We are proud to be one of Northern California's best transmission and transaxle repair shop's. Our commitment to quality service has earned us consistent high marks in customer satisfaction. 

 Porter's Precision Mobile is dedicated to keeping you moving on the road. Our experienced department will keep your vehicle running in top condition. 

We use the latest automotive diagnostic technology to provide you with high quality service and a quick turnaround. 

We carry a large inventory of transmission parts. This gets you on the road quickly and safely. 

You won't find a better level of service anywhere in Northern California!

Our expertise includes

  • Transmission Rebuild
  • Transaxle Repair
  • Regearing
  • High-Performance
  • Special Gear Ratios
  • Cryogenics
  • Mig Welding
  • Tig Welding
  • German Transmissions
  • American Transmissions
  • Transmission inspection
  • Gear Carrier Machining