6E5-44315-A0 Yamaha Water Pump Gasket | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Water Pump Base Gasket - Part Number: 6E5-44315-A0

A genuine Yamaha lower-unit water-pump gasket for selected mid- and high-horsepower outboards.

The gasket seals the water-pump base and wear-plate assembly to the gearcase. It prevents cooling water and suction pressure escaping around the pump chamber.

⚙️ Key Features

• Genuine Yamaha OEM water-pump gasket

• Correct current Yamaha part number 6E5-44315-A0

• Supersedes earlier gasket 6E5-44315-00

• Used with the 6E5-series high-horsepower water pump

• Sierra and Recmar replacements available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 6E5-44315-A0 → Supersedes 6E5-44315-00

• 6E5-44315-00 earlier OEM water-pump gasket reference

OEM / Related Numbers:

• 6E5-44315-A0

• 6E5-44315-A0-00

• 6E5-44315-00

• 6E5-44352-01 related impeller

• 6G5-44323-01 related wear plate

• 6E5-W0078-series related water-pump kits

Aftermarket / Verified Equivalents:

• Sierra: 18-0244

• Recmar: REC6E5-44315-A0

• AMS: 6E5-44315-A0 replacement gasket

• Aftermarket Yamaha water-pump gasket: 6E5-44315-A0 replacement

🚤 Compatibility

Commonly used on:

• Yamaha mid- and high-horsepower lower-unit water pumps

• Water-pump assemblies using the 6E5-series impeller and housing

Typically suits:

• Engine models:

• Yamaha 115HP two-stroke

• Yamaha 130HP two-stroke

• Yamaha 150HP two-stroke

• Yamaha 175HP two-stroke

• Yamaha 200HP two-stroke

• Yamaha 225HP two-stroke

• Yamaha 250HP two-stroke

• Yamaha 300HP two-stroke applications using the 6E5 pump family

• Yamaha F115 four-stroke

• Yamaha F150 four-stroke

• Yamaha F200 four-stroke

• Yamaha F225 four-stroke

• Yamaha F250 four-stroke

• Corresponding LF counter-rotation models where the lower-unit diagram specifies 6E5-44315-A0

• HP Range: Approximately 115HP - 300HP

• Engine Type: Yamaha V4 / V6 two-stroke and four-stroke outboard

• Year Range: Approximately 1984 onward, dependent on gearcase and pump configuration

🔌 Function

The gasket seals the pump base so the impeller can draw water through the gearcase intakes and deliver it to the powerhead without pressure loss.

Common signs of failure:

• Weak tell-tale stream

• Engine overheats at idle or under load

• Air enters around the pump base

• Gasket tears during pump disassembly

• Cooling performance remains poor after impeller replacement

📦 Condition

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging