Yukon Gear C1 D30 STD Replacement Differential Review

WARNING: The filler plug could slip through the cap and fall into the differential case (yes I did). You just have to screw it in until it goes in and offers some resistance, but it can never really be screwed in. This makes it a very poorly designed product indeed, but knowing this caveat I assume it will work fine. The picture shows a square countersunk filler plug that actually comes with a countersunk 14mm hex head. Aside from the poor design of the filler plug, it fitted my Dana 30 well in