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6B4-45300-31-4D Lower Unit Assy Gear Box for 2-storke Yamaha Outboard Motor Parts 9.9HP 15HP E9.9DMH E15DMH, 6B4-45300-01-4D(S), 6B4-45300-11-4D(L)

Price $245.00
Min Order 1 Piece
Availability In Stock
Shipping From Liaoning, China
Popularity 397 people viewed
Model NO.:
6B4-45300-01/11/31-4D
After-sales Service:
Yes
Warranty:
1 Year
Application:
Boat, Yacht
Standard:
ISO
Customized:
Non-Customized
Surface Treatment:
Oil Blooming
Material:
Aluminum Alloy
Type:
Gearbox
Engine:
2 Stroke
Engine Capacity:
1-2L
Cylinders:
2
Engine Position:
Outboard
Fuel Type:
Gasoline
Engine Power:
9.9HP 15HP
Applicable Brand:
YAMAHA
Unit Assy:
Lower Casing & Drive 1
Intake System:
Reed Valve
Fuel System:
Carburetor
Condition:
New
Trademark:
YALUME MARINE
Transport Package:
Box
Origin:
China, Japan, Taiwan
HS Code:
8409911100
Product Description


 
Detailed Photos

Installation Instructions

Product Description

6B4-45300-00-4D (S)
Lower Unit Assy, Yamaha,
For Outboard: Yamaha 9.9, Yamaha 15

6B4-45300-10/11-4D (L)
Lower Unit Assy, Yamaha,
For Outboard: Yamaha 9.9, Yamaha 15

6B4-45300-30/31-4D (X)
Lower Unit Assy, Yamaha,
For Outboard: Yamaha 15

Material:
Our Gearbox is made of aluminum alloy which offers a good balance of strength, weight, and corrosion resistance.

The gear box 6B4-45300 for Yamaha outboard motors is part of the lower unit assembly.
Its primary functions include:

 
1. Power Transmission: It transfers power from the engine to the propeller, allowing the boat to move.
2. Gear Reduction: The gearbox reduces the engine's RPM to a more manageable speed for the propeller, optimizing performance and efficiency.
3. Directional Control: It allows for steering and maneuverability by changing the angle of the propeller in relation to the hull.
4. Support: It houses bearings and supports the propeller shaft, ensuring stability during operation.

What's the differences between long and short gearbox?
 
The long and short gear boxes for Yamaha outboards accommodate different transom heights.
A long shaft is used for deeper transoms, while a short shaft suits shallower ones.
This ensures optimal performance and efficiency in various boat designs and water conditions.

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