Volvo Penta Dual Rear Stainless Steel (13.9 x 21″) Solas RH Propeller, 8551-139-21
Introduction
The Volvo Penta Dual Rear Stainless Steel (13.9 x 21″) Solas RH Propeller, 8551-139-21 is a precision-engineered solution for boat owners and marine professionals who demand excellence in propulsion. Designed specifically for Volvo Penta outboard marine engines, this right-hand rotating propeller offers unmatched performance, fuel efficiency, and durability in saltwater and freshwater environments. Whether you’re involved in recreational boating or commercial marine applications, this propeller ensures smooth acceleration and optimal control.
Crafted from corrosion-resistant stainless steel and tested for maximum reliability, the Solas 8551-139-21 propeller is an excellent upgrade for those looking to boost their marine engine’s thrust and speed. It’s not just a part — it’s a performance enhancement that can redefine how your boat moves through water.
Overview / What Is Volvo Penta Propeller for Marine
The Volvo Penta Dual Rear Stainless Steel Propeller is a high-performance marine component built to deliver precise maneuverability, smooth shifting, and consistent top-end speed. It is part of a dual propeller setup where the rear propeller complements the front to provide better acceleration and grip, particularly in high-horsepower Volvo Penta setups.
Designed with a 13.9-inch diameter and a 21-inch pitch, this RH (right-hand) rotating stainless steel propeller fits perfectly on boats using Volvo Penta DuoProp drives. It supports superior hydrodynamic efficiency, decreases cavitation, and is optimized for marine engine loads in both light and heavy watercraft applications.
Key Features of Volvo Penta Dual Rear Stainless Steel Propeller
- Material: Premium stainless steel construction for corrosion resistance
- Design: 3-blade, high-rake geometry for maximum thrust and fuel economy
- Size: 13.9” diameter x 21” pitch
- Rotation: Right-Hand (RH)
- Fitment: Compatible with Volvo Penta Dual Prop drive systems
Advantages of Using a Dual Rear Stainless Steel Propeller
Compared to standard single propellers, the Volvo Penta Dual Rear Propeller increases propulsion efficiency and offers significantly improved handling, especially at high speeds or while docking. It minimizes torque steer and vibration, delivering a comfortable ride regardless of sea conditions.
When paired with the correct dual front propeller, this unit dramatically improves hole shot, allowing quicker planing times and better fuel efficiency during cruising.
How to Install Volvo Penta Propeller on Marine Engines
Installing the Volvo Penta 13.9 x 21” RH Propeller requires basic marine mechanical knowledge. Ensure the engine is turned off, the boat is on dry dock or trailer, and the necessary tools are available. Proper alignment of the propeller splines and tightening torque specifications are essential to avoid vibration or performance issues.
Steps:
- Remove the existing rear propeller and inspect the shaft for corrosion or debris.
- Grease the propeller shaft lightly with marine-grade lubricant.
- Slide the Solas 8551-139-21 onto the shaft, aligning the splines.
- Secure with the original washer, nut, and cotter pin (or locking mechanism).
- Spin manually to ensure there is no resistance or misalignment.
Maintenance Tips
Regular maintenance of your Volvo Penta propeller will extend its life and enhance engine performance. After each trip, especially in saltwater, rinse thoroughly with fresh water to remove salt deposits. Inspect for fishing lines, dings, or cracks that may impair performance.
Ensure the propeller nut is tight and corrosion-free, and check the splines every 100 hours of use. Use anti-corrosion spray or grease to prevent shaft seizure, especially in brackish water environments.
Expert Advice and Pro Recommendations
Professionals recommend pairing this rear propeller with its compatible dual front unit for optimal performance. Always verify shaft compatibility and ensure your current engine pitch and diameter requirements align with this model.
For boats that carry heavy loads or experience choppy waters, this stainless steel rear propeller provides unmatched resilience and performance.
Buy now: Volvo Penta Dual Rear Stainless Steel (13.9 x 21″) Solas RH Propeller, 8551-139-21 and get 5% off with code WELCOME5.
Common Troubleshooting for Volvo Penta Propeller
If your propeller is underperforming, check for issues like:
- Cavitation or ventilation from incorrect prop alignment
- Propeller dings, bends, or erosion
- Spline damage or incorrect installation torque
Vibration while cruising often points to a bent blade or imbalance. In such cases, a professional propeller shop can rebalance or recommend replacement.
Volvo Penta Propeller Cost and Durability
While stainless steel propellers like the Solas 8551-139-21 cost more upfront, they last significantly longer than aluminum counterparts. The enhanced strength means fewer replacements and less maintenance over time, especially in saltwater environments.
This propeller pays for itself through long-term fuel efficiency and reduced wear on your marine engine. It’s a solid investment for serious boaters.
Detailed FAQ Section
1. What boats are compatible with the Volvo Penta Dual Rear Stainless Steel (13.9 x 21″) Propeller?
This propeller is designed for Volvo Penta DuoProp systems commonly found in high-performance recreational boats, cruisers, and commercial vessels. Always consult your owner’s manual or mechanic to ensure the shaft and pitch are compatible with your setup. Boats operating in saltwater or requiring strong mid-range acceleration benefit greatly from this design.
2. How do I know if the propeller pitch is right for my engine?
The 21-inch pitch is ideal for mid- to high-range RPM operations, suitable for engines that require balanced fuel efficiency and power. If your engine over-revs or underperforms, you might need to adjust the pitch. A propeller with too low a pitch may overwork your engine, while too high may prevent planing. Always monitor RPMs and consult a marine technician if unsure.
3. How should I maintain my stainless steel propeller?
Wash it with fresh water after every use, especially in saltwater. Apply marine grease on the shaft during reinstallations and use a propeller wrench to ensure the nut remains snug. Check periodically for fishing line tangles, corrosion, and physical damage. If the propeller shows signs of pitting or cavitation burns, consider professional servicing or replacement.
4. Can I use this propeller in saltwater and freshwater?
Yes, the Solas RH stainless steel design is specifically built to resist corrosion in saltwater environments while maintaining durability in freshwater. It’s ideal for brackish water too. However, frequent maintenance is key in salt-heavy regions to avoid buildup and shaft corrosion. Regularly removing and cleaning the propeller will preserve its life significantly.
5. What makes this propeller better than an aluminum alternative?
Stainless steel offers better strength, longer life, and enhanced performance. Aluminum propellers are more affordable but can bend easily and corrode over time. The Solas 8551-139-21 stainless steel propeller is less prone to damage, especially in shallow or rocky waters. It also provides better hole shot and grip due to thinner, more hydrodynamic blade design.
Conclusion
The Volvo Penta Dual Rear Stainless Steel (13.9 x 21″) Solas RH Propeller, 8551-139-21 is a game-changer in marine propulsion. It combines robust stainless steel construction with a hydrodynamic design to deliver unmatched performance and efficiency. Whether cruising offshore or operating in inland waters, this propeller will enhance your boating experience through smoother handling, faster planing, and better fuel economy.
If you’re serious about performance and longevity, this propeller is a worthwhile investment.
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