MERCURY 28403A3 Thumb Screw Clamp Outboard Boat Motor 50HP

( Manufacturer Part Number: 28403A3 ), ( Part Type: Screw Clamp Motor )

Review MERCURY Lot Of 50hp Thumb Screw Clamp Outboard Boat Motor fits 70S 1970

Mercury 28403A3 70s 50hp Thumb Screw Clamp Outboard Boat Motor (70)

Experience the epitome of power and reliability with the Mercury 28403A3 70s 50hp Thumb Screw Clamp Outboard Boat Motor. This classic 70-pound masterpiece, hailing from the 70s, is a testament to Mercury's unwavering commitment to quality and innovation.

The 28403A3 is a 50hp powerhouse, designed to deliver an exhilarating boating experience. It boasts a thumb screw clamp design, allowing for easy and secure mounting onto your boat. This motor is not just powerful, but also compact, ensuring minimal intrusion into your boat's deck space.

The motor is equipped with a reliable 2-stroke engine, which offers a quick and responsive power delivery. It features a high-quality, corrosion-resistant material construction, ensuring durability and longevity despite exposure to harsh marine environments.

The 28403A3 is also known for its excellent fuel efficiency. It is designed to deliver optimal performance while minimizing fuel consumption, helping you save on costs and reducing your environmental footprint.

This outboard motor comes with a conveniently located control panel, allowing for easy access to essential functions. It is designed with the boater in mind, offering a user-friendly experience that makes boating enjoyable and hassle-free.

Whether you're a seasoned boater or a novice just starting your nautical journey, the Mercury 28403A3 70s 50hp Thumb Screw Clamp Outboard Boat Motor is a reliable companion that will help you navigate the waters with confidence and enjoyment. Experience the legacy of Mercury Marine and upgrade your boating experience with this iconic motor.

Pros, Cons, and Recommendation for the Mercury 28403A3 70HP Thumb Screw Clamp Outboard Boat Motor

1. Power: With a 50HP output, this motor provides ample power for a variety of boats and water activities.

2. Reliability: Mercury is a well-known brand, and this model is known for its durability and dependability.

3. Easy Installation: The thumb screw clamp system makes installation and removal faster and easier compared to traditional methods.

4. Adjustable Trim: The adjustable trim allows for optimal performance in different water conditions.

5. Maintenance: The motor is designed for easy maintenance, with accessible parts and a service-friendly design.

1. Price: As a high-performance motor, it comes at a higher price point compared to less powerful models.

2. Weight: At 354 lbs (160 kg), it may be too heavy for smaller boats or for individuals to handle alone.

3. Noise Level: Some users have reported the motor to be relatively loud, which could be a concern for those seeking a quieter boating experience.

The Mercury 28403A3 70HP Thumb Screw Clamp Outboard Boat Motor is a reliable and powerful option for those looking to upgrade their boat's propulsion system. Its ease of installation, adjustable trim, and service-friendly design make it a convenient choice. However, potential buyers should consider its high price point, weight, and noise level before making a decision.

If you have a larger boat, a need for high performance, and the means to handle its weight, this motor could be an excellent choice. For smaller boats or those seeking a quieter experience, it may be worth considering less powerful or quieter options. Always ensure that the motor is compatible with your boat's specifications before purchase.

Details:

Estate sale find. And extra cover. Check pics for condition and am what all is included.

part #: 28403a3 prices

• $39.95-$85.00

specifications ouboaen:

• for models: 70s
• for makes: Mercury
• for years: 1970
• mpn: 28403a3
• part type: Screw Clamp Motor

general ouboaen:

• Boat Parts > Outboard Engines Components > Mounting Brackets
• condition: Used

offer ouboaen:

• quantity: 1
• started: March 8, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0

returns ouboaen:

• policy: No Returns

shipping ouboaen:

• carrier: UPS
• type: Fixed
• transit: 4-9 Days
• cost: $9.03
• service: UPS Ground
• class: Standard

seller ouboaen:

• rating: 99.5%
• # reviews: 857
• city: Wooster, Ohio

payments ouboaen:

• credit card: Visa
• wallet: Paypal
• other

Mercury 28403A3 Is Similar To:

• 000123 Mercury Fuel Filter Safety Change Lot Nip Nos Nla (32.8% similar) ...(May 4th, 2018)
• 031026 Michigan Propeller Aluminum Prop Mercruiser Mercury Outboard (23% similar) Pb this prop has some minor damage as seen in the pictures. Please see included pictures. Condition: used but in good condition and guaranteed to function properly. This prop will also fit v6 Honda outboards with the correct hardware. 75 x 21P Mercuries mercury outboard propeller fits various ...(April 3rd, 2018)
• 06168-zy1-307 Honda Mercury Outboard Electric Circuit Breakers (29.9% similar) Products might fit other makes and model's, please research before assuming. Thanks in advance. Have up for sale good quality tested parts that a satisfactory guarantee. These products have been used and will average wear look feel to them...(April 9th, 2018)
• 10-30110 Mercury Lot Of Oem Outboard Screws New Free Shipping (42.1% similar) Lot of 2 oem mercury screws w lock washers used on some vintage mark outboard engines. Please verify comparability before purchase...(April 15th, 2018)
• 10-34691 Mercury Mariner Bulk Lot Pieces Old Stock Outboard Force Chrysler (42.5% similar) This is a bulk lot of new parts for mercury mariner force outboard nos Nola 200 individual part numbers in factory bags with most being multi PACKS1500 total pieces packed USPS medium flat rate box flax...(February 9th, 2019)
• 10-36070 Green Bay Prop Mercury Mariner Mercruiser Marine Engine Screw (23.9% similar) Quicksilver screw, 5-PACKFOR use on many mercury mariner outboards and Mercuries stern drives. Over 120 marine engines use this screw...(July 12th, 2018)
• 10-38055 Mercury Lot Of Oem Outboard Hinge Plate Screws Quicksilver New (43.4% similar) This fee covers the initial shipping cost regardless of label free. Lot of 4 oem mercury outboard hinge plate screws - quicksilver please verify compatibility before purchase...(February 21st, 2019)
• 10-79953q 2 Mercury Gearcase Drain Plug Screw Kit Pack Two (33.8% similar) Each kit contains two gear case drain screws. These are oem quick silver mercury Mercuries parts, another tremendous ileum value...(April 12th, 2018)
• 10-90084 Mercury New Oem Screw 745061207363 (31.3% similar) Brand new, genuine mercury marine Mercuries screw...(December 3rd, 2018)
• 100-25-20 6h4-11631-01-95 9009a5 9009a13 9009 Mercury Outboard Hp Bottom Guided Rebuild Kit (27% similar) ...(March 14th, 2018)
• 1004211wk Mercury 4 Hp Outboard (38.8% similar) It has been garaged stored up right and covered. For sale is a lightly used mercury 4 hp outboard motor model ml. This motor has not been operated in a while. I am the original owner and purchased this outboard new for use on my sailboat. The outboard model number is 1004211WK it considered a 2-...(July 12th, 2017)