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mercury lower unit

3 JAW Reverse VS 6 JAW Reverse

mercury lower 3jaw vs 6jaw

Clutch Dog Configuration for Mercury 3 & 4 Cylinder Lower Units View our available lower 3 dog reverse and 6 dog reverse lower units here

How to change oil for a Mercury Outboard

Watch this video learn how to change your outboard engine oil.
Mercury Marine recommends that you change your oil at least every 100 & 300 hours. Of course, change the oil more frequently as needed.

The Truth About Gearcase Replacement

FourStroke 40 60hp BigFoot Gearcase

Gearcase Replacement Course Thanks for checking out my crash course on REPLACEMENT GEARCASES. My name is Mike Tracy, the owner and founder of US Boatworks. We are a company on a mission to help boaters select the best replacement gearcase available. My goal for this course is to provide you with all the information needed to […]

Just Dropped – Mercury Bigfoot Lower Unit

9011G92 Mercury Bigfoot Lower Unit 30-50 HP

USBoatworks now carries the hard to find Mercury 30-50 HP Bigfoot lower unit. This lower fits Mercury Outboard Motors with Bigfoot Lower Units. It replaces OEM # 1667-9011G92. There are many reasons to purchase a rebuilt lower unit over buying new or aftermarket units.   Those reasons are: -Units are priced at deep discounts to save […]

Tips for Replacing your Outboard Lower Unit

The main part of the lower unit of an outboard motor is really nothing more than the gear case. The gear case is also known as the “business end” of the boat lower unit. When most boaters talk about changing the lower unit they are talking about disconnecting the speedometer cable, removing the gear case, […]

Our Most Popular Seller – The Evinrude Gear Case

Mercury Lower Unit 1667-9011G90

Our #1 Seller – The Evinrude Lower Unit Evinrude Lower Units are a big seller at US Boatworks where we specialize in gearcase rebuilding. Let’s take a look at why we are a leader in the the lower unit remanufacturing arena. US Boatoworks has been in the replacement drive business for 30 years and we […]

Marine Lower Units In Stock

Go to Lower Units page

US Boatworks stocks over 2 million boat parts which makes for quick same day shipping when you place your parts order.  Lower Units are our specialty so I thought we could take a look at the gear cases and lower unit parts in our parts room.  The parts reviewed below are the components that go […]

Twin Mercury Outboards at the Zoo

KC Zoo's twin 9.9 horse Mercury Motors

Our family had a rare treat this weekend, a free Sunday afternoon and beautiful weather.  We packed up the kids and headed out to the Kansas City Zoo to check out the new polar bear exhibit.  As luck would have it, we arrived just in time for the afternoon Polar Bear feeding.  Watching the bear […]