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MerCruiser 496 MAG / 496 MAG HO / 8.1L Engine Parts

MerCruiser

496 MAG engine parts

496 MAG / 496 MAG HO / 8.1L

Browse parts for MerCruiser 496 MAG and 496 MAG HO 8.1L V8 engines. Preserve the full model, engine serial number and sterndrive or inboard designation when 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.

MAG / HO versions

The documented 496 MAG and HO sterndrive variants have distinct specifications. Identify base or HO together with the exact serial number.

Inboard & control distinctions

8.1S Horizon and HO inboard installations are separately identified. Keep any DTS, SeaCore or emissions designation with the full engine name.

Cooling & propulsion

Match fuel, cooling, ignition and exhaust equipment to the actual installation. Drive, transom and marine-gear assemblies need their own plates.

Legacy 502/8.2L, later 8.2 MAG/HO and Volvo Penta 8.1L engines require separate application checks.

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.

2005 Cobalt 220

Documented options include 496 MAG MPI at 375 hp and 496 MAG HO at 425 hp with Bravo packages.

2006 Sea Ray 260 Sundancer

The factory sheet lists a 496 Magnum, 375 hp Bravo III 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