Engine Family
MerCruiser® 7.4L MPI / 454 Replacement Parts
Shop aftermarket EFI, engine-management and fuel-system replacement components for selected MerCruiser® 7.4L MPI / 454 marine engine applications.
Shop 7.4L MPI / 454 Parts
Browse by component category for your MerCruiser® 7.4L MPI / 454 engine.
Available 7.4L MPI / 454 Replacement Parts
Products are added as they are sourced and verified. Check back as the catalog grows.
DMP-FI-7400
MerCruiser 7.4L MPI Fuel Injector
Fits: MerCruiser 7.4L MPI / 454
DMP-MAP-7400
MerCruiser 7.4L MAP Sensor
Fits: MerCruiser 7.4L MPI / 454
DMP-IAC-7400
MerCruiser 7.4L IAC Valve
Fits: MerCruiser 7.4L MPI / 454
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® 7.4L MPI / 454?
When servicing EFI or fuel-system components on your 7.4L MPI / 454, 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® 7.4L MPI / 454 Parts & Technical Resources
Reference guides and diagnostic resources for the 7.4L MPI / 454. Content is added as it is developed and verified.