MERCURY 703855 Clutch Sheave

( Manufacturer Part Number: 703855 ), ( Part Type: Clutch )

Review MERCURY Vintage Snowmobile Fixed Primary Clutch Sheave

The Mercury 703855 Clutch Sheave is an essential component of Mercury outboard motor assemblies. This clutch sheave is meticulously engineered to provide efficient power transfer between the engine and the drive system, ensuring optimal performance and reliability.

Constructed from high-quality materials, this clutch sheave boasts a robust and durable design. Its outer diameter measures 2.75 inches (69.85 mm), while its inner diameter is 1.75 inches (44.45 mm), which makes it suitable for specific Mercury outboard motor applications. The sheave features a smooth, ribbed surface that is designed to minimize friction and wear, thereby prolonging the life of the belt and reducing the need for frequent replacements.

The Mercury 703855 Clutch Sheave is precision-machined to ensure a perfect fit and alignment with the engine and drive system components. Its precise dimensions and tolerances ensure that the belt runs true, reducing the risk of belt slippage and ensuring that the power is transmitted efficiently.

This clutch sheave comes with a pre-installed, high-strength clutch disc that is designed to provide consistent and reliable engagement between the engine and the drive system. The clutch disc features a unique, ribbed design that enhances its grip on the engine and drive system components, ensuring smooth and efficient power transfer.

The Mercury 703855 Clutch Sheave is easy to install and requires no special tools or techniques for replacement. Its O-ring seal ensures a tight and leak-free connection, preventing the ingress of water and other contaminants that could damage the engine or drive system components.

In summary, the Mercury 703855 Clutch Sheave is a high-performance, durable, and reliable component that is essential for optimal performance and longevity of Mercury outboard motors. Its smooth, ribbed surface, precise dimensions, and high-strength clutch disc ensure efficient power transfer, reducing the need for frequent replacements and ensuring years of trouble-free operation.

Mercury 703855 Clutch Sheave: A Comprehensive Analysis

The Mercury 703855 clutch sheave is an essential component in the marine driveline system. It connects the engine to the transmission via a drive belt. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this Mercury clutch sheave.

1. Superior Quality: Mercury Marine is a reputable brand known for manufacturing high-quality marine parts. The 703855 clutch sheave is no exception. It is built to withstand the harsh marine environment and deliver reliable performance.

2. Easy Installation: The clutch sheave is designed to be a direct replacement for the original equipment. This means that the installation process is straightforward and does not require any significant modifications to the engine or transmission.

3. Enhanced Durability: The clutch sheave is engineered with robust materials, such as cast iron, to ensure longevity. It can withstand the extreme temperatures and vibrations that are common in marine applications.

4. Improved Performance: A worn-out clutch sheave can lead to power loss and reduced engine efficiency. By replacing it with a new Mercury 703855 clutch sheave, you can restore the engine's performance and improve its overall efficiency.

1. Cost: The Mercury 703855 clutch sheave is a premium product, and its price reflects its quality. Compared to aftermarket alternatives, the Mercury clutch sheave can be more expensive.

2. Availability: Due to its popularity and high demand, the Mercury 703855 clutch sheave may be difficult to find in local marine parts stores. You may need to order it online or through a dealer, which could lead to longer wait times.

3. Weight: The clutch sheave is a relatively heavy component, weighing around 10 pounds. This could make it more challenging to transport and install, especially for those without access to a boat hoist or lifting equipment.

The Mercury 703855 clutch sheave is a top-tier marine part that offers numerous advantages, including superior quality, easy installation, enhanced durability, and improved performance. However, it also comes with some drawbacks, such as cost, availability, and weight.

If you are in the market for a new clutch sheave for your Mercury marine engine and are willing to invest in a premium product, the Mercury 703855 clutch sheave is an excellent choice. Its robust design, ease of installation, and reliable performance make it a worthwhile investment for boat owners who demand the best from their marine equipment. However, if you are budget-conscious or prefer aftermarket alternatives, you may want to explore other options before making your final decision.

Details:

All vintage parts sold as is. NOTE: This is OEM Mercury Not aftermarket. RARE Find for restoration project or accessory show sled. NOTE: No box, may have slight shelf wear.

Please view all photos before buying. You are buying on a NOS Mercury part# 703855 fixed primary clutch sheave.

part #: 703855 price

• $35.00

specifications clutcdrivbel:

• for makes: Mercury
• mpn: 703855
• part type: Clutch

shipping clutcdrivbel:

• service: USPS Ground Advantage
• type: Fixed
• transit: 5-11 Days
• cost: $16.50
• carrier: USPS
• class: Standard

seller clutcdrivbel:

• city: Wessington Springs, South Dakota
• rating: 100.0%
• # reviews: 139

payments clutcdrivbel:

• other
• wallet: Google-pay
• credit card: Mastercard

returns clutcdrivbel:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer clutcdrivbel:

• started: March 6, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 1

general clutcdrivbel:

• condition: New other see details
• Parts Accessories > Snowmobile Parts > Clutch Drive Belts

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