Sierra 18-6806 Volvo Tilt N Trim Motor

Upgrade Your Volvo Penta SX Sterndrive with Reliable Tilt and Trim Performance

Boaters know the frustration of a sluggish or unresponsive tilt and trim system—it can turn a smooth day on the water into a hassle. This Sierra replacement motor steps in as a dependable fix for late-model SX sterndrives equipped with coarse threads, restoring that effortless up-and-down action for your outdrive. Crafted with precision engineering, it mirrors the original equipment's functionality while delivering the durability needed for repeated freshwater or saltwater exposures.

What sets this apart? It's not just a plug-and-play part; it's built to handle the rigors of marine environments, from corrosive salt spray to the constant hydraulic pressures of trimming under load. Whether you're trailering your boat, docking in tight slips, or fine-tuning your prop for peak efficiency, this motor ensures smooth operation every time.

Perfect Fit for Late-Model SX Models

Designed specifically for Volvo Penta's late-model SX sterndrives featuring coarse threads, this motor bolts on without modifications. It integrates seamlessly with existing hydraulic rams and control systems, maintaining factory-level performance. Key compatibility notes:

• Targets SX drives post-2000 builds—verify your thread type (coarse pitch) for a match.
• Compatible with dual-prop setups where trim responsiveness is critical for handling.
• Replaces worn OEM motors prone to seal failures or armature burnout after years of service.

Pro tip: Before swapping, inspect your hydraulic fluid for contamination, as dirty oil accelerates wear on new motors too.

Key Features That Deliver Real-World Results

This Sierra motor packs robust construction into a compact design:

• Heavy-duty brushes and commutator: Resist arcing and sparking for longer life under high-torque demands.
• Sealed housing: Guards against moisture intrusion, a common killer in wet environments.
• High-torque output: Quickly raises and lowers heavy outdrives, even with full fuel tanks aboard.
• Corrosion-resistant materials: Brass and stainless components fend off electrolysis in brackish waters.

Users report it outperforming stock replacements in speed and quiet operation, thanks to optimized gearing that reduces strain on your boat's electrical system.

Boost Your Boating Experience: Benefits Beyond Basics

Installing this motor isn't just about fixing a problem—it's about reclaiming control and confidence on the water. Imagine trimming your drive perfectly for planing without hesitation, or tilting up effortlessly at the ramp to avoid underwater obstacles. It enhances fuel efficiency by allowing precise propeller adjustments and cuts down on battery drain during long outings.

From weekend warriors to serious anglers, this upgrade minimizes downtime. No more slow leaks or grinding noises that signal impending failure—just reliable performance that keeps you focused on the horizon.

Step-by-Step Installation Insights

Swapping out your old motor takes about an hour with basic tools. Here's a streamlined guide:

1. Power down and tilt the drive to full up position for access.
2. Disconnect battery, then hydraulic lines—catch any fluid spillage.
3. Unbolt the motor (typically three mounts) and detach electrical leads.
4. Reverse for install: Torque bolts to spec (around 15-20 ft-lbs), reconnect lines, and bleed air from the system.
5. Test cycle several times with engine off to purge air bubbles.

Common pitfall: Forgetting to cycle the system post-install leads to spongy response. Always top off fluid with Volvo-compatible hydraulic oil afterward.

Maintenance Tips to Maximize Longevity

Keep it running strong with these habits:

• Rinse with freshwater after saltwater use to flush salt buildup.
• Check electrical connections seasonally for corrosion—dielectric grease works wonders.
• Monitor hydraulic fluid levels monthly; milky fluid means water intrusion.
• Avoid overloading by trimming gradually under power.

With proper care, expect years of service, outlasting many factory units exposed to similar conditions.

Troubleshooting Common Tilt and Trim Issues

Spot problems early to prevent bigger headaches:

If symptoms persist post-replacement, inspect the ram seals—they often fail alongside motors.