Gomer’s Guaranteed Warranty with SMP ProductsAll SMP Products purchased through US Diesel Parts come with a Guaranteed No Hassle Warranty. This means if you purchased a SMP product through our company and for some reason it fails due to working in its natural environment (with in the warranty period) we will send you out a warranty replacement product the same day it arrives back at our facility. We can also send you out a replacement unit for the same cost as what you paid for the original part and when you return that product we will credit you back within 1-2 business days. You do not have to wait for any inspection from the warranty department before credit is issued. We cannot cover any product that comes back damaged due to improper installation, wrong application, or with physical damage to the unit.