6CJ-44315-00 Yamaha Water Pump Gasket | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Lower Water Pump Gasket - Part Number: 6CJ-44315-00

A genuine Yamaha lower water-pump gasket for selected F40G and F70A four-stroke outboards.

The gasket seals the water-pump plate and housing assembly to the lower unit, preventing cooling water from escaping beneath the impeller chamber.

⚙️ Key Features

• Genuine Yamaha OEM water-pump gasket
• Correct Yamaha part number 6CJ-44315-00
• Lower pump-plate sealing position
• Used in Yamaha F40G and F70A water-pump assemblies
• Included in complete 6CJ-series water-pump service kits

🚤 Compatibility

Commonly used on

• Yamaha F40G and F70A lower-unit water pumps

Typically suits

• Engine models:
• Yamaha F40G
• Yamaha F40GET
• Yamaha F70A
• Yamaha F70AET
• Yamaha F70AETL
• Yamaha F70LA
• Yamaha F70LA2
• HP Range: 40HP - 70HP
• Engine Type: Yamaha EFI four-stroke outboard
• Year Range: Approximately 2010 onward

🔌 Function

The gasket seals beneath the water-pump assembly so the impeller can draw and pressurise cooling water without leakage around the pump plate.

⚠️ Common Signs of Failure

• Weak cooling-water flow after pump servicing
• Engine overheats despite a serviceable impeller
• Water leaks beneath the pump plate
• Gasket tears during disassembly
• Pump components will not sit flat because of old gasket material

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6CJ-44315-00 current Yamaha OEM service reference

OEM / Related Numbers

• 6CJ-44315-00
• 6CJ-44315-00-00
• 6CJ443150000
• 6CJ-44316-00 related water-pump base gasket
• 6CJ-44324-00 related cartridge gasket
• 6CJ-W0078-00 related water-pump repair kit
• 6CJ-W0078-01 later repair-kit reference

Aftermarket / Verified Equivalents

• Sea Sierra Marine: 6CJ-44315-00 direct-replacement gasket
• Included in Sierra: 18-3494 water-pump repair kit
• Included in aftermarket 6CJ-W0078-00 / 6CJ-W0078-01 pump kits

📦 Condition

• Genuine Yamaha part
• Brand new
• Supplied in original or equivalent packaging