Volvo Penta Dual Rear (13.75 x 21″) Solas RH Propeller, 8513-138-21
Introduction
The Volvo Penta Dual Rear (13.75 x 21″) Solas RH Propeller, 8513-138-21 is a high-performance marine propeller engineered to meet the demanding needs of boating enthusiasts. Built with advanced aluminum technology, this propeller delivers outstanding thrust, smoother acceleration, and improved fuel efficiency. Designed to work as part of the Volvo Penta DuoProp system, it pairs perfectly with its dual front counterpart to enhance boat handling and stability in various water conditions.
This Solas-manufactured propeller is known for its precision, strength, and corrosion resistance, making it ideal for long-term use in both saltwater and freshwater environments. Whether you’re upgrading or replacing your existing propeller, the 8513-138-21 offers a premium solution for maximizing engine performance and reliability.
Overview / What Is Volvo Penta Dual Rear (13.75 x 21″) Solas RH Propeller?
The Volvo Penta Dual Rear 13.75 x 21 propeller is a right-hand (RH) rotating rear propeller specifically designed to work in tandem with the dual front propeller in the DuoProp system. This configuration enhances propulsion by creating a balanced thrust, reducing cavitation, and increasing grip during acceleration and turns. The propeller’s 21-inch pitch is optimized for boats that require higher top-end speeds while maintaining stability and fuel efficiency.
Key features include:
- Diameter: 13.75 inches
- Pitch: 21 inches
- Rotation: Right-hand (RH)
- Material: Corrosion-resistant aluminum
- Part Number: 8513-138-21
Performance Highlights of the Volvo Penta 21 Propeller
The 8513-138-21 Solas RH propeller offers several performance advantages that make it a preferred choice among boaters:
- Enhanced Top Speed: The 21-inch pitch enables higher maximum speeds without compromising control.
- Improved Handling: Dual-prop design reduces steering effort and improves tracking.
- Fuel Efficiency: Optimized hydrodynamics lower fuel consumption during long cruises.
- Reduced Cavitation: The balanced thrust minimizes prop slip and cavitation issues.
These benefits ensure that your boat operates efficiently, safely, and smoothly under all conditions.
How the Volvo Penta Dual Prop System Enhances Boating
The DuoProp system is one of Volvo Penta’s most innovative designs, using counter-rotating propellers to deliver superior thrust and efficiency. Unlike single-propeller setups, the dual configuration ensures better grip on the water, making acceleration more responsive and turns more precise. This is particularly beneficial for larger boats, high-speed runs, and towing activities.
By pairing the Volvo Penta Dual Rear 13.75 x 21 with its matching front propeller, you achieve maximum propulsion efficiency, smoother rides, and better fuel economy — all while reducing engine strain.
Installation & Compatibility Guide
Installing the Volvo Penta Dual Rear 21 propeller is straightforward for experienced boat owners, but precision is essential. Ensure that the rear propeller aligns correctly with the front propeller and that all torque specifications are followed. Use marine grease on the shaft to prevent corrosion and ensure easy removal during maintenance.
Compatibility should be confirmed with your boat’s engine manual or by consulting a marine expert. This propeller is suitable for a range of Volvo Penta DuoProp drives, making it versatile and widely applicable.
Maintenance Tips
Regular maintenance keeps your Volvo Penta 21 propeller in top condition. Follow these tips:
- Inspect for cracks, dents, or bent blades after each trip.
- Remove marine growth, salt deposits, and debris regularly.
- Apply anti-corrosion spray or grease to prevent rusting.
- Check propeller balance and replace if vibration increases.
Proper care extends the propeller’s life, ensures fuel efficiency, and maintains peak performance.
Expert Advice and Pro Recommendations
Marine experts recommend using only genuine Solas or Volvo Penta parts to avoid compatibility problems and ensure performance. Always replace both the front and rear propellers together to maintain balance. Regularly monitor your boat’s performance — if you notice loss of speed or unusual vibrations, inspect the propeller immediately.
Buy now: Volvo Penta Dual Rear (13.75 x 21″) Solas RH Propeller, 8513-138-21 and use code WELCOME5 to get 5% off your order.
Detailed FAQ Section
1. How do I ensure the Volvo Penta Dual Rear 21 propeller fits my boat?
Compatibility depends on your boat’s drive system. The 8513-138-21 is specifically designed for Volvo Penta DuoProp drives, but exact fitment requires verifying your model and serial number. Contacting a marine parts dealer or referencing your engine manual is the safest way to confirm compatibility. Using the wrong propeller can lead to poor performance, increased fuel usage, and even mechanical damage.
Before purchasing, consider your boating style. For heavy loads or frequent towing, the 21-inch pitch is ideal for maintaining power without sacrificing stability.
2. Why choose a Solas RH propeller over cheaper options?
Solas RH propellers are built with precision engineering, offering better balance, performance, and corrosion resistance. Unlike generic props, Solas models are designed to work seamlessly with Volvo Penta systems, reducing vibration and maximizing efficiency. Cheap alternatives may save money initially but can cost more over time due to inefficiency, repairs, and premature failure.
Investing in a quality propeller ensures longevity, fuel savings, and safer boating experiences.
3. Can I install the 8513-138-21 propeller without professional help?
Yes, many experienced boat owners can install the propeller themselves, but it requires careful alignment and correct torque application. Always follow the manufacturer’s installation guide. Incorrect installation can lead to imbalance, vibrations, and damage to the drive unit. If in doubt, hire a marine mechanic to ensure a safe and precise installation.
4. How often should the propeller be inspected or replaced?
Inspect your propeller after every boating trip for damage. Even small dents or bends can affect performance. A well-maintained Solas propeller can last many years, but replacement is necessary if performance decreases, fuel consumption rises, or vibrations worsen. Regular inspections are crucial for early detection of issues.
5. What are the benefits of a dual propeller system?
A dual propeller system, like the Volvo Penta DuoProp, offers better acceleration, increased grip, and improved fuel economy compared to single prop setups. The counter-rotating design minimizes cavitation and enhances stability, making it ideal for high-speed performance and heavy-duty use. The 8513-138-21 rear propeller plays a critical role in this system, working together with the front propeller to deliver superior thrust and control.
Conclusion
The Volvo Penta Dual Rear (13.75 x 21″) Solas RH Propeller, 8513-138-21 combines cutting-edge design, durability, and high performance, making it an excellent choice for boaters seeking top-tier propulsion solutions. With its precision engineering and compatibility with DuoProp systems, it enhances every aspect of boating — from acceleration to fuel efficiency. Choosing this propeller means choosing reliability and optimal performance.
Special Offer
WELCOME5 – Get 5% off storewide at allboatsupplies.com
🚀 Instant Assistance: Need help selecting the right product? Drop your contact in the chatbox at the bottom right corner, and our expert team will reply within 30 minutes with the best product suggestion for your boat — including a ready-to-use checkout link. We’re fast, knowledgeable, and always here for your boating needs!
No more guesswork — just message us and get a personalized checkout link for your antifouling system, fast!
Explore Our Best-Selling Ultrasonic Antifouling Products:
Buy now
Volvo Penta Dual Rear (13.75 x 21″) Solas RH Propeller, 8513-138-21
Let us handle the hassle — expert support, quick replies, and smooth checkout. Your boat deserves the best.
Read More
For more helpful marine maintenance guides, check out our article on New Saturn – Mercury (11 x 15″) Solas RH Propeller, 5331-110-15.
