How do you tell which side of the rotoflex faces front

 

Depends on where you bought it from. The one I got from Lucky 8 had the arrows facing the wrong way. It’s best to take a picture of the orientation of the existing one and match it up.

 

I think their are arrows molded in to the outer circumference of the part which should be pointing forward.

 

The arrows are the orientation of the bolts.

 

+1

Providing you bought a proper GKN Roto and not a cheap-O then the arrow will be there.

 

Ok so far so good I have arrows, so as long the the arrows match the bolt orientation there in no front /back to the actual rotoflex

 

There is no front or back. You want to make sure the thicker part of the rubber is “pulling” the axle side of the shaft when driving forward if that makes any sense. Hence the orientation arrows for the direction of the bolts. See the picture above as a reference. In my case I thought I was getting the OEM coupling but was shipped aftermarket and the arrows where in the exact opposite direction. The price was too good to be true but it seemed like a solid replacement so I kept it.