Rubex L4 (15.25 x 28″) Solas RH Propeller, 9573-153-28

Introduction

If you’re searching for a high-performance stainless steel propeller to enhance your boat’s acceleration, handling, and top-end speed, the Rubex L4 (15.25 x 28″) Solas RH Propeller, 9573-153-28 for marine use is a top-tier solution. Engineered by Solas, this four-blade, right-hand rotation prop is tailored for boaters who demand optimal thrust and durability. With its large diameter and high pitch, the Rubex L4 is ideal for offshore applications, high-speed runs, and heavier loads — delivering performance where it matters most.

In this in-depth guide, we’ll walk through everything you need to know about the Rubex L4 — from design specs and compatibility to maintenance tips and expert insights. Whether you’re upgrading your outboard propulsion or replacing an aging propeller, understanding the Rubex L4’s capabilities will ensure you make an informed, confident decision.

Overview / What Is Rubex L4 (15.25 x 28″) Solas RH Propeller?

The Rubex L4 is a high-performance, 4-blade, stainless steel propeller built by Solas for marine propulsion systems. Designed for right-hand (RH) rotation, it measures 15.25 inches in diameter with a 28-inch pitch, making it a perfect fit for high-speed boats with powerful outboard engines (typically 150HP and above).

Part of the Rubex 4 series, the L4 is known for its exceptional grip in turns, excellent fuel efficiency, and high durability under intense marine conditions. Solas integrates advanced blade geometry and cupping into the Rubex L4, enhancing bite in the water while minimizing ventilation and cavitation issues.

Key Features and Benefits of Rubex L4 15.25×28

• Precision Casting: Manufactured with high-quality stainless steel for corrosion resistance and lasting reliability.
• Four-Blade Design: Provides smoother operation and better grip, especially in rough waters.
• Large Diameter: 15.25″ ensures strong thrust, ideal for heavier or offshore vessels.
• High Pitch: 28″ pitch delivers superior top-end speed while reducing engine RPM.
• Rubex Interchangeable Hub System: Makes installation, replacement, and compatibility easy.

This propeller is designed for marine enthusiasts looking for performance in offshore racing, heavy loads, or high-speed cruising. Its precise cupping and rake angles help in keeping your boat steady, while reducing drag and improving efficiency.

Compatible Engines for Rubex L4 Propeller

The Rubex L4 (9573-153-28) is compatible with various outboard motors ranging from 150HP to 300HP. Some commonly matched engines include:

• Yamaha 150-300 HP (4 3/4″ Gearcase)
• Honda 150-250 HP
• Suzuki DF150-DF300
• Mercury 150-300 HP (non-Verado)
• Johnson/Evinrude 150-300 HP

Always verify gearcase size and spline compatibility before purchasing. The Rubex L4 uses the interchangeable hub kit, which must be selected based on your engine model.

Maintenance Tips

Proper maintenance of your Rubex L4 stainless steel propeller not only extends its life but ensures continued performance. Here are some key maintenance tips:

• Regular Inspection: Check for bent blades, nicks, or marine growth every 25-50 hours of use.
• Grease the Spline: Prevent corrosion by applying marine grease to the propeller shaft splines at each removal.
• Remove After Season: Take the propeller off at the end of the boating season to prevent shaft corrosion and frozen parts.
• Clean with Mild Detergent: Avoid harsh chemicals. Use fresh water and a soft cloth to remove salt buildup.
• Check Hub System: Make sure the Rubex interchangeable hub is not worn or cracked before reinstalling.

By following these simple yet effective tips, you can avoid performance issues, enhance fuel efficiency, and prevent costly repairs.

Understanding Pitch and Diameter in Marine Propellers

The pitch of a propeller determines how far it moves forward in one rotation. A 28” pitch like that on the Rubex L4 is built for speed, enabling boats to travel faster while reducing the engine RPM at cruising speeds. However, higher pitch props require more engine torque and may affect acceleration if underpowered.

The diameter (15.25”) defines the size of the propeller disc and helps create more thrust. Larger diameters are ideal for heavy or offshore boats that need more lifting power and stability. The balance between pitch and diameter is key to maximizing performance.

Expert Advice and Pro Recommendations

If you’re a performance boater looking to push your engine’s potential, the Rubex L4 (15.25 x 28″) Solas RH Propeller is one of the best options available. It’s a particularly smart choice for offshore fishing, wakeboarding, high-speed cruising, or heavy-load hauling.

Always match your propeller to your engine’s RPM range and intended use. If unsure, consult with a marine expert or technician before purchase. The Rubex L4 is designed to give more lift, better fuel economy, and excellent cornering control.

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Rubex L4 Troubleshooting: Common Issues & Fixes

Despite its robust design, propeller issues can occur. Here are common problems and solutions:

• Cavitation: If you notice engine over-revving or poor thrust, check for marine growth or improper prop depth.
• Vibration: Often caused by bent blades or debris stuck between the propeller and lower unit.
• Loss of Speed: Could indicate pitch mismatch or hub slippage. Inspect the hub and consider switching pitch based on load.

Staying proactive with maintenance and inspecting your Rubex L4 routinely helps minimize these issues and ensures consistent on-water performance.

Detailed FAQ Section

What makes the Rubex L4 (15.25 x 28″) Solas RH Propeller different from other props?

The Rubex L4 stands out due to its four-blade configuration, which offers improved handling, faster hole shot, and excellent cornering stability compared to traditional three-blade props. Its 28-inch pitch is tailored for high-speed applications, helping reduce engine RPM while maximizing fuel economy and efficiency. The use of stainless steel gives it enhanced durability over aluminum props, making it ideal for saltwater and heavy-duty use.

How do I install the Rubex L4 propeller on my boat?

Installing the Rubex L4 is straightforward thanks to the Rubex interchangeable hub system. First, remove your old propeller and clean the shaft. Then, slide the new Rubex hub and propeller onto the spline, ensuring proper alignment. Tighten the propeller nut to the manufacturer’s torque spec and secure with a cotter pin. Refer to your engine’s manual or a marine technician for torque values and installation specifics.

Is the Rubex L4 suitable for saltwater use?

Yes, absolutely. The Rubex L4 is constructed from high-grade stainless steel, which offers strong corrosion resistance against saltwater exposure. Regular freshwater rinsing and seasonal inspection are still recommended, but its robust design is perfect for harsh marine environments and offshore boating activities.

Can I use the Rubex L4 with my 200HP Yamaha engine?

Yes. The Rubex L4 (15.25 x 28″) Solas RH Propeller is compatible with Yamaha 150-300HP engines that have a 4 3/4″ gearcase. Just ensure you’re using the correct Rubex hub kit for your Yamaha model. Compatibility with Yamaha is one of the Rubex L4’s strong suits, but always confirm hub spline specs before installation.

What’s the typical lifespan of a stainless steel Rubex L4 propeller?

With proper maintenance and use, a stainless steel Rubex L4 can last for over 5–8 years, sometimes even longer. It depends on boating frequency, water conditions, and care. Regularly inspect for dings, cracks, and corrosion, and always remove the prop during the off-season for best longevity.

Conclusion

For boaters looking for superior handling, durability, and speed, the Rubex L4 (15.25 x 28″) Solas RH Propeller stands out as a reliable, high-performance marine upgrade. Whether you’re tackling offshore waters or cruising inland, this prop delivers balanced power and long-lasting strength. Don’t compromise when it comes to propulsion — invest in a propeller that works as hard as you do.

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