Most orders placed by 1 pm cst ship today!

Shop OEM boat parts by manufacturer:

The Most Reliable Rebuilder in the US

LOWER UNITS

Priced at deep discounts to save you money All units include a full year warranty.
BROWSE

Over 2 Million OEM Parts Ready to Ship Today

PARTS & ACCESSORIES

Your professional choice for reliable, high-quality marine parts. Most orders ship the same day!
LEARN MORE

New and Used OEM Parts Available

HARD TO FIND PARTS

Discover thousands of hard to find parts from Mercury, Mercruiser, Evinrude, Johnson, OMC and Volvo Penta.
BROWSE

Shop all of our brands:

LundWC-25hp-Fishing-274

US Boatworks stocks over 2 million new and used OEM boat parts to keep you out on the water longer. When you place your boat parts order online, save up to 25% off retail prices. Use our parts finder to view engine drawings to find the manufacturer part number you need.  Select that part and place directly in your shopping cart. Online discount marine parts inventory with microfiche look up for Mercury , Evinrude, Johnson, Mariner, Force, OMC, Mercruiser and Volvo-Penta.

At US Boatworks, we want to see you back out on the water. One of the ways we do so is by stocking thousands of NLA, new old stock boat parts. If you are looking for hard to find, old boat parts, US Boatworks is your solution. You will need to contact us if your boat part has been deemed “NLA” because many of our NOS parts are not available in our online store. Call, text or email us for assistance. We are always happy to help.

Another way we keep you out on the water is by offering replacement lower units and sterndrive gearcases. Choosing the right replacement Lower Unit for your needs is very important and we are here to help. No matter which gearcase you choose, you can feel comfortable knowing US Boatworks will take excellent care of you. We have been in the Replacement Drive business for over 37 years and know your motor inside and out. Our personalized service team will get your unit to you with the exact specifications you need at great pricing. Call us now or check out our gearcases ready to ship now.

USBOATWORKS

Visit our online parts store to buy high-quality genuine OEM boat parts at prices up to 25% below retail.

COUPON CODE

Most online orders ship for $4.95 when you use our coupon code.

Free Shipping

Fast shipping. Most orders placed by 1 pm cst ship the same day!

Trust Us!

Over 37 years Replacement Drive business. We know your motor inside and out.

40hp Mercury Outboard with Tiller
boating
btracy

Now In Stock- Mercury Outboard Motors

9.9 Outboard Motors for Sale It’s been an exciting week at US Boatworks. We have 8 new 2023 Mercury Outboards on the showroom floor. Four of these shiny new Mercury motors for sale have 9.9 horse power and offer several different options such as electric start, tiller handle, long or short shaft

Read More »
boating
btracy

The Truth About Replacement Gearcases #5

The Best Gearcase Replacement Welcome to part 5 of Gearcase Education.  The previous articles have reviewed common gearcase terminology and discussed the three ways you can replace your lower unit.  Those were: So now you have the knowledge and can decide for yourself what unit is best for you.  

Read More »
boating
btracy

The Truth About Replacement Gearcases #4

Quality Remanufactured Lower Units Welcome to part 4 of our gearcase education course. In the previous articles, we reviewed both the OEM Lower Unit and the Non-OEM Lower Unit. In this article, we have a frank discussion about the rebuilt gearcase. So let’s get to it. A rebuilt or remanufactured

Read More »

Win a Free Mercury T-Shirt

Join us to receive great boat maintenance tips and coupons & be entered in a raffle to receive a free T-Shirt.