# 90790-BS811 Yamaha GL5 Gear Case Lube 750ml | Genuine OEM Yamaha Outboard Part

🔧 Product Description

  

Genuine Yamalube SAE 90 GL-5 Gearcase Lubricant - Part Number: 90790-BS811

  

Genuine Yamalube high-performance lower-unit gear oil formulated for heavily loaded Yamaha outboard gearcases.

  

The SAE 90 GL-5 lubricant contains extreme-pressure, anti-corrosion, oxidation-control and anti-foaming additives for high-output V6 and V8 lower units.

  

⚙️ Key Features

  

• Genuine Yamalube OEM gearcase lubricant

• Correct Yamaha part number 90790-BS811

• SAE 90 viscosity grade

• API GL-5 extreme-pressure performance

• Supplied in a 750ml squeeze bottle

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 90790-BS811 current Yamaha 750ml GL-5 gear-lube package reference

  

OEM / Related Numbers:

  

• 90790-BS811

• Yamalube GL-5 gearcase lubricant

• Yamalube SAE 90 lower-unit oil

• 750ml squeeze bottle

  

Aftermarket / Verified Equivalents:

  

• Marine SAE 90 GL-5 gear lubricant approved for the applicable Yamaha gearcase

• Quicksilver High Performance Gear Lube where an equivalent marine GL-5 lubricant is permitted

• Sierra high-performance marine gear lubricant

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha high-output V6 and V8 lower units

• Offshore, VMAX SHO and high-performance gearcases

  

Typically suits:

  

• Engine models:

• Yamaha V6 and V8 outboards approximately 200HP to 350HP

• Yamaha F200, F225 and F250 high-output gearcases

• Yamaha F300 and F350 V8 applications where GL-5 SAE 90 is specified

• Yamaha VF200 and VF250 VMAX SHO

• Yamaha 4.2L V6 Offshore engines from approximately 2010 onward

• Conventional and counter-rotation lower units requiring Yamaha GL-5 lubricant

  

• Product Type: SAE 90 API GL-5 marine gear oil

• Container Size: 750ml

• Application: High-load Yamaha outboard gearcases.

  

🔌 Function

  

The lubricant protects gears, bearings and shafts under high tooth pressure while resisting water contamination, oxidation, corrosion and foaming.

  

Common signs gear lubricant requires replacement:

  

• Oil appears milky or water-contaminated

• Metal particles are present

• Gearcase becomes noisy

• Lubricant is dark or burnt

• Service interval has been reached

  

📦 Condition

  

• Genuine Yamaha product

• Brand new

• Supplied in original packaging

## Details

- **Price:** 23.0 AUD
- **Vendor:** Yamaha
- **Tags:** Yamaha Marine Parts | Outboard Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 23.00 AUD | In stock |

## Images

- 90790-BS811 Yamaha GL5 Gear Case Lube 750ml | Genuine OEM Yamaha Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/90790-bs811-gl5-gear-case-lube-750ml)
> Updated: 2026-07-11