350 MPI / 5.7L — FUEL INJECTORS
Which Fuel Injector Fits My MerCruiser® 350 MPI / 5.7L?
The MerCruiser® 350 MPI / 5.7L family spans multiple production years, engine variants, and engine-management generations. Different variants may use different fuel injectors — and the same displacement may use a different injector depending on production period. Use this guide to identify the correct injector for your specific engine before ordering.
Find Your Engine Application
Match your engine model, year, and serial range below, then select the row to view the correct injector.
| Engine Application | Years | Serial Range | Correct Injector |
|---|---|---|---|
| 350 MAG MPI | Verification in progress | Verification in progress | 12609192 |
| 350 MAG MPI Bravo | Verification in progress | Verification in progress | 12609192 |
| 350 Magnum MPI | 1998–2001 | Verification in progress | 861260T |
| 5.7L MPI (additional earlier variants) | Verification in progress | Verification in progress | Verification in progress |
| 350 Mag MPI — 350 V8 (ECM-555) | 2002–2007 | 0M300000–1A064824 | 885176 |
| 350 Mag MPI (ECM-555 transition) | 2007–2008 | 1A064825 and up | 879312003 |
| 350 Mag MPI DTS (ECM-555 transition) | 2007–2008 | 1A064825 and up | 879312003 |
| 350 Mag MPI Horizon (ECM-555 transition) | 2007 | 1A064825–1A299999 | 879312003 |
| 350 Mag MPI Horizon MIE (ECM-555 transition) | 2007 | 1A064825–1A089999 | 879312003 |
| 350 Mag MPI MIE (ECM-555 transition) | 2007 | 1A064825–1A089999 | 879312003 |
| 5.7L MPI Horizon MIE (ECM-555 transition) | 2008 | 1A090000 and up | 879312003 |
| 5.7L MPI MIE (ECM-555 transition) | 2008 | 1A090000 and up | 879312003 |
350 MAG MPI
Verification in progress
Serial Range
Verification in progress
Correct Fuel Injector
12609192350 MAG MPI Bravo
Verification in progress
Serial Range
Verification in progress
Correct Fuel Injector
12609192350 Magnum MPI
1998–2001
Serial Range
Verification in progress
Correct Fuel Injector
861260T5.7L MPI (additional earlier variants)
Verification in progress
Serial Range
Verification in progress
Correct Fuel Injector
Verification in progress350 Mag MPI — 350 V8 (ECM-555)
2002–2007
Serial Range
0M300000–1A064824
Correct Fuel Injector
885176350 Mag MPI (ECM-555 transition)
2007–2008
Serial Range
1A064825 and up
Correct Fuel Injector
879312003350 Mag MPI DTS (ECM-555 transition)
2007–2008
Serial Range
1A064825 and up
Correct Fuel Injector
879312003350 Mag MPI Horizon (ECM-555 transition)
2007
Serial Range
1A064825–1A299999
Correct Fuel Injector
879312003350 Mag MPI Horizon MIE (ECM-555 transition)
2007
Serial Range
1A064825–1A089999
Correct Fuel Injector
879312003350 Mag MPI MIE (ECM-555 transition)
2007
Serial Range
1A064825–1A089999
Correct Fuel Injector
8793120035.7L MPI Horizon MIE (ECM-555 transition)
2008
Serial Range
1A090000 and up
Correct Fuel Injector
8793120035.7L MPI MIE (ECM-555 transition)
2008
Serial Range
1A090000 and up
Correct Fuel Injector
879312003Already Know Your Injector or OEM Number?
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Related EFI Components
Related EFI components vary by engine application. Use the injector family identified above to view the matching components for your engine.
Not sure which part you need?
Model year alone is not enough. Confirm all four of the following before selecting a replacement injector.
Exact engine model
Confirm the full engine model designation from your data plate — for example, 350 MAG MPI, 350 MAG MPI Bravo, or 5.7L MPI. Similar names can indicate different injector families.
Engine serial number
Locate the serial number on your engine data plate. Serial ranges are the most reliable way to confirm which injector was factory-fitted to your specific engine.
Existing OEM or injector number
If you have the OEM part number from the original injector or a service manual, this is the most direct identification method. Cross-reference it against the table below.
Physical injector characteristics
Connector type, body length, O-ring configuration and any visible markings or colour bands can help confirm the injector family. Use physical characteristics together with OEM/serial verification, not as the sole method.
Have Your OEM Part Number?
Search your existing MerCruiser® OEM injector part number to find available aftermarket replacement options.