 275HP @ Crankshaft |
| Fuel System: | Carb |
| Engine Config: | GM Small Block V-8 |
| Displacement: | 357 CID / 5.8L |
| Bore: | 4.040" |
| Stroke: | 3.480" |
| Compression Ratio: | 9.4:1 |
| WOT Range: | 4400-4800 RPM |
| Idle Speed: | 650 RPM |
| Gasoline: | 87 Octane |
| Engine Oil: | Merc 25W40 Syn Blend |
Standard Engine Equipment
| 750cfm 4V Weber Carburetor | |
| Thunderbolt V Ignition with Knock Control | |
| New and Improved Stainless Steel Valves | |
| High Flow Flame Arrestor | |
| 1.5:1 Rocker Arms | |
| Cast Aluminum Pistons | |
| High Flow Oil Pump | |
| 160°F Thermostat | |
| Marine Roller Camshaft: | |
| Intake Lift: | 0.465" |
| Exhaust Lift: | 0.451" |
| Cast Nodular Iron Heads: | |
| Intake Valve Diameter: | 1.94" |
| Exhaust Valve Diameter: | 1.50" |
Available Engine Options |
|
| Fresh Water Cooling | MercOptFWC-2 |
| 3" Riser | MercOpt3R-1 |
**Important**
*Note: This engine does not include a Y-Pipe, Intermediate Elbows, Bellows, Trimp Pump or Steering Actuator
*Select the following link to view the Mercruiser Rigging Products such as Harnesses, Remote Controls, and Gauges......Mercruiser Rigging Catalog
*Click here to go to the shim kit that is necessary to mount all new Mercruiser bobtail engines.
*1-Year Factory Warranty or Optional 2 Additional Years of Coverage Available.
*For Hawaii, Alaska, or international shipping prices, please call.
*Specifications and prices are subject to change without notice.
*An electrical harness adapter may required when repowering a boat and replacing an engine that had the old style 10 pin connector used up through approximately 2006. Click here to go the adapter.