I've tried everything imaginable to stop my fuel tanks from leaking, but this is the only product that actually fully stopped the leak. Well worth the money spent

works great

Definitely purchase if you drive a Kenworth! We all know how Kenworth caps leak and how hard they are to get off also this product it absolutely amazing not only does it stop leaking caps but also easy to loosen the cap back off without filling like you need a hammer like oem caps.

Fast shipping great customer service

Fast shipping and great service

Fast shippping and a great product and look good on my truck

The part fit and doesn't leak, just needed it here sooner but being close to Christmas freight probably took a little longer then usual Thanks

Product fit perfectly! Highly recommend purchasing from company.

I purchased the stop leak fuel caps for my 2016 Kenworth T 800. The cap on the passenger side works great. The cap on the driver's side still leaks a little bit. I have tried tightening it more than once. They have only been on for about a week, so we will see how they last.

Great and smooth experience highly recommend

These are the 3rd set of leak defenders I've purchased. My first set was just the caps and collar for my '06 Kenworth. My second was the 3 piece set for my '16 Freightliner Glider. My most recent is the Leak Defenders with integrated anti-siphon for my '14 Kenworth glider, and it's like they read my mind about integrating the collar and the anti-siphon into one solid assembly. I love these fuel caps and they look fantastic to boot. No more leaks and with fuel coming in around $6/gallon, no more fuel theft. I love the thick thread and coarse pitch, no more cross threading leaky Kenworth caps. Spendy YES, Worth it, 100%!! And no, I'm not a shill, just an O/O who appreciates a great product.

Best investment

Exactly as advertised

Great

Arrived as advertised

😁