I talked to a guy on eBay and he has several refurbished ones for sale and he said there isn't a difference in them. There the same but the Autoparts house shows two different part number and they say there is but I don't know what it is yet! I will find out before buy'n because one is $75 cheaper! lol.. I don't wanna go the junk yard route because of the fact it might be bad like mine is and I only have 75,000 miles on it! So I know them out there have more miles and prolly is bad already. I don't wanna order it from the guy on eBay because of the warranty fact.. I knmow he saids there is a warranty with his product but that means I would have to take it off and ship it back to him and wait for a new one to come back! Rather do that at a local parts house!