11" Propeller Safety Guard – Fits Outboard Motors 25-35 HP (Polypropylene Marine Thruster Protective Cover)

11" Propeller Safety Guard – Fits Outboard Motors 25-35 HP

This 11" propeller safety guard is designed for outboard motors in the 25-35 HP range, providing a protective cage around the propeller. It is constructed from high-visibility orange, marine-grade polypropylene and fits most major outboard brands, including Mercury, Johnson, Evinrude, Yamaha, Suzuki, and Honda.

This is a direct replacement for NorthBoat 11", GlückMarine 11", and other 11" propeller guards.

• Installation is straightforward, bolting directly to the cavitation plate without requiring drilling on most models.
• Compatible with propellers up to 10.5 inches in diameter.
• Package includes a complete mounting hardware kit for installation.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson Serial Number Guide.

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For Suzuki owners, You can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Propeller Safety Guard
• 6 x Short Bolts
• 4 x Long Bolts
• 1 x 1/3" Drill Bit

Installation Guide

1. Safety First: Ensure the engine is off and the outboard is tilted up. For safety, disconnect the engine's battery and remove the key.
2. Position the Guard: Place the two halves of the propeller guard around the propeller unit, ensuring it is centered.
3. Align with Cavitation Plate: Line up the mounting holes on the top of the guard with the underside of the engine's cavitation plate.
4. Secure the Hardware: Use the provided short and long bolts to attach the guard to the cavitation plate. The different bolt lengths accommodate various engine designs.
5. Tighten Securely: Hand-tighten all bolts first to ensure correct alignment, then use a wrench to tighten them securely and evenly. Do not overtighten.
6. Final Check: Once installed, manually rotate the propeller to ensure it does not make contact with the guard at any point. Reconnect the battery.

Troubleshooting & FAQ

Q: How do I confirm this fits my 25-35 HP engine?

A: Beyond the HP rating, verify two key measurements. First, ensure your propeller's diameter is 10.5 inches or less. Second, measure the distance from the center of the propeller shaft to the underside of the cavitation plate; it must be between 5.75 and 6.5 inches for a proper fit.

Q: Does installation require drilling?

A: For most compatible models, the guard is designed to bolt directly to the cavitation plate using existing mounting points, so no drilling is required. A complete hardware kit with multiple bolt sizes is included. A drill bit is included for models that may require custom fitting.

Q: Is there a maximum speed I should be aware of when using this guard?

A: Yes. This propeller guard is not recommended for use at speeds exceeding 30 mph, as high speeds can put excessive stress on the guard and its mounting hardware.

Q: What is the guard made of?

A: The guard is injection-molded from a durable, impact-resistant Marine Grade Polypropylene. The bright orange color enhances visibility in the water for safety.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.