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MerCruiser 3.7L / 3.7LX / 470 Engine Parts

MerCruiser

3.7L / 470 engine parts

3.7L / 3.7LX / 470

Browse parts for the Mercury-built 224-cubic-inch four-cylinder MerCruiser family, including 470, 3.7L and 3.7LX. Confirm the engine identity, serial number and installed carburetor before selecting service parts.

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Service & maintenance

Start your parts search

Collections are browsing aids and include parts for other engines. Confirm the complete model, serial number and exact assembly before ordering.

Engine maintenance collectionBrowse collectionEngine maintenanceBrowse Mercury and MerCruiser service and maintenance parts.Browse collection Cooling system collectionBrowse collectionCooling systemBrowse pumps and cooling components; match the exact assembly.Browse collection Fuel system collectionBrowse collectionFuel systemBrowse fuel-system components; confirm installed equipment.Browse collection

Browse by system

Find your service category

These broader collections help you browse. A category link does not confirm engine-specific compatibility.

MaintenanceBrowse the maintenance collectionBrowse category FiltersBrowse the filters collectionBrowse category FuelBrowse the fuel collectionBrowse category Ignition & electricalBrowse the ignition & electrical collectionBrowse category CoolingBrowse the cooling collectionBrowse category Belts & hosesBrowse the belts & hoses collectionBrowse category Gaskets & sealsBrowse the gaskets & seals collectionBrowse category Drive componentsBrowse the drive components collectionBrowse category

Before selecting parts

Identify the engine you have

Use the complete identification to select the correct generation, diagram and replacement part.

224-cubic-inch identity

Confirm the four-cylinder engine identity. Older horsepower badges can refer to different engine families and are not sufficient for a catalogue selection.

3.7L / 3.7LX carburetion

The documented parts-guide applications distinguish two-barrel 3.7L and four-barrel 3.7LX versions. Match the exact carburetor and engine serial number.

Model & installation

470 and related four-cylinder model names have serial-specific entries. Identify the installed cooling, ignition, drive and transom equipment.

GM 2.5L/120, 3.0L/140, inline-six 165 and GM V6 engines are distinct families. A 165 badge alone does not establish this four-cylinder application.

Send the complete engine-plate details and clear old-part photos. Match the installed fuel and cooling equipment, and include the separate drive or marine-gear plate when asking about those assemblies.

Mercury official parts catalogue Find your Mercury owner's manual

Documented installations

Boat examples

These examples describe documented engine options or installations. Boats may have been repowered or modified; an example does not establish present-day parts compatibility.

Glastron V-197, 1984 handbook

The factory handbook lists a MerCruiser 470 option and separately identifies the 470 as a 224-cubic-inch four-cylinder engine.

Serial number help

Request a parts check

Send the Parts Desk the complete engine model and serial number, the OEM part number if known, and clear photos of the identification plate and old part. Include the installed fuel and cooling equipment when asking about those systems.

Include in your message

  • Complete engine model, suffix and serial number
  • OEM part number, if known
  • Identification-plate and old-part photos
  • Drive, transom or marine-gear identification for those parts

Parts Desk

Help before you order

Send your details through our contact page. The Parts Desk can help check the exact application before you select a replacement.

Ask the Parts Desk