EFI / TBI — FUEL INJECTORS
Which Fuel Injector Fits My MerCruiser® EFI / TBI Engine?
Earlier MerCruiser® EFI and throttle-body injection engines use a different injector architecture from later MPI and ECM-555 engines. Verify your engine model, serial number, and existing OEM injector before ordering.
350 / 5.7L — Select Your Generation
Before You Order — Verify These 5 Things
Confirm the full engine model designation from your data plate — for example, 4.3L EFI (GEN+), 5.7L EFI, or 350 MAG EFI. EFI/TBI and MPI engines of the same displacement use different injector systems.
Confirm the model year from your engine data plate or registration documents. Serial ranges are year-specific for EFI/TBI applications.
Locate the serial number on your engine data plate. Serial ranges are the most reliable way to confirm which injector kit was factory-fitted to your specific engine.
If you have the OEM kit number (e.g. 852956A1) or the individual injector marking (e.g. 17104288) from the original injector or a service manual, this is the most direct identification method.
Confirm the throttle-body configuration — single TBI, dual TBI, or multi-port. TBI injectors are not interchangeable with MPI injectors even on the same engine displacement.
EFI / TBI Injector Selection Guide
The 852956A1 is a Mercury/MerCruiser OEM throttle-body injector kit. Motor Man identifies the individual injector marking as 17104288 and supplies the replacement as a matched pair of 2 TBI injectors. The following application rows are based on Mercury/MerCruiser OEM where-used data. Serial ranges are exact as supplied — do not generalise across variants.
| Engine Model | Years | Serial Range | OEM Kit | Injector Marking | Replacement | Status |
|---|---|---|---|---|---|---|
| 4.3L EFI (GEN+) TBI — GM 262 V6 | Verification in Progress | 0L012009–0L618999 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
| 4.3L EFI (GEN+) TBI — GM 262 V6 | Verification in Progress | 0L619000–0M322780 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
| 5.0L EFI — GM 305 V8 | 1998 | 0L012052–0L339999 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
| 5.0L EFI — GM 305 V8 | 1999–2001 | 0L331631–0M299999 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
| 5.7L EFI — GM 350 V8 | 1998 | 0L010035–0L339999 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
| 5.7L EFI — GM 350 V8 | 1999–2001 | 0L325977–0M299999 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
| 262 MAG TBI (GEN+) | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 350 MAG EFI Ski | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 350 MAG Alpha EFI (GEN+) | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 5.7L EFI MIE | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 5.7L Alpha EFI TBI | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 5.7L Bravo EFI TBI | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 5.7L EFI 2-BBL TBI | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 5.7LX EFI 4-BBL TBI | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 5.7LX Bravo EFI (GEN+) | Verification in Progress | Verification in Progress | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | In Progress |
| 7.4LX TBI — GM 454 V8 | 1996–1997 | 0F820000–0K999999 | 852956A1 | 17104288 (specialist cross-reference) | 852956A1 Page | Verified |
Have Your OEM Part Number?
Search your existing MerCruiser® OEM injector kit number or individual injector marking to find available aftermarket replacement options.