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MerCruiser 7.4L / 454 Carbureted Engine Parts

MerCruiser

7.4L / 454 carbureted parts

7.4L / 454 Carbureted

Find service parts for carbureted MerCruiser 7.4L and 454-cubic-inch V8 engines. Identify the full standard or Magnum designation, serial number, carburetor and ignition system before ordering.

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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.

7.4L / 454 Magnum

Standard 7.4L and carbureted 454 Magnum engines have separate model identities and specifications. A 454 displacement marking is insufficient for a parts match.

Fuel, ignition & cooling

Match the installed carburetor, distributor, cooling and exhaust components to the exact production version and serial-specific catalogue.

MCM / MIE installation

MCM sterndrive and MIE inboard packages require separate equipment selection. Identify the drive or marine gear independently.

7.4 MPI, 7.4LX EFI/MPI, 454 MAG EFI/MPI, 502/8.2L and 496/8.1L require their own exact catalogue selections.

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.

1995 Cobalt 220 / 272

The factory table lists 7.4L, 300 hp Bravo I/III packages and a separate 454 MAG, 350 hp Bravo I option.

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