Sierra 18-6779 Tilt & Trim Motors
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Within 30 days
Sierra 18-6779 Tilt & Trim Motors Product Description
Keeping your outboard motor running smoothly means paying close attention to the components that handle the heavy lifting—like the tilt and trim system. When that motor starts to falter, you notice it immediately: sluggish lifts, uneven trim adjustments, or complete failure to respond. The Sierra 18-6779 tilt and trim motor steps in as a dependable aftermarket solution, engineered to restore precise control and reliable performance on the water.
Crafted with marine-grade materials, this motor withstands the corrosive saltwater environment and relentless vibrations that come with boating life. It's not just a part; it's a direct upgrade that matches or exceeds the functionality of factory originals, helping you avoid costly dealer markups without sacrificing quality.
Key Features That Stand Out
- Robust Construction: Zinc-plated housing and sealed components resist corrosion, extending service life even in harsh brackish or saltwater conditions.
- High-Torque Performance: Delivers powerful lifts for heavier props and hulls, ensuring quick response times for better handling and fuel efficiency.
- Direct Bolt-On Design: Matches OEM specifications for seamless integration—no custom modifications required.
- Thermal Protection: Built-in safeguards prevent overheating during extended use, reducing the risk of premature wear.
- Quiet Operation: Smoother gearing minimizes noise, so you can focus on the horizon rather than mechanical hums.
Real-World Benefits for Boaters
Boat owners rave about the difference this motor makes. Imagine effortlessly trimming your engine for optimal planing or tilting up at the dock without straining relays or hydraulics. It supports better weight distribution, which translates to improved stability and reduced bow rise during acceleration. Plus, in rough seas, that reliable trim adjustment can mean safer rides and less pilot fatigue.
Perfect Fit for Popular Outboards
The Sierra 18-6779 is tailored for a range of Mercury and Mariner powerheads, commonly fitting models from 40HP to 125HP inline fours and V6s produced in the late 80s through mid-90s. Always cross-reference your engine's serial number to confirm compatibility, as variations exist across power trim and tilt systems.
Installation Insights from the Field
Swapping out a tilt and trim motor is a weekend warrior project for most DIYers with basic tools. Start by disconnecting the battery, relieving hydraulic pressure, and unbolting the old unit. Fresh gear lube during reassembly keeps everything spinning smoothly. Pro tip: Inspect mounting brackets and hydraulic rams for wear while you're in there—addressing them prevents future headaches. If you're new to this, grab a service manual for your specific model to guide torque specs and wiring diagrams.
"Replaced my '92 Merc 90 with this Sierra motor over a holiday weekend. Lifts like new, and half the hassle of sourcing OEM parts." – Experienced angler feedback.
Longevity Through Smart Maintenance
To maximize the lifespan of your Sierra 18-6779, rinse with freshwater after every saltwater outing and check fluid levels seasonally. Listen for unusual grinding or hesitation—these early warnings can save you from full system overhauls. Regularly test the tilt/trim at idle to catch solenoid or relay issues before they strand you.
Common pitfalls? Overloading with undersized relays or skipping annual fluid changes. Stick to manufacturer-recommended gear oil types, and you'll enjoy years of trouble-free operation.
Why Boaters Trust Sierra Over Others
Sierra has built a reputation on precision reverse-engineering, using data from thousands of teardowns to perfect every component. Unlike generic imports, these motors undergo rigorous testing for IP67 water resistance and load-bearing capacity. They're the choice for marinas, repair shops, and savvy weekend warriors who demand reliability without the premium price tag.
Frequently Asked Questions
What outboard models is the Sierra 18-6779 compatible with?
It's designed for many Mercury and Mariner 40HP to 125HP inline and V6 outboards from the late 1980s to mid-1990s. Verify with your engine's serial number for exact fitment.
How do I know if my tilt and trim motor needs replacing?
Signs include slow or jerky movement, failure to hold position, unusual noises like grinding, or fluid leaks. Test by cycling the system with the engine off.
Is installation straightforward for beginners?
Yes, for those with mechanical experience. It typically involves basic tools, but consult your outboard's service manual for wiring and torque details to avoid issues.
Does this motor work in saltwater environments?
Absolutely. Its corrosion-resistant zinc plating and sealed design make it ideal for both freshwater and saltwater use.
What's the difference between this and an OEM motor?
Sierra motors match OEM specs and performance but offer better value. They're rigorously tested for durability, often outlasting generics.
How often should I maintain the tilt and trim system?
Flush after saltwater trips, check fluids annually, and inspect for wear during routine engine service.
Can I use this on electric start models?
Yes, it integrates with standard electric start power trim systems on compatible Mercury engines.
Buy with the best price Sierra 18-6779 Tilt & Trim Motors for only $199 from NVN Marine! Same day shipping before 3pm.
Sierra 18-6779 Tilt & Trim Motors Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Sierra Engine Parts |
| Weight: |
4.69 lb |
| Replaces: |
OMC - 986280, 3853945; Volvo - 3853945, 986280 |
Sierra 18-6779 Tilt & Trim Motors User Reviews
Sierra 18-6779 Tilt & Trim Motors Shipping & Return
| Shipping Weight: |
4.69 lb |
|---|---|
| Box Sizes: |
4.00 (h) x 6.00 (w) x 7.00 (l) |
| Cubic Feet: |
168.0 |
| Returnable: |
Yes |
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