This is an aftermarket Fuel Pressure Regulator Kit Compatible for Mercury Mariner MerCruiser Engine
Part Number: 861126A 1, 861126A1, 710-861126A 1
Compatible for MerCruiser 4.3L, 5.0L, 5.7L and 6.2L MPI, V6 & V8 Engine
Compatible for MerCruiser Inboard engines with ECM 555 and various MerCruiser 7.4L MPI (L29), 454 Magnum MPI, 496 Magnum and HO, 500 EFI and 8.1S and HO engines