Is that reman part really defective?

If you’re replacing rotating electrical components a little too often, it could be worth a look at statistics to determine a trend or trends. Does one make or model of vehicle that predominantly fail? Is there an identifiable group of customers who experience more than the usual number of comebacks? Is there one tech who has more difficulty with auto electrical systems than others? Does one manufacturer or supplier ship more than their share of bad parts? Below is a study from an industry company that’s involved in remanufactured rotating electrical parts, showing returns for Delco 9si alternators. If your shop experiences 10 percent or worse warranty returns on reman rotating electrical parts, consider a lttle detective work to find the cause.