My old differential cover was rusted through and had started leaking oil. This was an exact replacement. Includes an attached magnet (which the old one didn't have) so I'd believe that this is better than the original.
the picture shows plug on cover to fill rear end with oil it came with no such plug thereis no hole for plug now have to pull wheel to fill i liketo seed it back if you have the cover with the plug in it it a prodject car so time is not a factor look at picture at top of this page