688-44311-01 Yamaha Water Pump Housing | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Lower-Unit Water Pump Housing - Part Number: 688-44311-01

A genuine Yamaha water-pump housing for selected 60HP to 90HP two-stroke outboards.

The housing surrounds the impeller and directs water from the lower-unit inlet into the engine cooling tube. A smooth, correctly shaped internal chamber is essential for maintaining pump suction and pressure.

⚙️ Key Features

• Genuine Yamaha OEM water-pump housing

• Correct Yamaha part number 688-44311-01

• Used on Yamaha 60HP to 90HP two-stroke gearcases

• Replaces the earlier 688-44311-00 housing

• Cross-references with Sierra, Recmar and SEI complete-pump alternatives

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 688-44311-01 → Supersedes 688-44311-00

• 688-44311-00 earlier Yamaha water-pump housing reference

OEM / Related Numbers:

• 688-44311-01

• 688-44311-01-00

• 688443110100

• 688-44311-00

• 688-44352-03 related impeller

• 688-44315-A0 related lower water-pump gasket

• 688-44316-A0 related upper water-pump gasket

• 692-W0078-A0 related water-pump kit

Aftermarket / Verified Equivalents:

• Sierra: 18-3171

• Recmar: REC688-44311-01

• SEI Marine: 96-498-01FK complete kit with housing

• PROMT / aftermarket complete housing kits replacing 688-44311-01

🚤 Compatibility

Commonly used on:

• Yamaha mid-range two-stroke lower-unit water pumps

Typically suits:

• Engine models:

• Yamaha 60HP two-stroke

• Yamaha 60F two-stroke

• Yamaha 70HP two-stroke from approximately 2004 onward

• Yamaha 70B two-stroke

• Yamaha C75

• Yamaha E75

• Yamaha P75

• Yamaha C85 - approximately 1992-1995

• Yamaha 85A

• Yamaha 90HP two-stroke

• Yamaha 90A

• HP Range: 60HP - 90HP

• Engine Type: Yamaha carburetted two-stroke outboard

• Year Range: Approximately 1984 onward, dependent on gearcase

🔌 Function

The housing encloses the impeller and forms the pumping chamber needed to draw and pressurise cooling water.

Common signs of failure:

• Housing interior is scored or melted

• Weak or absent tell-tale stream

• Engine overheats despite a new impeller

• Housing is cracked, corroded or distorted

• Water leaks around the housing outlet or base

📦 Condition

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging