98766 14430-C1 14360A78 Mercury Low Pressure Fuel Pump | Genuine Used Part

🔧 Product Description

Genuine Mercury / Mariner Diaphragm Fuel Pump Assembly - Part Numbers: 98766-C1 / 14430-C1 / 14360A78

A genuine used crankcase-pulse-operated fuel pump for selected Mercury and Mariner two-stroke outboards.

The supplied 98766 and 14430-C1 numbers are casting or component-body references. The complete current Mercury service assembly is 14360A78, which replaces a long series of earlier pump assemblies used across three-cylinder, four-cylinder, V6, EFI and DFI two-stroke engines.

⚙️ Key Features

• Genuine Mercury / Mariner diaphragm fuel pump

• Casting references 98766-C1 and 14430-C1

• Current service assembly 14360A78

• Engine-pulse-operated low-pressure design

• Rebuild and complete aftermarket pump options available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 14360A78 → Supersedes 14360A73

• 14360A78 → Supersedes 14360A71

• 14360A78 → Supersedes 14360A50

• 14360A78 → Supersedes 14360A43

• 14360A78 → Supersedes 14360A41

• 14360A78 → Supersedes 14360A16 and 14360A15

• 14360A78 → Also replaces selected 99357A4 pump assemblies

OEM / Related Numbers:

• 98766

• 98766-C1

• 14430-C1

• 14360A15

• 14360A16

• 14360A41

• 14360A43

• 14360A50

• 14360A71

• 14360A73

• 14360A78

• 99357A4

• 857005A1 related diaphragm and check-valve service kit

Aftermarket / Verified Equivalents:

• Niche Industries: CFP2262A / C-FPA-0040

• JLM Marine replacement pump for 14360A78

• DAFGSEA / Z789 replacement pump

• Generic 98766-C1 / 14360A78 complete pump assemblies

• Sierra: 18-7817 diaphragm kit for related Mercury pump assemblies

• Aftermarket rebuild kits must match the pump-body configuration

🚤 Compatibility

Commonly used on:

• Mercury and Mariner carburetted two-stroke outboards

• EFI and DFI engines using the same low-pressure pulse-pump family

• Standard propeller and Jet models

Confirmed Mercury serial applications include:

• 35 Jet: 0G590000 through 0T408999

• 30HP-45HP three-cylinder: 0G055314 through 0T979999

• 50HP-60HP three-cylinder: 0B122930 through 0T979999

• 75HP-90HP three-cylinder: 0D283222 through 0T979999

• 45 Jet and 80 Jet: 0D000750 through 0T979999

Additional commonly catalogued families:

• 100HP, 115HP and 125HP four-cylinder two-strokes

• 135HP through 200HP V6 carburetted and EFI engines

• Selected 225HP, 250HP and 300HP EFI / DFI two-strokes

• Overall HP Range: Selected 30HP - 300HP engines

• Fitment Requirement: Verify the complete Mercury service number and pulse-port layout

🔌 Function

The pump uses crankcase pressure pulses to draw fuel from the boat supply and deliver it to the carburettors, vapour separator or injection system.

Common signs of failure:

• Fuel starvation at higher RPM

• Hard starting or repeated primer-bulb pumping

• Fuel leaking through a damaged diaphragm

• Engine running lean

• Weak or absent fuel flow from the pump outlet

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated