Defining Differential Carrier BreaksDifferential carriers are designed to accommodate a wide number of  gear ratios for the various tire sizes and vehicle applications associated to them. As the … read more

Casting numbers do not always correlate directly to one part number. One casting (number) can be the base for many different products. Casting numbers can also change depending on many factors. I … read more

Yes, those etched numbers on the top of the pinion acutually have meaning and are quite important to getting a good pattern.  If you don't have these numbers on your pinion gear, do not fear, you … read more

We get lots of questions about setting pinon depth so I wanted to come on and give some basics on what it is, how to measure it and where to start.Definition: Position of pinion-gear relative to the r … read more

While you are cleaning you components you should have your replacement clutches soaking in friction modifier part number 43161 from Spicer is preferred. This additive is specially formulated to preven … read more