Bosch has a lifetime warranty and money back guarantee.

I know; I used it... laugh

My plugs died in about 6k miles. 3 badly (back bank) 1 mildly & 2 looked okay.
I'm sure my chip didn't matters help any :rolleyes:

I traded for the AWSF22FS and made $10.

Another downfall of the Bosch is they never seem to be the correct heat range. Except for a few vehicles.

2000 SVT #674 - Check it out!

Whoever coined the phrase; "If it ain't broke; don't fix it" ~ Just doesn't get it...