Will the 9" Outboard PropGuard fit my 9.9-20 hp outboard engine?

The 9" Outboard PropGuard is designed to fit most 9.9-20 hp outboard engines. For engines with Big Foot or High Thrust applications, you may need the next size up. If you are unsure about compatibility, please contact us with your engine details before purchasing.

What are the main benefits of installing a propeller guard on my boat?

Installing a propeller guard, like the 9" Outboard PropGuard, enhances safety for swimmers, divers, and marine life, protects your propeller from rocks and underwater hazards, and enables safer operation in shallow waters. It also reduces the chance of rope tangling and provides greater confidence for novice boaters.

How is the 9" Outboard PropGuard installed on my outboard motor?

The Propeller Guard is installed using a specially designed clamp system with bolts. The two halves of the guard attach clamshell-style to the cavitation plate and skeg of your outboard motor. Full installation instructions are included with your purchase for a secure and straightforward fit.

Is the 9" Outboard PropGuard compatible with OEM parts and marine regulations?

Yes, this propeller guard is a high-quality aftermarket part that is fully compatible and interchangeable with OEM components. It is produced to meet or exceed marine engine standards and complies with European marine regulations and quality laws.

What material is the 9" Outboard PropGuard made from, and how durable is it?

The 9" Outboard PropGuard is manufactured from high-impact polypropylene, making it highly durable and resistant to impacts and harsh marine conditions. It is designed for long-lasting protection and reliable performance on the water.

9" Yellow Outboard Propeller Guard Safety Cage For 9.9hp 15hp 20hp Boat Engines

Black 9-inch outboard propeller guard in angled view on white background, marine accessory

Black 9-inch outboard propeller guard front view, marine accessory from 4Boats UK

Black 9-inch outboard propeller guard, side view, marine accessory from 4Boats UK

Installed black 9-inch outboard propeller guard on a boat motor, marine accessory

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£155.00 £135.00 Save £20.00

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9" Outboard Propeller Guard (Yellow)

Premium Safety & Performance Protection

This 9-inch (23cm) Safety Yellow Propeller Guard is a precision-engineered two-piece injection-molded cage designed to provide total protection for your propeller. Ideal for rescue boats, dive boats, and family vessels, it significantly reduces the risk of prop-strike injuries to swimmers and marine life while shielding your blades from underwater debris and rocks.

RELIABILITY: Manufactured from high-impact, reinforced polypropylene. This non-corrosive guard is built to withstand harsh marine environments and improve fuel efficiency by creating a nozzle effect that increases thrust.

Key Features

✔ High-visibility yellow for water safety
✔ Increases propeller thrust and efficiency
✔ Reduces fuel consumption & steering torque
✔ Easy 30-minute installation (Bolts included)

Technical Specs

Internal Diameter:	9" (229mm)
Max Prop Diameter:	8.5"
Material:	Reinforced Polypropylene
Recommended Speed:	Up to 25-30 mph
Color:	Safety Yellow

Compatibility / Fitment Guide

Engine Brand	Horsepower Range	Notes
Yamaha	9.9hp, 15hp, 20hp, 25hp	Fits standard gearcase models
Mercury / Mariner	9.9hp, 15hp, 20hp	Excludes Big Foot / High Thrust
Suzuki	9.9hp, 15hp, 20hp	Fits 2-Stroke & 4-Stroke
Honda	8hp, 9.9hp, 15hp, 20hp	Fits most standard shafts
Tohatsu / Nissan	9.8hp, 15hp, 18hp, 20hp	Universal fit for 9" props

OEM Cross Reference

4Boats SKU	198165 / 5204981981654
Propeller Pros	PG-09Y / PROPGUARD YELLOW
BHG Marine	PRO9
Force 4	630368-S

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and safety performance.

How do I know if it is compatible?

We recommend checking the SKU/MPN and Cross Reference list provided above. If your outboard is between 9.9HP and 20HP and has a propeller diameter of 8.5 inches or less, this 9-inch guard is the correct fit.

Will this fit a Mercury Big Foot or Yamaha High Thrust motor?

No. Big Foot and High Thrust models utilize a larger gearcase and larger diameter propellers. For those specific models, you generally require the 11-inch (Orange) propeller guard.

Note: Please verify your motor's gearcase type and propeller diameter before purchasing. Speed is not recommended to exceed 25-30mph with the guard installed. Visit 4boats.co.uk for more technical support.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

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9" Yellow Outboard Propeller Guard Safety Cage For 9.9hp 15hp 20hp Boat Engines