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66T-42710-01-4D 66T-42710-00-4D 66T-42710-00-4D)
PREMARINE
| Quantity: | |
|---|---|
| Parameter | Specification |
| Part Number | 66T-42710-01-4D (Supersedes: 663-42710-00-4D / 66T-42710-00-4D) |
| Compatible Brand | Yamaha Marine |
| Component Type | Outboard Bottom Cowling Assembly / Aluminum Engine Apron |
| Engine Type | 2-Stroke Outboard Engines (40HP) |
| Material | High-Strength Marine-Grade Cast Aluminum Alloy |
| Manufacturing Process | Precision Aluminum Die-Casting & Multi-Layer Anti-Corrosion Coating (-4D Finish) |
| Installation | Direct OEM Plug & Play Replacement |
Heavy-Duty Cast Aluminum Construction: Die-cast from high-tensile marine-grade aluminum alloy, delivering exceptional structural rigidity and impact resistance against harsh marine environments.
Marine-Grade Corrosion Defense: Treated with anti-corrosion passivation and Yamaha's -4D dark bluish gray metallic finish, providing superior protection against saltwater oxidation and paint blistering.
Cable Management & Drainage Integration: Features molded pass-through grommets for shift/throttle cables and fuel lines, along with integrated drainage channels to purge trapped water rapidly.
Primarily compatible with Yamaha 2-stroke 40HP outboard engines (featuring the 66T and 6F5 model codes):
Yamaha 2-Stroke 40HP Series: 40X, E40X, Enduro 40 series (commercial twin-cylinder 2-stroke platforms).
PREMARINE Direct Replacement: PREMARINE produces high-performance aftermarket bottom cowling assemblies manufactured from corrosion-resistant aluminum alloy to exact 66T dimensions for direct replacement of damaged factory aprons.
PREMARINE Quality & Durability: Built with heavy-duty marine alloy and a durable finish, PREMARINE bottom cowlings provide outstanding structural strength and high cost-effectiveness for Yamaha 40HP/E40X owners.
Cracked Mounting Tabs or Shell Fractures: Severe physical impacts or violent vibrations can fracture the aluminum mounting bosses, causing the apron to wobble. Replacement is required.
Worn Latch Catches / Loose Top Cowl: Damaged latch mounting areas on the bottom cowl prevent top cowlings from sealing properly, allowing saltwater spray onto powerhead electrical components.
Aluminum Oxidation & Clogged Drain Ports: Damaged paint allows salt corrosion to pit the aluminum casting, while debris blocking drain ports traps water inside the cowl casing. Clean drain holes and inspect body paint regularly.
OEM Part Numbers
Compatible OEM references include:
66T-42710-01-4D
66T-42710-00-4D
663-42710-00-4D
Compatible Engine Models
This Bottom Cowling Assembly is primarily designed for:
2-Stroke 40HP
If you are unsure about compatibility, please provide your engine model number or identification plate for verification before ordering.
Applications
This Bottom Cowling Assembly is commonly used for:
Outboard engine repair
Engine rebuilding projects
Marine maintenance workshops
Boat fleet maintenance
Commercial fishing vessels
Recreational boats
Marine spare parts distribution
