our warranty is 90 days or 4,000 miles however our parts have at least a one year warranty. Whatever warranty our parts supplier offers is what we offer on parts. Labor warranty is 90 days or 4,000 miles. That being said I determine extended labor warranty on per basis. We just warrantied an a.c. compressor under full warranty as it had failed 11 months after repair. Our customer paid good money to repair her car and I could not justify charging her again. I filed a labor claim against my parts supplier.