The Rock Auto website lists a Bosch O2 sensor P/N *******, which crosses to a Porsche P/N 986 606 126 01, as fitting (among others), a 2001 Boxster. This is incorrect, it is applicable only to pre-2000 Boxsters sold in the US. This was verified both by Bosch and several Porsche dealers. I bought one from Rock Auto last year, but then found I didn't need it then, so I put it on the shelf (in its original sealed, unopened shipping box) for future use. Now I need one, and find out it's wrong. My packing lists clearly has 2001 PORSCHE BOXSTER 3.2L H6 printed on it. Rock Auto will do nothing for me, citing their 30 day return policy. Since it is their (ongoing) mistake, and since the part in hand is clearly resellable, I feel an honorable business would own up to it and make the customer whole, but no - no refund, even partial, no credit toward new purchases ( which I am ready to make). When I told the manager that he should correct the website, and he said he would check into it, but regardless of what he found out, his refusal to help me would stand.