Sierra 18-6770 Tilt-Trim Pump-Volvo #854346
Sierra 18-6770 Tilt-Trim Pump-Volvo #854346 — Product description
Upgrade your Volvo Penta sterndrive's hydraulic system with the Sierra 18-6770 tilt-trim pump, a dependable aftermarket solution engineered to restore smooth, responsive operation. Whether you're dealing with sluggish lifting, leaks, or total failure, this pump delivers the power and precision needed for effortless trailering, docking, and on-water adjustments. Boat enthusiasts trust Sierra for parts that match or exceed original equipment standards without the premium cost.
Precision Engineering for Reliable Performance
Crafted with high-grade materials, the Sierra 18-6770 features a robust motor and sealed construction to withstand the harsh marine environment. Its compact design ensures seamless integration into your existing setup, while the efficient hydraulic flow provides quick tilt and trim response—even under heavy loads. Say goodbye to jerky movements or incomplete lifts that compromise control and safety on the water.
- Durable seals and gaskets: Prevent common leaks that plague aging pumps.
- High-torque motor: Handles demanding applications on larger vessels.
- Corrosion-resistant housing: Built tough against saltwater exposure and freshwater grime.
- Direct OEM fit: Matches Volvo Penta specifications for plug-and-play reliability.
Perfect Compatibility with Volvo Penta Systems
This pump slots right into select Volvo Penta models, serving as a straight replacement for OEM reference 854346. It's ideal for sterndrives where hydraulic precision is critical, ensuring your engine tilts up fully for trailering and trims down for optimal planing. Always cross-check your engine's serial number to confirm fitment, as variations exist across model years.
Why Boat Owners Switch to Sierra
Sierra stands out in the marine aftermarket by prioritizing quality control and real-world testing. Unlike generic imports, every 18-6770 undergoes rigorous inspections to guarantee longevity—often outlasting stock units exposed to the same brutal conditions. Owners report fewer breakdowns, easier winterizations, and consistent performance season after season. It's the smart choice for DIY mechanics and professional riggers alike, saving time and frustration during repairs.
Step-by-Step Installation Insights
Replacing your tilt-trim pump doesn't have to be a weekend ordeal. Start by safely supporting the drive unit and depressurizing the hydraulic system—bleed the lines thoroughly to avoid air pockets. Disconnect electrical and hydraulic fittings, swap in the new unit, and refill with the manufacturer-recommended fluid. Test at the dock with low RPMs before hitting open water. Pro tip: Inspect solenoids and relief valves while you're in there to maximize system life.
Proactive Maintenance for Longevity
Extend the life of your new Sierra pump with simple habits: Check fluid levels before every outing, inspect hoses for cracks annually, and flush the system during off-season storage. Use only compatible hydraulic oil to avoid seal degradation. Spotting issues early—like unusual noises or slow response—can prevent costly cascading failures in your sterndrive.
Troubleshooting Tilt-Trim Woes
Common culprits include contaminated fluid causing sluggish action or worn solenoids mimicking pump failure. With the Sierra 18-6770, these symptoms vanish, restoring factory-fresh operation. If problems persist post-install, verify electrical grounds and battery voltage—weak power sources sabotage even the best pumps.
Frequently Asked Questions
What makes the Sierra 18-6770 a reliable tilt-trim pump replacement?
It uses premium seals, a high-torque motor, and corrosion-resistant materials to match OEM durability while handling marine abuse better than many stock units.
Which Volvo Penta models is this pump compatible with?
Designed as a direct fit for systems using OEM #854346, primarily certain sterndrive models—verify your engine serial for exact match.
How do I know if my tilt-trim pump needs replacing?
Look for slow or incomplete lift/trim, hydraulic leaks, whining motors, or failure to hold position—these signal pump wear.
Can I install the Sierra 18-6770 myself?
Yes, with basic tools and mechanical know-how. Depressurize the system, swap connections, refill fluid, and bleed air for success.
What maintenance keeps this pump running strong?
Regularly check fluid levels, use quality hydraulic oil, inspect for leaks, and flush annually to prevent contamination.
Does this pump work in saltwater environments?
Absolutely—its sealed, corrosion-resistant build excels in brackish or saltwater setups with proper rinsing.
How does Sierra compare to OEM Volvo Penta pumps?
Sierra offers comparable performance and fit at a fraction of the cost, backed by rigorous testing for marine reliability.
SKU: NVN-4002924
MPN: 18-6770
UPC: 030999754257
Technical specifications
| Brand | Sierra Engine Parts |
| Model | Sierra 18-6770 Tilt-Trim Pump-Volvo #854346 |
| SKU / MFR# | 4002924 |
Set product metafields under specs.* to populate this table.
Frequently asked questions
No questions yet. Got one? Drop us a line.
