Aftermarket Upper Units
Aftermarket Upper Units at US Boatworks

If you are looking for a replacement upper for your sterndrive engine, you have come to the right place. US Boatworks offers new aftermarket uppers for the budget conscious boater.
Benefits of an aftermarket upper:
- 3 year, fault free warranty
- Better price over OEM units
- Non-OEM Aftermarket Parts
- Optional core return rebate if you have a good OEM core
- Built new to manufacturer specifications
- Compatible & interchangeable with OEM drives
- Usually ships in 24 hours
For Quality Rebuilt Uppers for Mercruiser, Volvo and OMC, Go Here
Advantages of Aftermarket Upper Units
Boating is all about freedom, adventure, and making lasting memories on the water. To ensure those memories are positive, it’s essential that every component of your boat is working in harmony. This is especially true for the sterndrive’s upper unit, a critical part of your boat’s propulsion system. While OEM (Original Equipment Manufacturer) parts are a popular choice, there’s a strong case to be made for considering aftermarket upper units. Let’s explore the advantages of going aftermarket, in simple and straightforward terms.
Cost-Effectiveness One of the most immediate benefits of choosing an aftermarket upper unit is the cost savings. Aftermarket parts are often significantly more affordable than their OEM counterparts, allowing you to save money without necessarily sacrificing quality or performance. It’s like finding a great deal on a quality pair of running shoes – you get the performance you need at a fraction of the price.
Wide Selection Imagine walking into a store and finding a vast selection of shoes in every style and for every need. That’s similar to the variety you’ll find in the aftermarket world. Aftermarket upper units are available from a range of manufacturers, offering you more options to find the perfect fit for your boat and your specific boating style.
Comparable Quality and Performance There’s a common view that aftermarket means lower quality. Many aftermarket upper units are manufactured to meet or even exceed OEM specifications.
Availability If you’ve ever tried to find a specific part for an older model boat, you know how challenging it can be. Aftermarket upper units often provide a solution to this problem, with parts available for a wide range of makes and models, including those that may no longer be supported by OEM manufacturers. This availability can be a lifeline for keeping older boats in top condition.
Expert Support We, at US Boatworks, are always there for you in case you need assistance for your Aftermarket Upper unit selection. You can call us or text us directly using the links provided below.
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
How do aftermarket upper units offer cost savings compared to OEM parts?
Aftermarket upper units are generally more affordable than OEM parts, providing significant cost savings without compromising on quality or performance. This affordability allows you to maintain or enhance your boat’s performance at a lower cost, similar to finding a high-quality pair of running shoes at a fraction of the price.
What kind of selection can I expect with aftermarket upper units?
The aftermarket offers a vast selection of upper units from various manufacturers, giving you more options to find the perfect match for your boat and boating style. This wide range ensures you can find units with different features and innovations not always available with OEM parts, much like walking into a store with shoes for every need and preference.
Are aftermarket upper units reliable in terms of quality and performance?
Many aftermarket upper units are manufactured to meet or exceed OEM specifications, offering comparable or even superior quality and performance. Advances in technology and manufacturing processes enable some aftermarket brands to produce parts that ensure your boat operates smoothly and reliably on every outing.
How can customers ensure a seamless and gratifying experience with US Boatworks?
US Boatworks is dedicated to customer satisfaction, ensuring a seamless and gratifying experience from selection to ownership of the boat lower unit.