Mercury 75-150HP EFI / 4.5L-6.2L MPI Fuel Pump 8M0245916

Mercury Outboard Fitment

MerCruiser 4.5L Sterndrive Fitment

MerCruiser 6.2L Sterndrive Fitment

Mercury TowSports Fitment

Mercury MIE Inboard Fitment

OEM & Cross Reference Numbers

Fuel Supply Module Service Parts

The high-pressure pump is only one part of the Fuel Supply Module. When diagnosing or rebuilding an FSM, inspect the low-pressure fuel pump as well as the internal seals. A weak low-pressure pump can restrict fuel supply to the high-pressure side, while disturbed or deteriorated seals can create leaks after the module is serviced.

Mercury 8M0245917 Low-Pressure Fuel Pump

The low-pressure fuel pump used with compatible Mercury Fuel Supply Module applications. This pump supplies fuel to the FSM so the high-pressure side has an adequate fuel supply.

View Mercury 8M0245917 Low-Pressure Pump

Mercury Fuel Supply Module Seal Kit - 7333

Opening the Fuel Supply Module to replace a pump? Inspect the module seals and O-rings while it is apart. The 7333 FSM Seal Kit provides the service seals for compatible Mercury FSM applications.

View Mercury FSM Seal Kit

What This Part is Used For

The Mercury Fuel Supply Module receives fuel from the boat's fuel system and supplies fuel to the engine at the pressures required for electronic fuel injection. Inside the FSM, the low-pressure and high-pressure pumps perform different jobs.

The 8M0245916 high-pressure fuel pump supplies the pressure required on the high-pressure side of the EFI system. If the pump becomes weak or fails, the engine may not maintain adequate fuel pressure under acceleration or load.

High-Pressure vs. Low-Pressure FSM Pump

Common Signs of High-Pressure Fuel Pump Problems

• Hard starting or extended cranking
• Engine starts but cannot maintain proper fuel pressure
• Loss of power during acceleration
• Hesitation under heavy engine load
• Engine may run normally at low RPM but lose power at higher RPM
• Fuel-pressure testing indicates insufficient high-side pressure
• High-pressure pump fails electrical or pressure testing

Why Inspect the Entire FSM?

A high-pressure fuel problem does not automatically mean the high-pressure pump itself has failed. The low-pressure side must provide enough fuel to keep the FSM supplied. A weak 8M0245917 low-pressure pump can therefore cause symptoms that resemble high-pressure pump failure.

Test fuel pressure and fuel delivery before replacing components. If the FSM must be opened, inspect the low-pressure pump, electrical connections, internal fuel passages, and seals at the same time.

Key Features and Benefits

• Mercury high-pressure Fuel Supply Module pump
• Mercury OEM part number 8M0245916
• Used on select 65-150HP EFI outboards
• Fits select 75, 80, 90, 100, 105 Jet, 115, 135, and 150HP engines
• Applications include SeaPro and Pro XS models
• Fits select 4.5L MPI MerCruiser Alpha / Bravo applications
• Fits select 6.2L MPI 300HP and 350HP MerCruiser applications
• Fits select 6.2L MPI TowSports 320HP and 370HP engines
• Fits select 6.2L MIE 300HP, 350HP, and Jet 370 applications
• 8M0245917 low-pressure pump linked above
• FSM seal kit linked above

FAQ

What is Mercury 8M0245916?
8M0245916 is a high-pressure electric fuel pump used inside compatible Mercury Fuel Supply Module assemblies.

Is 8M0245916 the high-pressure or low-pressure pump?
It is the high-pressure pump. The associated low-pressure pump is Mercury 8M0245917, which is linked above.

Does 8M0245916 fit Mercury 75-115HP outboards?
Yes. Verified applications include select 75, 80, 90, 100, and 115HP EFI models beginning with serial number 2B095049, plus SeaPro and Jet variants listed in the fitment chart.

Does it fit Mercury 115 Pro XS?
Yes. Verified fitment includes the 115HP EFI Pro XS beginning with serial number 2B225488.

Does it fit Mercury 150HP EFI?
Yes. Verified fitment includes standard 150HP EFI beginning at 1B905505, 150HP EFI SeaPro beginning at 2B139139, and 150HP EFI Pro XS beginning at 2B550139.

Does it fit MerCruiser 4.5L engines?
Yes. Verified applications include select 4.5L MPI 200HP and 250HP Alpha / Bravo engines beginning at serial number 2A530778.

Does it fit MerCruiser 6.2L engines?
Yes. The supplied Mercury fitment includes 6.2L MPI 300HP and 350HP sterndrive engines beginning at serial number 2A530776, along with MIE and TowSports versions shown above.

What low-pressure pump goes with this high-pressure pump?
Mercury 8M0245917 is the low-pressure fuel pump linked above for compatible FSM applications.

Should I replace the FSM seals when changing the pump?
Inspect the seals whenever the Fuel Supply Module is opened. The 7333 FSM Seal Kit is linked above for compatible applications.

How do I verify fitment?
Use the engine model and serial number and confirm that the Fuel Supply Module parts diagram calls for Mercury 8M0245916. Do not select the pump based on horsepower alone.

Searchable Terms

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