Quicksilver High Performance Gearbox Oil Change Kit for Mercury & Mariner F40 4-Stroke Outboards

Quicksilver High Performance Gearbox Oil Change Kit for Mercury & Mariner F40 4-Stroke Outboards – complete lower unit service solution.

This genuine Quicksilver High Performance Gearbox Oil Change Kit includes everything you need to carry out a full lower unit service on Mercury and Mariner F40 4-stroke outboard engines. Designed to protect your gearbox under all marine conditions, this kit combines premium-grade lubricant, sealing washers, and an optional pump for easy, mess-free filling.

Kit Contents:

• 1 × Quicksilver High Performance Gear Lube 1 Litre (SAE 90) – OEM-approved marine gear oil
• 2 × Stainless steel & silicone drain / vent screw washers (replaces Mercury 26-830749, 12-19183, 12-19183Q02, RM10-10100)
• 1 × Optional Quicksilver gear oil pump for clean and precise filling (if included)

Features & Benefits:

• Suitable for Mercury & Mariner F40 4-stroke outboards
• Provides exceptional protection against gear wear, rust, and corrosion
• Resists foaming and maintains viscosity under high load and temperature
• High-strength formula designed for saltwater and freshwater use
• Washers ensure a perfect seal on 3/8″ drain and vent screws
• Ideal for annual servicing or seasonal maintenance

Compatibility:

• Mercury F40 EFI / F40MLA / F40MLPT
• Mariner F40 EFI / F40MLA
• Also compatible with similar Mercury 4-stroke 40 HP gearcases

Technical Details:

• Viscosity: SAE 90 Marine Grade
• Capacity required: approximately 420–480 ml (1 L bottle provides a full change)
• OEM reference: Mercury 92-858064K01

Why Choose Quicksilver High Performance Gear Lube?
This premium gear oil is specifically engineered for Mercury and Mariner gearcases. It offers superior film strength, excellent water separation, and long-term protection against wear, corrosion, and pitting – ensuring smoother shifting and longer gearbox life.

Recommended service interval: every 100 hours or once per season.