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)

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Yarwor (Dalian)Marine Equipment Co.,Ltd.

VIP   Audited Supplier 2 years
Profile Certified by SGS/BV
6B4-45300-01/11/31-4D
Yes
1 Year
Boat, Yacht
ISO
Non-Customized
Oil Blooming
Aluminum Alloy
Gearbox
2 Stroke
1-2L
2
Outboard
Gasoline
9.9HP 15HP
YAMAHA
Lower Casing & Drive 1
Reed Valve
Carburetor
New
YALUME MARINE
Box
China, Japan, Taiwan
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.

More Products We Have:
 
BEARINGHOUSING,WATER PUMP
BOLT / SCREWIMPELLER
BUSHING / COLLARVALVE / JET,MAIN
BRACKETKEY,WOODRUFF
CABLE, REMOTE/STEERING /MOUNT DAMPER
THROTTLE/STEERING SYSTEMNUT
CAP LOWER CASINGOIL SEAL
CARBURETOR ASSY / REPAIR KITO-RING
CDI / CABLE,BATTERY / RELAY ASSYOUTER PLATE
COIL / PLUG,SPARKPIN,CROSS/DRIVE/
CARTRIDGE INSERTSTRAIGHT/COTTER
CLIPPISTON
CLUTCH DOG / BALLPISTON PIN
CONNECTING RODPISTON RING
CRANK PINPROPELLER
CRANKSHAFTPROPELLER SHAFT
DIAPHRAGMWATER PUMP REPAIR KIT
DAMPER, WATER SEALREMOTE CONTROL ASSY
DRIVE SHAFTSEAL,LABYRINTH
FILTERSLEEVE LINER
FUEL PUMPSPACER
FUEL PARTSSPRING
FLOATSTARTER
GASKETSWITCH ASSY
GASKET KITTHERMOSTAT
GEAR / PINION ASSYWASHER/SHIM
TAB-TRIMANODEIN
NEW GEAR 
 
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