Having trouble locating the parts you need? We carry over 130 manufacturers’ products, over 100,000+ part numbers and decades of various engines, models and horsepower. The process of identifying the right part can be daunting at times. Let MPS be your go-to source for help identifying and locating your specific parts need. Here are some ways to contact us and get support from our ABYC-certified experts:

Please provide as us with as much information as possible in order for us to accurately identify the items you need!

Information such as part number, description of the item(s) needed, serial number (engine, transom, drive, transmission, etc.), model number, and year are examples of the type of information that will help us accurately locate your requested items.  Usually, the make and year of the boat are not relevant for finding the correct parts.

Below are some common brands of marine engines, generators and transmissions.  Each one has its own unique method of identification.  Select the brand you need for more information.

Chrysler inboard & I/O engines usually require the engine model/cubic inches, year and/or serial number in order to identify parts. The engine model and serial number are usually found on an identification plate located on the top or at the rear of the engine.

The engine model and/or engine serial numbers are key to locating parts for Chrysler and Force outboard motors. This information can be found on a riveted tag on the starboard side of the transom bracket (on the outside of the boat). The serial number will either be 8-digits beginning with a 0 or 1, followed by a letter and six numbers, OR it will be the horsepower of the motor followed by a series of letters and numbers.

Crusader engines usually require the engine model and engine serial number to identify parts. This info is usually found on an identification plate located on the engine block, valve cover, or flywheel housing.

Read more about identifying Crusader engines...

The engine serial number is needed to locate parts on Indmar marine engines. On older engines, the serial number can be found stamped into the block by the bottom mount starter. On newer engines, the serial number is located on various stickers including on the valve cover, ECM, and the raw water pump. The serial number is also found stamped into the block on newer engines as well.

Johnson & Evinrude outboard motors usually require the engine model number in order to identify the proper replacement parts. The engine year and horsepower also help verify the items needed, though the engine model number will automatically direct us to the engine year and model. The engine model number is found on the transom clamp of the outboard on the outside of the transom/boat. The model number usually starts with a letter, followed by numbers (often the horsepower) and finally another sequence of letters.

Read more about identifying Evinrude & Johnson outboards...

 Depending on the parts requested, either the engine serial number, transom serial number, or drive serial number is needed to look up parts for Mercruiser engines, transoms, and drives. The engine and drive models (Alpha, Alpha Gen II, Bravo, etc.) also help in identifying many fast moving items, although serial numbers are required in most instances for us to assure the correct parts for your application.

The engine model and engine serial numbers are key to locating parts for Mercury and Mariner outboard motors. This information can be found on a riveted tag on the starboard side of the transom bracket (on the outside of the boat). The serial number will usually start with a 0 or 1, followed by a letter, then followed by 6 numbers.

Read more about identifying Mercury outboards...

OMC I/O engines require the model number of the engine. The model identification plate can be found on the engine valve cover. The model number usually starts with 3 numbers followed by a sequence of letters. Sometimes the engine size (liters) and year of the engine can be used to identify replacement parts. For looking up OMC sterndrive parts, the identification plate is located on the port side of the sterndrive just above the cavitation plate.

To identify the correct parts for your Onan generator, the generator model number and spec letter are needed. Sometimes the generator serial number will be needed. This information is located on a nameplate on the generator itself.

PCM engines generally require the engine model number and serial number to locate replacement parts. On older motors, this information is located on a tag/plate near the back of the engine. On newer motors, this information may be found on a plate or sticker in different locations on the engine. These locations include the intake manifold, the valve covers, or on the side of the oil pan.

Suzuki outboard engines require the model number to locate replacement parts.  On engines manufactured after 2011, the serial number is also helpful and will indicate the model year. The model and serial numbers for Suzuki outboards are usually found on an identification tag that is located on the port side of the transom mounting bracket of the engine. If the serial number is not legible, it can also be found stamped into the cylinder block of the engine.

Read more about identifying Suzuki outboards...

The model identification tag for Universal engines is found on the exhaust manifold of the engine. There is also a Kubota engine model number embossed into the block, usually near or below the injector pump.

Westerbeke generators usually require the model number of the generator to identify the parts needed. This information is usually located on the backend/armature of the generator or sometimes stamped on the Westerbeke plate located on the exhaust manifold. The generator model number starts with the kilowatt rating of the generator, followed by a sequence of letters. Take note to locate the 60hz US rating model number and not the 50hz international rating model number.

Borg Warner Velvet Drive transmissions and V-Drives require the model number and ratio in order to identify replacement parts. This information is usually found on a tag or plate located near the dipstick tube of the transmission.

 Volvo Penta engines require the engine model number and often the engine serial number to find replacement parts. This information is found on a riveted metal plate and in most cases, on a decal on all Volvo Penta engines. For properly identifying replacement sterndrive parts, the drive model and/or serial numbers are needed. On Volvo Penta drives, this information is usually located on a tag/plate on the upper gear housing of the sterndrive.

The engine model number, primary identification number, and the serial number are needed to correctly locate parts for Yamaha outboards. This information is found printed on a rectangular sticker located on the port side mounting bracket of the motor. The top field of this sticker is the engine model number. The second row, which includes 3 separate fields, is the primary identification number. It is unique to each individual engine. The 3rd field of the primary identification number is the engine serial number.

More about identifying Yamaha outboards...

ZF and Hurth transmissions require the model, spec, ratio, and serial numbers to look up parts. This information is found on a stamped tag, usually located on the gear case above the pump/control block.