63P-45378-00 Yamaha Nipple | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Hose Nipple - Part Number: 63P-45378-00-00

A genuine Yamaha OEM hose nipple used in Yamaha lower-casing / cooling-water hose connection assemblies. This small fitting provides a secure hose connection point in the gearcase or lower-casing water passage area.

⚙️ Key Features

• Genuine Yamaha OEM hose nipple
• Correct Yamaha part number 63P-45378-00-00
• Used on Yamaha lower-casing drive diagrams
• Cooling hose / water passage connection fitting
• Small but important replacement part for broken, blocked or corroded hose nipples

🚤 Compatibility

Commonly used on

• Yamaha lower-casing drive assemblies
• Yamaha F150 / VF150 hose nipple locations
• Cooling-water / speedometer hose connection points depending on model diagram

Typically suits

• Engine models:
• Yamaha F150AET applications where 63P-45378-00 is specified
• Yamaha F150LA applications where 63P-45378-00 is specified
• Yamaha F150LB applications where specified
• Yamaha F150TLR applications where specified
• Yamaha F150TXR applications where specified
• Yamaha F150XA applications where specified
• Yamaha VF150LA applications where specified
• Yamaha VF150XA applications where specified
• Yamaha 63P-series lower-casing assemblies using this hose nipple
• HP Range: commonly 150HP where specified
• Engine Type: Yamaha four-stroke outboard lower-unit / lower-casing assembly
• Year Range: model-specific F150 / VF150 applications, commonly 2004 onward depending on model
• Component Type: Hose nipple / water passage fitting

🔌 Function

The hose nipple provides a fixed connection point for a small cooling-water or pressure hose so water can flow through the intended passage without leaks or disconnection.

⚠️ Common Signs of Failure

• Broken nipple during lower-unit service
• Corrosion or salt blockage inside fitting
• Hose loose or unable to seal
• Water leakage at hose connection
• Blocked speedometer or water-pressure passage
• Damaged threads in lower casing
• Hose nipple missing after repair work

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 63P-45378-00-00 Yamaha nipple, hose reference
• 63P-45378-00 short Yamaha nipple format

OEM / Related Numbers

• 63P-45378-00-00
• 63P-45378-00
• 63P453780000
• 63P4537800
• 93210-07540-00 related O-ring used with some 63P hose nipple listings
• 93210-07540 related Yamaha O-ring reference

Aftermarket / Verified Equivalents

• Direct confirmed aftermarket cross should be matched by OEM number 63P-45378-00-00
• Yamaha OEM replacement nipple supplied as 63P-45378-00-00
• Related Yamaha hose nipple family: 6E5-45378-00-00 for different Yamaha gearcase applications
• Generic Yamaha speedometer / cooling hose nipple repair fittings exist, but 63P-45378-00-00 should not be substituted without confirming thread, hose size and lower-casing diagram

📦 Condition

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