PROPELLER
Yamaha 40HP Gear Set 6F5-45551-00 / 6F5-45560-00 / 6F5-45571-00
This Yamaha 40HP outboard gear set is designed for compatible Yamaha 40HP outboard motors and includes the main lower-unit drive gears required for power transmission.
Yamaha 40HP Gear Set 6F5-45551-00 / 6F5-45560-00 / 6F5-45571-00
Product Overview
This Yamaha 40HP outboard gear set is designed for compatible Yamaha 40HP outboard motors and includes the main lower-unit drive gears required for power transmission.
The set includes:
- 6F5-45551-00 – Pinion Gear
- 6F5-45560-00 – Forward Gear
- 6F5-45571-00 – Reverse Gear
These gears work together inside the outboard lower unit to transfer engine power to the propeller and control forward and reverse operation.
Suitable for repair shops, marine dealers, outboard service centers and wholesale spare-parts buyers.
Product Information
Product Name: Yamaha 40HP Outboard Gear Set
Application: Yamaha 40HP Outboard Motor
Engine Series: 6F5 Series
Type: Lower Unit Gear Set
Part Numbers:
- 6F5-45551-00 – Pinion
- 6F5-45560-00 – Forward Gear
- 6F5-45571-00 – Reverse Gear
Condition: New
Material: Steel
Application Area: Lower Unit / Gearcase / Drive System
Main Components
6F5-45551-00 Pinion Gear
The pinion gear transfers rotational power from the driveshaft to the forward and reverse gears inside the lower unit.
A worn or damaged pinion can cause abnormal gear noise, poor engagement or damage to other internal gears.
6F5-45560-00 Forward Gear
The forward gear engages when the outboard motor is shifted into forward.
It transfers power to the propeller shaft and allows the boat to move ahead.
The 6F5-45560-00 gear is commonly listed as a 24-tooth gear for compatible Yamaha 40HP applications.
6F5-45571-00 Reverse Gear
The reverse gear is responsible for transmitting power when the engine is shifted into reverse.
A properly matched reverse gear helps ensure smooth engagement and reliable operation of the lower unit.
Key Features
- Designed for Yamaha 40HP outboard motors
- Complete pinion, forward and reverse gear combination
- High-strength steel construction
- Precision-machined gear teeth
- Stable power transmission
- Suitable for lower-unit rebuilding and repair
- Good replacement option for worn or damaged gears
- Individual gears and complete sets available
- Wholesale and bulk orders welcome
Typical Signs That Gear Replacement May Be Needed
Lower-unit gears operate under high mechanical load and require proper lubrication.
Replacement should be considered if you experience:
- Grinding or knocking noise from the lower unit
- Difficulty shifting into forward or reverse
- Gear slipping under acceleration
- Metal particles in gear oil
- Broken or chipped gear teeth
- Excessive wear on the pinion or drive gears
- Damage caused by low or contaminated gear oil
- Lower-unit impact damage
When one gear has suffered severe wear or tooth damage, the mating gears should also be carefully inspected before installation.
Applications
This gear set is suitable for:
- Yamaha 40HP lower-unit repair
- Gearcase rebuilding
- Forward/reverse gear replacement
- Marine repair workshops
- Outboard motor dealers
- Spare-parts distributors
- Wholesale marine parts suppliers
Package Options
Available as:
- Pinion gear only
- Forward gear only
- Reverse gear only
- Complete 3-piece gear set
Please contact us for current stock and package options.
Wholesale Supply
We supply a wide range of Yamaha outboard motor spare parts, including:
- Gear sets
- Propeller shafts
- Drive shafts
- Bearings
- Oil seals
- Water pump kits
- Impellers
- Propellers
- Piston kits
- Gasket sets
- Crankshafts
- CDI units
- Ignition coils
- Lower-unit parts
Wholesale and bulk orders are welcome.
