My Cart


Dominate the Waters with Mercury Outboards

Unleash the Power of Mercury Outboards and Conquer Every Wave

Mercury Lower Unit Choices

Mercury Reman Lower

Remanufactured Mercury Lower Unit

  • Better prices compared to OEM Lower Units
  • Made in the USA by Certified Mechanics
  • All OEM Parts
  • Built new to manufacturer specifications 
mercury new lower unit 3.0l

Aftermarket Mercury Lower Unit

  • Better prices compared to OEM Lower Units
  • Aftermarket units are manufactured overseas & imported to USA.
  • All parts are Non-OEM
  • Built new to manufacturer specifications 
mercury V6 lower unit 1647-9148t85

New Mercury Lower Unit

  • Factory, Brand New  Lower Units
  • Built by your engine manufacturer
  • All parts are OEM
  • Includes all internal parts & is fully compatible and interchangeable with your engine

Hard to find Boat parts from Mercury

Looking for NLA Mercury parts? see our NLA parts inventory or find your desired Mercury parts from Boat parts finder below.

No Longer Available Mercury Boat Parts

Boat Parts Finder

Our key features


Most orders received by 1pm cst ship today! Use coupon code DISCOUNTSHIPPIN.


Buy the best, buy parts that last.  Stay out on the water, not in the shop.


Shop online for best savings. Over 2 Million Parts ready to ship today!

Beauty of Mercury Outboards

Mercury Marine stands as a beacon of innovation and quality in the world of outboard motors, providing boaters around the globe with engines that blend power, efficiency, and reliability. Established in 1939, Mercury has evolved from a small machine shop to a global leader in marine technology, consistently pushing the boundaries of what’s possible on the water.

A Legacy of Innovation: Mercury Marine’s journey began with the vision of its founder, Carl Kiekhaefer, who sought to create the best-performing, most reliable marine engines. This commitment to excellence has driven Mercury to continually innovate, leading to numerous industry firsts, including the introduction of the world’s first commercially available outboard engine with over 100 horsepower. Today, Mercury’s product line spans from portable outboard motors to sophisticated sterndrive and inboard engines, all designed to meet the diverse needs of boaters worldwide.

Commitment to Quality: At the heart of Mercury Marine’s success is an unwavering commitment to quality. Every Mercury engine is crafted with precision and rigorously tested to ensure it meets the company’s high standards for performance and durability. This dedication to quality means that when you choose Mercury, you’re choosing an engine that will reliably power your boating adventures for years to come.

Driving Sustainability Forward: Understanding the importance of environmental stewardship, Mercury Marine has been a pioneer in developing eco-friendly technologies that reduce emissions and improve fuel efficiency without sacrificing performance. Innovations like the Mercury Eco-Screen, a feature designed to promote fuel-efficient boating habits, underscore the company’s commitment to protecting our waterways for future generations.

World-Class Support: Beyond manufacturing superior engines, Mercury Marine is dedicated to providing exceptional customer support. With an extensive network of dealers and service centers worldwide, Mercury ensures that boat owners have easy access to expert maintenance, genuine parts, and comprehensive warranties. This global support system is a testament to Mercury’s commitment to ensuring every boating experience is enjoyable and hassle-free.

Most Asked Questions

What sets Mercury Marine apart?

Mercury Marine is distinguished by its 80-year legacy of innovation, offering top-performing marine engines tailored to diverse boating needs. From pioneering industry firsts to a global presence, Mercury continually pushes the boundaries of marine technology.

Mercury Marine prioritizes quality assurance, rigorously testing every engine to meet strict performance and durability standards. Crafted with precision, whether it’s a portable outboard or sophisticated inboard engine, Mercury engines promise reliability for years of boating enjoyment

Mercury Marine leads in eco-friendly innovations, developing technologies to reduce emissions and improve fuel efficiency without sacrificing performance. Initiatives like the Mercury Eco-Screen promote sustainable boating practices, demonstrating Mercury’s commitment to preserving our waterways for future generations.

US Boatworks is dedicated to customer satisfaction, ensuring a seamless and gratifying experience from outboard motor selection, boat parts selection or replacing  your Mercury lower unit.

US Boatworks is dedicated to keeping Mercury outboards on the water for many years to come. We do this by stocking thousands of NLA Mercury boat parts.  These boat parts are in stock and ready to ship the same day when you order by 1 pm cst.  Use our parts finder or call us with your serial # and we would be happy to help you identify and find the Mercury boat parts you need.

Customers can contact US Boatworks via call, text, or email to get expert assistance and ensure a great boating season.