Engine Family
MerCruiser® 502 Magnum MPI Replacement Parts
The MerCruiser® 502 Magnum MPI is a high-displacement V8 gasoline marine engine. Verify your engine model and serial number before ordering any replacement part — injector applications vary across production years.
Shop 502 Magnum MPI Parts
Browse by component category for your MerCruiser® 502 Magnum MPI engine.
Available 502 Magnum MPI Replacement Parts
Products are added as they are sourced and verified.
DMP-FI-502MPI
MerCruiser 502 Magnum MPI Fuel Injector
Fits: MerCruiser 502 Magnum MPI
Know Your OEM Part Number?
If you have an existing MerCruiser® OEM part number, search below to find available aftermarket replacement options. OEM part numbers can typically be found in your engine service manual, on the original component, or through your dealer.
Servicing Your MerCruiser® 502 Magnum MPI?
When servicing EFI or fuel-system components on your 502 Magnum MPI, it is generally good practice to inspect related sensors, seals and fuel-system components at the same time. Replacing worn seals or a failing sensor alongside a primary repair can help avoid a return visit.
Customers Replacing This Part Also Consider
Related part suggestions will appear here once products are verified and listed.
MerCruiser® 502 Magnum MPI Parts & Technical Resources
Reference guides and diagnostic resources. Content is added as it is developed and verified.