YAMAHA OEM Turbo Propeller Hub Kit – MAR-D500H-UB-00 Guardian SQ-Lok Hub System | 50-100 HP Yamaha Outboards

YAMAHA OEM Turbo Propeller Hub Kit – MAR-D500H-UB-00 Guardian SQ-Lok Hub System | 50-100 HP Yamaha Outboards

The MAR-D500H-UB-00 is the correct OEM replacement hub kit for Yamaha 50–100 HP outboards (both 2-stroke and 4-stroke) using the mid-size gearcase with 15 splines.

Guardian SQ-Lok Hub System – Built for Today’s High-Performance Outboards

A square hub is required for proper installation of Turbo propellers. Turbo strongly recommends the Guardian SQ-Lok Hub System for maximum durability and performance.

Designed to withstand the extreme torque, punishing power, and high exhaust temperatures of modern marine engines, Guardian SQ-Lok hubs feature:

• Heavy-duty construction
• A reinforced nylon center core (drive adaptor)
• Molded-in interlocking brass spline insert for superior strength and longevity
• Easy installation and replacement
• All necessary hardware included

Demand tough. Demand convenient. Demand Guardian SQ-Lok.

Fitment – Yamaha Mid-Size Gearcase (15 Spline)

2-Stroke Models:

• 60 HP (1992–2005)
• 70 HP (2000~)
• 75 HP (1994–1999)
• 80 HP (1997)
• 85 HP (1991–1997)
• 90 HP (1984~)

4-Stroke Models:

• T50 (1996~)
• T60 (1999~)
• F70 (2010~)
• F75 (2003~)
• F80 (1999–2002)
• F90 (1999–2017)
• F100 (1999–2002)

Gearcase Note: Fits Yamaha mid-size gearcase applications (mostly 4.25" diameter, 15 splines).

Perfect for anyone running Turbo propellers on their Yamaha 50–100 HP outboard. Reliable, easy to install, and built to last.