very very bad item
check engine light was on-Code: said cat/O2 needs replacement;i got this product and got it installed by a mechanic-then reset check engine lights- check engine lights gone- perfect right? wrong!now check engine lights are back on with same code-it worked good for 4 months!PRODUCT IS A SHAM - low/bad quality in my opinion;my original O2 sensors have been on the ACURA car for 220k miles- replaced with this sensor that worked for 4 months and now im back to square one; car is at 224k miles;waste of money! get an original one- this product is a waste of money;i do not recommend this product at all;