YMD-GL4PM-P1 Yamalube Gear Oil Pump 1ltr | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Yamalube One-Litre Gear Oil Bottle Pump - Part Number: YMD-GL4PM-P1

A genuine Yamaha hand pump designed to fit one-litre Yamalube GL4 and GL5 gear-oil bottles.

The pump allows clean, controlled filling of an outboard or sterndrive gearcase through the lower drain and fill opening, reducing spills and trapped air during lower-unit servicing.

⚙️ Key Features

• Genuine Yamaha gear-lube service pump
• Correct Yamaha part number YMD-GL4PM-P1
• Designed for one-litre Yamalube gear-oil bottles
• Supplied with hose and Yamaha gearcase filling adaptor
• Suitable for Yamaha two-stroke and four-stroke lower units

🚤 Compatibility

Commonly used on

• Yamaha outboard and sterndrive gearcases
• Yamalube one-litre GL4 and GL5 gear-oil containers

Typically suits

• Engine models:
• Yamaha two-stroke outboards
• Yamaha four-stroke outboards
• Yamaha HPDI outboards
• Yamaha standard-rotation and counter-rotation lower units
• Yamaha sterndrives with compatible fill-plug threads
• Yamaha HPDI high-pressure pump filling where the workshop procedure specifies this pump
• HP Range: Yamaha portable through high-horsepower outboards
• Engine Type: Yamaha two-stroke, HPDI and four-stroke outboard
• Bottle Compatibility: One-litre Yamalube GL4 and GL5 containers

🔌 Function

The pump transfers fresh lubricant into the lower unit from the bottom fill opening until oil exits the upper vent.

Typical use

• Remove the upper vent plug
• Remove the lower drain and fill plug
• Thread the pump adaptor into the lower opening
• Pump lubricant until clean oil exits the upper vent
• Refit the upper plug before disconnecting the pump
• Refit the lower plug using new sealing washers

⚠️ Common Signs of Failure

• Filling directly from the bottle is slow or messy
• Air becomes trapped inside the gearcase
• Gear oil spills while changing bottles
• The lower unit requires controlled bottom-up filling
• Repeated marine servicing requires a reusable pump

🔄 Supersession & Cross Reference

OEM Supersession Chain

• YMD-GL4PM-P1 current Yamaha accessory reference

OEM / Related Numbers

• YMD-GL4PM-P1
• YMD-GL4PM-P1-00
• YMDGL4PMP100
• Yamalube GL4 one-litre gear oil
• Yamalube GL5 one-litre gear oil

Aftermarket / Verified Equivalents

• Universal one-litre marine gear-oil bottle pump
• Lower-unit filling pump with Yamaha threaded adaptor
• Mercury adaptor may be supplied with selected pump versions

📦 Condition

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