Dominate the Waters with Mercruiser Outboards
Unleash the Power of Mercruiser Outboards and Conquer Every Wave
Different Lower unit choices for Mercruiser

Remanufactured Mercruiser Lower Unit
- Better prices compared to OEM Lower Units
- Made in the USA by Certified Mechanics
- All OEM Parts
- Built new to manufacturer specifications

Aftermarket Mercruiser 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

New Mercruiser Lower Unit
- Factory, Brand New Outdrives, Lower Units and Uppers
- 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 Mercruiser
Looking for NLA Mercruiser boat parts? See our NLA Mercruiser boat parts inventory or find current model Mercruiser parts from our boat parts finder below.
No Longer Available Mercruiser Boat Parts
Boat Parts Finder
Mercruiser Outboard Motor Parts Up to 25% Off!
US Boatworks stocks over 2 million new and used boat parts to meet all your needs. When you place your order online, save up to 25% off retail prices. Use our Mercruiser Sterndrive Boat Parts Finder to view engine drawings to find the manufacturer part number you need. Select that part and place it directly in your shopping cart. Online Mercruiser OEM parts inventory with microfiche lookup for Evinrude, Johnson, Mercury, Mariner, Force, OMC, Mercruiser and Volvo-Penta.
- Lower Units
- Manifolds
- Upper Driveshaft Assemblies
- Stern Drive Parts
- Power Packs
- Outdrives
- Steering Cables
- Carburators
- Fuel Pumps
- Upper Units
- Lower Driveshaft Assemblies
- Propellers
- Nuts, Bolts, Washers
Our key features
$4.95 SHIPPING
Most orders received by 1pm cst ship today! Use coupon code DISCOUNTSHIPPIN.
QUALITY OEM PARTS
Buy the best, buy parts that last. Stay out on the water, not in the shop.
25% OFF RETAIL PRICES
Shop online for best savings. Over 2 Million Parts ready to ship today!
Mercruiser Marine Engines at US Boatworks
For nearly four decades, US Boatworks has been a cornerstone in providing premium marine products and services to boating enthusiasts worldwide. Our dedication to quality and passion for the watercraft industry has led us to partner with leading brands like Mercruiser, renowned for their exceptional performance, reliability, and innovation on the water.
A Legacy of Excellence: Mercruiser has a rich heritage that spans back to [insert founding year], establishing itself as a trusted name in the marine industry. With a legacy built on innovation and excellence, Mercruiser engines have powered countless boating adventures, earning a reputation for durability and performance that surpasses expectations.
Unmatched Performance: At US Boatworks, we understand the importance of performance in maximizing your enjoyment on the water. Mercruiser engines are meticulously engineered to deliver unparalleled power, efficiency, and responsiveness, ensuring a smooth and exhilarating boating experience every time you set sail. Whether you’re cruising leisurely or pushing the limits, Mercruiser engines deliver the performance you demand.
Reliability You Can Depend On: When it comes to marine engines, reliability is paramount. Mercruiser engines are renowned for their robust construction and dependable operation, even in the harshest marine environments. Built to withstand the rigors of saltwater corrosion, rough seas, and prolonged use, Mercruiser engines provide peace of mind, allowing you to focus on enjoying your time on the water.
Comprehensive Range of Parts: At US Boatworks, we recognize the importance of maintaining and servicing your Mercruiser engine to ensure optimal performance and longevity. That’s why we offer an extensive selection of NLA (No Longer Available) parts, lower units, and upper units for Mercruiser engines. Whether you’re in need of replacement components or seeking to upgrade your engine, US Boatworks has you covered.
Expert Support: Our team of marine experts at US Boatworks is committed to providing you with the guidance and support you need to make informed decisions about your Mercruiser engine. Whether you have questions about maintenance, troubleshooting, or optimizing performance, we’re here to help every step of the way.
Experience the Mercruiser Difference: Join the countless boaters who have experienced the superior performance and reliability of Mercruiser engines. Explore our selection of Mercruiser products at US Boatworks and discover why Mercruiser remains a trusted choice for boating enthusiasts worldwide.
Jerry Gibson2025-06-20Trustindex verifies that the original source of the review is Google. Russell Peters2025-06-20Trustindex verifies that the original source of the review is Google. When calling in they/Tim had exactly what I needed for an older motor and I was able pick parts up that same afternoon! Great Mercury Dealer! Will be back. Nailbender B2025-06-20Trustindex verifies that the original source of the review is Google. These guys had a very hard to find part I was looking for. When I called, the man I spoke to was very helpful. Had immediate knowledge as to what I was asking. I was impressed. I was thankful to have been turned on to this company. I hope I don't need em again, but I know who to call for hard to find parts on my boat. Ricky Hornback2025-06-20Trustindex verifies that the original source of the review is Google. Very helpful and knowledgeable Stephen Colino2025-06-20Trustindex verifies that the original source of the review is Google. Knowledgeable, right part, good communication, fast Rod Robitaille2025-06-20Trustindex verifies that the original source of the review is Google. Found a part Mercury part that was discontinued for my 2011 90 efi. Without it I have to buy a new motor. I was expecting a used power fuel line and received a new one unopened. Got it in 2 days and I’m back on the water. Great Job Guys. Thanks. Lonnie Gulley2025-06-19Trustindex verifies that the original source of the review is Google. John John2025-06-17Trustindex verifies that the original source of the review is Google. Totally appreciate their professionalism! They make sure to verify and give the right part every time! They are the most knowledgeable team around for parts and repairing your boat/motor! They go above and beyond every time to ask questions on parts you may need that you haven’t even thought of. I went There the last time to buy an impeller for my water pump but after a quick discussion I ended up buying the kit! It just made since after talking to them and after I tore down the lower unit to replace the impeller for my water pump!? I’m sorry very glad I did! 10 outta 10 for their knowledge , service and expertise ! John coolidge2025-06-16Trustindex verifies that the original source of the review is Google. John Yohner2025-06-16Trustindex verifies that the original source of the review is Google. Everything went great except for a number wrong in my address and went to the wrong road but I found it and US Boatworks refunded the shipping charge. I'll buy from them again.
Most Asked Questions
What makes Mercruiser engines stand out in the marine industry?
Mercruiser engines, available at US Boatworks, boast a legacy of excellence spanning back to [insert founding year], earning a reputation for durability and performance that surpasses expectations. Crafted with precision engineering, Mercruiser engines have powered countless boating adventures, offering unmatched reliability and innovation on the water.
Where can I find parts for my Mercruiser Sterndrive?
At US Boatworks, we understand the importance of reliability when it comes to marine engines. We stock thousands of Mercruiser parts and can ship them the same day so you can get back on the water quickly.
US Boatworks also specializes in NLA hard to find boat parts for your Mercruiser engine. Feel free to shop our site or call us for help in identifying the parts you need. We sell only OEM quality parts to provide peace of mind, allowing boaters to focus on enjoying their time on the water.
What support does US Boatworks offer for Mercruiser engine owners?
US Boatworks is committed to providing exceptional support and assistance for Mercruiser engine owners. Our team of marine experts is available to address any questions or concerns about maintenance, troubleshooting, or optimizing performance. With an extensive selection of NLA parts, lower units, and upper units available, we ensure that Mercruiser engine owners have everything they need to keep their engines running smoothly for years to come.
How can customers ensure a positive experience with US Boatworks?
US Boatworks is dedicated to customer satisfaction, ensuring a seamless and gratifying experience from parts selection to decisions regarding replacement of a lower or upper unit.