I just installed coast drive shafts on my 2011 2-door. Does anyone know what the blue painted portion on the splines mean?

 

If I were to guess, its thermal paint to identify overheating? I'm simply guessing though..?

 

I was thinking it may indicate how far the shaft can be extended.

 

Don't worry about it. Mine have the same too, and I've had them (front/rear) for over a year with wheeling time. They are still blue. I think it's extra protection for the splines, and helps with the lube.

 

Good deal. I am fixing to put it back on the road. Thanks

 

Not to hijack the thread but was there a dust cover on the stock yoke that came off with it? It came off both the transfer case yoke and the pinion yoke.. I installed the shaft without putting them back on? Is that what you did? Any help appreciated? I couldn't find any info on it

 

I was going to transfer them to the new yokes but the new yokes had a slightly smaller outside diameter and the covers would have been loose. Ideally it would have been noce to have them on there especially if your are wheeling in fine sand.

 

I put on the front one and drove around and it sounded like a cricket mating haha so I took it off this morning.. I havent had any type of gear oil leaking so I figured it was just a dust cover of some sort and coast was closed for Christmas :/

 

Isnt that the part that rips off the stock drive shaft?

 

Don't have the blue on my Coast front shaft on the 4door. Maybe it's not as extended as what the 2 door with lift has. I'll check when wheelin and report back it I have the "blue" too.