So I had a set of 4.10 gears installed in the rear end of my Dajiban. The speedo was, as one would expect, wildly inaccurate after that. I consulted the intergoogles and discovered I needed to swap my 34 tooth pinion for a 39 tooth pinion. So I ordered it. Of course it arrived on a rainy, cold, miserable day, but I couldn't wait. I crawled under the van with a 13mm wrench, cursed the guy who told me I needed a 13mm wrench, found the correct bolt, un-cursed him, removed the old pinion, popped the new pinion in, and bolted it all back together. All in, fifteen minutes work to install. I took a hoon up onto the freeway and the odometer clicked exactly the same tenth at every mile marker for about five miles. The accuracy is astounding! So, if you need a speedometer pinion for a Dodge, this one is a good choice... well, I mean, you need to figure out YOUR tooth count needs, but once you do, this is a good choice. Sort of thing.
Rating: [5 of 5 Stars!]