PROPELLER
Premium 6B4-45300-11-4D Lower Unit Assembly for Yamaha 15HP 2-Stroke Outboard Motor
The 6B4-45300-11-4D Lower Unit Assembly is specifically engineered for the legendary Yamaha 15HP 2-Stroke Enduro series (6B4/E15D models). Unlike standard leisure-grade gearboxes, this commercial-grade assembly is built to withstand continuous, high-intensity operations in challenging marine environments
Premium 6B4-45300-11-4D Lower Unit Assembly for Yamaha 15HP 2-Stroke Outboard Motor | Long Shaft Gearcase Assy
100% Brand New OEM-Quality Match: Direct replacement for Yamaha part number 6B4-45300-11-4D / 6B4-45300-11.
Commercial Enduro Grade: Engineered specifically for Yamaha 6B4 (E15D) series, built to endure heavy-duty marine environments.
Ready-to-Install Module: Complete bolt-on assembly including pre-shipped gears, bearings, oil seals, and water pump.
Superior Corrosion Protection: Marine-grade aluminum alloy with multi-layer coating and built-in anode position for maximum saltwater durability.
Smooth Shifting & Performance: Precision-machined alloy steel gears ensure low noise, high torque transfer, and minimal hydrodynamic drag.
Specifications：
Parameter | Specification Details |
Brand Compatibility | Fits Yamaha Outboard Motors |
Engine Capacity | 15HP (15 Horsepower), 2-Stroke |
Model Code Match | 6B4 / E15D / 15D (Enduro / Commercial Series) |
OEM Part Number | 6B4-45300-11-4D, 6B4-45300-11, 6B4-45300 |
Shaft Length | L Shaft (Long Shaft) - Fits approx. 20" Transom |
Color/Finish | Official Marine Dark Bluish Gray (-4D) |
Package Includes | Complete Gearcase Housing, Driveshaft, Propeller Shaft, Gear Set, Clutch Dog, Water Pump Base & Impeller |
