I had a quote from my repair shop of $1000 to replace catalytic converter on my 1998 Astro. Purchase Magnaflow for $120. Shop installed for $125, reset computer and passed inspection in the Houston Texas area with some of the strictest emissions standards in the US. Can replace it 3 times and still be within the original quote. So in was definitely a bargain if it lasts more than a year it will have been a very good one.