100% MONEY BACK GUARANTEE
2 YEAR WARRANTY
10% OFF 1ST ORDER
$12 FLAT-RATE SHIPPING (US)
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STOP FUEL CAP LEAKS!
stop
LEAKS
FUEL CAP
TRUSTED BY COMPANIES LIKE
HOW IT WORKS
The Leak Defender® is a 2-piece fuel neck replacement system consisting of a collar & cap.
2-PIECE FUEL NECK ADAPTER
The collar replaces your old, worn fuel neck & is securely fastened with set screws.
REPLACES YOUR OLD FUEL NECK
It’s machined from billet aluminum allowing it to be made with a high degree of precision & strength.
CONSTRUCTED FROM BILLET ALUMINUM
MORE THAN JUST A SHINY NEW FUEL CAP
The Leak Defender® is a 2-piece fuel neck replacement system consisting of a collar and cap.
The collar creates a completely NEW sealing surface and replaces your old, worn fuel neck. And, yes, this will attach to a fuel neck where the threads are completely worn/stripped and fuel caps no longer seal. In fact, this is why we invented the product!
REPLACES YOUR FUEL NECK
The collar has an o-ring underneath which seals to your existing fuel neck when tightened with a strap wrench and is securely fastened with set screws. It is sealed along the outer perimeter, away from the inner perimeter which is prone to wear and tear from everyday fueling.
CONSTRUCTED FROM BILLET ALUMINUM
It’s machined from billet aluminum allowing it to be made with a high degree of precision & with the strength to withstand everyday wear & tear.
AVAILABLE FOR
5 STAR REVIEWS
The Leak Defender is the best product out there! After trying many solutions and nothing working, we found your website and gave it a shot. Your gas caps are the best. We haven’t had any more issues with fuel leaking and we have saved thousands on fuel.
Larry / Three Gen Inc.
The Leak Defender is the best product out there! After trying many solutions and nothing working, we found your website and gave it a shot. Your gas caps are the best. We haven’t had any more issues with fuel leaking and we have saved thousands on fuel.
Larry / Three Gen Inc.
Installation was super easy!! I was skeptical at first about whether it would work, but figured I would give it a shot with the money back guarantee. It worked instantly…No more leaking fuel and I get to keep my tanks polished and looking sharp without any leaking fuel residue! Awesome product…Took care of my problem. Don’t hesitate to buy it…Well worth the $250…Money well spent!!! Thanks for the awesome product!!!
Brent Lawson
I ordered the Leak Defender for both tanks and could not believe how easy they were to install, how well they work, and how nice they look!!!! I don’t get excited very often over a product, but these are the best. What a great company to deal with and a pleasure doing business with. Thanks guys, you saved me a lot of money and down time.
Tom Merten / T&A Transport LLC
We purchased 3 Leak Defenders at the Kentucky Truck Show and they have been on our trucks for 3 weeks. We are very impressed with them. No leaks!!! Great product. We will be purchasing these for our future trucks. Would recommend to anyone.
Jaquis Enterprises, Inc.
Just what we were needing to fix our problem! It was easy and fast to install and was the cheapest solution for our situation! I will use them in the future. Thank you!
Mark Merritt / Eagle Rock Timber
Easy install and works as described. The money saved is well worth the cost.
William Lewis / WS Lewis Transports
Fast shipping. Quality product and satisfaction of no more leaking fuel tanks. Couldn’t be any happier and will buy again for my other trucks.
Lance Nolte / Nolte Trucking & Equipment
I had seen a demonstration of the Leak Defender previously so when the fuel caps on my Kenworth started leaking and trying new gaskets failed, I knew what the fix was. These caps are great. The design, craftsmanship, and fit are top notch. No downtime, installs in minutes. No costly tank repair and these things seal 100% and look great. Thanks for a great product.
Ezehaul Transport
Awesome product!
Ray Dettman / Aqua Fresh
The leak defender stopped our leaking fuel cap problem. I only wish we found out about it sooner… It has already saved us over $4,000 in fuel tank replacement costs!
Woody / Pioneer Sand Company Inc.