This is a professionally remanufactured set of genuine OEM Bosch 4-hole upgraded marine fuel injectors designed as a direct-fit replacement for Mercury Marine / MerCruiser 879312003 injectors.
 
These upgraded injectors maintain the proper fitment and operating characteristics of the original injectors while utilizing a newer Bosch multi-hole disc nozzle design for improved fuel atomization, smoother idle quality, and more consistent fuel delivery.
 
Installs with no modifications required.
 
Vehicle Fitment
Compatible with select Mercury Marine / MerCruiser MPI applications including:
 
4.3L MPI
4.3L MPI Alpha
4.3L MPI Bravo
4.3L MPI EC

5.0L MPI
5.0L MPI Alpha
5.0L MPI Bravo
5.0L MPI EC

5.7L MPI / 350 MAG
350 MAG MPI Alpha / Bravo
350 MAG MPI Horizon
5.7L MPI Horizon MIE
5.7L MPI TowSport
5.7L MPI Ski

6.2L MPI
MX 6.2L MPI Horizon
6.2L MPI Horizon MIE
6.2L MPI MIE EC

Performance Applications
377 MAG MPI
383 MAG Stroker
385 Performance Tuned
 
Please verify your original injector part number before ordering, as marine applications may vary by engine serial number and production configuration.
 
Replaces Part Numbers
Mercury Marine 879312003
GM 12567905
Mercury 885176
MAR102-8N
M02081X8
 
Upgrade Features
Genuine OEM Bosch upgraded injectors
4-hole disc nozzle upgrade
Improved fuel atomization
More consistent spray pattern
Smoother idle and throttle response
Flow matched and professionally tested
Direct-fit replacement
Corrosion-resistant marine injector design