This gasket finally fixed a leaking Dana 44 front gasket on my 2006 TJ that several attempts at Permatex Ultra Black couldn't fix. Compared to RTV, this product is exponentially simpler. Put it on, align the differential cover, tighten according to the screw sequence on the packaging, done! No mess, no cleanup, just finished job with no leaks. I will buy another one for my rear diff next time I need to crack it. Update: 2 months later and still not a drop comes out of my Dana 44!