880890T1 Mercury Fuel Pump | Genuine Used Part

🔧 Product Description

Genuine Mercury / Mariner 75HP-115HP FourStroke Low-Pressure Fuel Pump - Part Number: 880890T1

A genuine Mercury low-pressure mechanical fuel pump for Yamaha-derived Mercury and Mariner inline-four FourStroke outboards. It transfers fuel from the boat supply into the vapour separator before the electric high-pressure pump feeds the EFI system or carburettors.

⚙️ Key Features

• Genuine Mercury / Mariner OEM lift pump
• Correct part number 880890T1
• Used on Yamaha-derived 75HP-115HP FourStroke engines
• Crosses to Yamaha 68V and 6D8 pump families
• Multiple verified aftermarket replacements available

🚤 Compatibility

• Mercury / Mariner 75HP and 90HP carburetted FourStroke - serial 0G960500 to 0T800999
• Mercury / Mariner 75HP and 90HP carburetted FourStroke - serial 0T801000 to 1B226999
• The pump is specifically documented from serial 0T409000 onward within applicable carburetted families
• Mercury 115HP EFI FourStroke USA - serial 0T178500 to 1B366822
• Selected 75HP, 80HP, 90HP, 100HP and 115HP Yamaha-derived EFI FourStroke variants using the corresponding pump assembly
• Exact fitment follows the serial-number fuel-pump or vapour-separator diagram

🔌 Function

The pump supplies low-pressure fuel to the vapour separator so the high-pressure EFI pump or downstream carburettor system receives a continuous supply.

⚠️ Common Signs of Failure

• Engine starts then stalls
• Fuel pressure drops under load
• High-pressure pump becomes noisy
• Primer bulb must be pumped repeatedly
• Diaphragm or check valves fail
• Fuel or pulse hoses leak

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 880890T1 is the documented Mercury service reference
• 880980A02 is a related Mercury complete-pump reference
• Yamaha 68V-24410-00-00, 6D8-24410-00 and 6D8-24410-10 are cross-brand OEM references for compatible engine families
• Supersession and interchange must follow the Mercury serial-number catalogue

OEM / Related Numbers

• 880890T1
• 880980A02
• Yamaha 68V-24410-00-00
• Yamaha 6D8-24410-00
• Yamaha 6D8-24410-10
• Related pump gasket, pulse hose and vapour-separator fuel line

Aftermarket / Verified Equivalents

• OSFP880
• Fuel Pump Factory FP-1042
• JLM aftermarket low-pressure pump
• SeaSierra replacement pump
• Recmar replacement under the Yamaha 68V / 6D8 cross-reference

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated