WakeMAKERS Supra/Moomba Gravity III Ballast System Upgrade
Item: 42103-FH
Unfortunately, it's well known that the factory Gravity III ballast system installed in 2002-2008 Moomba and Supra boats has numerous flaws in terms of its design and functionality. Going back more than three years ago we pioneered the first Gravity III Ballast System Upgrade, and since then we've helped lots of unhappy owners fix the issues with the factory setup.
The next evolution of that upgrade is this complete package, which includes everything you need, pre-selected and guaranteed to work seamlessly to revamp the factory system that's currently installed in your boat. Our Gravity III Ballast System Upgrade includes everything you need to completely overhaul your factory setup in one convenient package that has been tested through countless installations.
After installation, which we've worked hard to make it as simple as possible, your boat's factory ballast system will essentially be upgraded to the 2009+ factory system which uses a dedicated reversible pump for each bag in the system. That means you can say goodbye to priming issues, slow and inconsistent fill times, and you'll also gain a dedicated vent/overflow connection for each bag. Get more weight in your boat in less time, and with no drama, just an easy to operate system that works like you expect every time.
How It Works
We reuse as much of the factory components as possible to offer value and ease of installation for our customers. Your factory ballast system uses a single common fill pump, which is a huge bottleneck if you are filling all three ballast locations, since the output of that pump is split in thirds.
Our upgrade replaces that single common fill pump with three reversible pumps so that each bag in the system has a dedicated pump for filling and draining. That means you have the full capacity of that pump available to fill each bag, drastically reducing the amount of time required to fill and drain the system.
What's Included
How It's Installed
Although we've worked as hard as possible to make this upgrade as easy to install as it can possibly be, there are some aspects of the installation that are unavoidable. Let's just get this out of the way right off the bat:
Additional holes will need to be drilled in the boat. There's just no way around it if we're going to fix the problems that are inherent with the factory system.
We've been selling ballast systems for a long time, and our customers are, understandably, always intimidated by this step of the process. We have some great video guides available that demystify this step of the process, so although it's intimidating, if you know how to use a drill, it's not difficult. Of course you can always have your local dealer or marine service shop drill the holes for you if you would prefer (and we're happy to ship your order directly to them for installation).
Outside of the drilling the holes, the rest of the installation is fairly straight forward, and consists of mounting the new pumps, running new hose to feed the system, and wiring the new pumps to your factory switches.
Click here to read our guide on installing Thru-Hull Fittings On Your Boat.
- Manufacturer Part Number
- 42103
- Item#
- 42103-FH
- Warning
WARNING
This product can expose you to chemicals including DINP (Diisononyl phthalate) and DIDP (Diisodecyl phthalate) which are known to the State of California to cause cancer. For more information go to https://www.p65warnings.ca.gov.
Best Price Promise
We want you to receive the best possible deal on your boating products. We match any authorized dealer's advertised price for the same in-stock item. What does that mean for you? If you find the same product in stock at another authorized retailer we'll gladly match their price delivered price. Don't forget that on top of our free fast shipping (on any order over $99 shipped to the Continental US) we also offer our exclusive lifetime technical support.
- WakeMAKERS Best Price Promise is only valid on products sold by factory authorized internet dealers.
- WakeMAKERS Best Price Promise is not available with any coupons or individual discounts.
- WakeMAKERS Best Price Promise is based on the delivered price for the item and will factor in shipping and tax charges.
- WakeMAKERS Best Price Promise is only available on an exact, in stock product with a displayed internet price (not price implied after promotions and coupons)
- WakeMAKERS Best Price Promise is not available to be applied retroactively, so please contact us us BEFORE placing your order.
If you have any questions about our price match policy, or if you would like us to match a price for you, simply contact us.
Note We have the right to refuse price matching at any time for any reason. In order to qualify for price matching, the item must be identical make, model, year, and part number, and must be in stock. Price matching excludes sale items and previously purchased products.
365 Day Returns
365 Day Returns Your satisfaction is our biggest priority, which is why we gladly accept returns on any new product for up to 365 days from the date your order ships. Refunds will be issued to the original payment method for up to 30 days from the original ship date. Returns on orders older than 30 days up to 365 days will be processed as store credit that can be applied to a future order.
For the full details of our 365 Return Policy, including any restrictions or exclusions, please visit the Returns & Exchanges section on Customer Service page.
Expert Advice
Our product experts bring over 40+ years of real-world experience and knowledge of the boating industry. They really know the gear, because they spend their free time out on the water with friends and family testing the products out.
Product Expert Phone Hours 9am - 5pm (PST) Monday - Friday
Product Expert Email We respond to most emails within 24-48 hours.
Looking for specific installation guides or instructional videos? Check out our Resource Section for detailed information.
WakeMAKERS Online Shopping Tools Our Finder tools are designed to help you pick the perfect product. We've simplified the complex process of finding the right ballast or prop for you boating style and made it easy by doing the research for you.
Our goal is simple; provide the best product, at the best price, with the best customer support.
Free Shipping On Orders Over $99
The last thing you want to do is pay to have your order shipped when shopping online, which is why we include free shipping on all orders over $99*.
*Free shipping offer applies to orders over $99 shipped within the Continental United States and cannot be combined with other discounts or promotions (including coupon codes).