Mercury Mariner Stainless Steel Propeller | Part Number 74597A4 | 15 x 19 | Left-Hand Rotation | Fits 90HP–300HP | 6-Month Hub Warranty

Product Overview

Upgrade your boat's performance with this genuine Mercury Mariner Stainless Steel Propeller, Part Number 74597A4. Designed for select Mercury and Mariner outboard and sterndrive engines from 90HP to 300HP, this high-quality 15" x 19" three-blade stainless steel propeller delivers excellent durability, efficient power transfer, and dependable performance in a wide range of boating conditions. Featuring left-hand (counter-rotation) configuration, this propeller is intended for the counter-rotating side of compatible twin-engine setups. Constructed from durable stainless steel and equipped with an installed Mercury hub, it offers superior strength and long service life compared to aluminum propellers. Professionally inspected before sale, this propeller is ready for installation and backed by a 6-Month Hub Warranty.

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Key Features

• Genuine OEM Mercury Mariner Stainless Steel Propeller
• OEM Part Number: 74597A4
• Three-Blade Design
• 15" Diameter x 19" Pitch
• Left-Hand (Counter-Rotation)
• Durable Stainless Steel Construction
• Mercury Hub Installed
• Professionally Inspected
• Ready for Installation
• 6-Month Hub Warranty

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Technical Specifications

Specification	Details
Brand	Mercury / Mariner
Product Type	Stainless Steel Propeller
Condition	Pre-Owned
OEM Part Number	74597A4
Alternate Part Numbers	48-74597A4, 13241A50
Diameter	15 Inches
Pitch	19 Inches
Rotation	Left-Hand (Counter-Rotation)
Blade Count	3
Material	Stainless Steel
Gearcase	4-3/4"
Spline Count	15
Hub	Mercury Pressed Hub Installed

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Compatible Applications

Designed for select Mercury and Mariner outboard and sterndrive applications including: Horsepower

• 90 HP through 300 HP

Gearcase

• 4-3/4" Gearcase

Model Years

• 1978 and Newer

Rotation

• Left-Hand (Counter-Rotation)

Important: This propeller is designed for left-hand counter-rotating applications, commonly used on the port side of twin-engine installations. Always verify your engine rotation, spline count, gearcase size, and part number before purchasing.

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Condition

This genuine Mercury stainless steel propeller is in excellent used condition. The propeller has been professionally inspected and features:

• No bent blades
• No chipped blade edges
• Minor cosmetic wear consistent with normal use
• Mercury hub installed and in good condition
• Ready for installation

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What's Included

Your purchase includes:

• Mercury Mariner Stainless Steel Propeller
• OEM Part Number 74597A4
• Installed Mercury Hub

Only the components shown in the product photos are included.

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Shipping Information

Every propeller is carefully packaged to protect the blades and hub during shipping. We offer fast shipping throughout the United States, with international shipping available upon request. For an accurate shipping quote, please provide:

• Country
• ZIP or Postal Code
• Commercial or Residential Address

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Warranty

This propeller includes a 6-Month Hub Warranty. If the installed hub fails under normal operating conditions during the warranty period, EZ Boats Marine will replace the hub or provide a suitable resolution in accordance with our warranty policy.

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Why Buy from EZ Boats Marine?

• Genuine OEM Mercury and Mariner Parts
• Professionally Inspected Propellers
• Stainless Steel Construction for Maximum Durability
• Mercury Hub Installed
• 6-Month Hub Warranty
• Fast Nationwide and International Shipping
• Secure Packaging
• Competitive Pricing
• Trusted Source for Outboard Motors and Marine Parts

EZ Boats Marine is committed to supplying quality OEM marine components that deliver reliable performance and exceptional value.

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Frequently Asked Questions

Which engines does this propeller fit?

This propeller fits select Mercury and Mariner outboard and sterndrive engines from 90HP to 300HP using a 4-3/4" gearcase and 15-spline propeller shaft. Always verify compatibility before ordering.

Is this a left-hand or right-hand propeller?

This is a left-hand (counter-rotating) propeller designed primarily for the port side of compatible twin-engine installations.

What are the propeller dimensions?

This propeller measures 15 inches in diameter with a 19-inch pitch and features a three-blade stainless steel design.

Is the hub included?

Yes. The propeller includes a Mercury pressed hub that is already installed and has been inspected for proper condition.

Does this propeller include a warranty?

Yes. The installed hub is backed by a 6-Month Hub Warranty against hub failure under normal operating conditions.