Purchased a Catalytic converter with a 5 year warranty from carpartswholesale. It failed in 8 months. I dug up the paperwork and called them. They e mailed me a form to have my garage fill out that pretty much wanted my mechanic to diagnose the entire car from bumper to bumper including at minimum, 6 pictures of all different angles of the converter. I tried to explain to the customer service people that the insides of the converter have come loose and it is rattling horribly yet they still wanted all the diagnostic info. My mechanic laughed and said he would suggest I buy next time at a local parts store. Carpartswholesale also said the warranty process usually takes about 3 weeks. Like I can lay the car up 3 weeks. Wasted my time and lots of money. NEVER BUY FROM THIS COMPANY.