63D-44316-00 Yamaha Water Pump Gasket | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Water Pump Gasket - Part Number: 63D-44316-00-00

A genuine Yamaha OEM water pump gasket used in Yamaha 63D-series water pump assemblies. This gasket seals the water pump housing and plate area during cooling-system service.

⚙️ Key Features

• Genuine Yamaha OEM water pump gasket
• Correct Yamaha part number 63D-44316-00-00
• Included in Yamaha 63D-W0078-03 water pump repair kit
• Used with 63D-44311-00 housing and 63D-44322-00 cartridge insert
• Direct sealing gasket for Yamaha lower-unit water pump service

🚤 Compatibility

Commonly used on

• Yamaha 63D-series water pump assemblies
• Yamaha lower-unit cooling systems using 63D-W0078-03 repair kit

Typically suits

• Engine models:
• Yamaha C40 water pump gasket applications
• Yamaha P40 water pump gasket applications
• Yamaha 40V / 40Y water pump gasket applications
• Yamaha F40 four-stroke water pump gasket applications
• Yamaha 50H water pump gasket applications
• Yamaha F50 four-stroke water pump gasket applications
• Yamaha F60 four-stroke water pump gasket applications
• Yamaha T50 / FT50 / T60 / FT60 high-thrust water pump gasket applications
• HP Range: commonly 40HP - 60HP where specified
• Engine Type: Yamaha outboard lower-unit cooling system
• Component Type: Water pump gasket

🔌 Function

The gasket seals the water pump assembly so the pump can maintain cooling-water pressure without internal bypass or external leakage.

⚠️ Common Signs of Failure

• Water pump removed for impeller service
• Gasket torn during disassembly
• Weak cooling flow after pump rebuild
• Salt or debris damage around pump base
• Engine overheating due to water pump leakage
• Required replacement during water pump service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 63D-44316-00-00 Yamaha water pump gasket reference
• 63D-44316-00 short Yamaha gasket format
• 63D-W0078-03-00 related complete water pump repair kit
• 63D-W0078-01-00 related earlier water pump repair kit
• 63D-W0078-00-00 related earlier water pump repair kit

OEM / Related Numbers

• 63D-44316-00-00
• 63D-44316-00
• 63D443160000
• 63D4431600
• 63D-W0078-03-00
• 63D-W0078-03
• 63D-W0078-01-00
• 63D-W0078-01
• 63D-W0078-00-00
• 63D-W0078-00

Aftermarket / Verified Equivalents

• Aftermarket / Sierra-style reference: 18-0483
• Included in Sierra water pump repair kit: 18-3434
• Included in Sierra water pump kit with housing: 18-3415
• Included in aftermarket water pump kit: OSWK63D
• Included in Recmar service kit: REC63D-W0078-01
• Standalone gasket should be matched directly to OEM 63D-44316-00-00

📦 Condition

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