Specializing in All Transmissions, Drivelines, Clutches & Rear Ends

Serving California’s East and Central Contra Costa Counties

Free Estimates

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Complete Transmission Diagnosis, Repair, and Replacement


With over 30 years in business, it’s no question why A-1 Transmission Service of Antioch in Antioch, CA, is one of the leading companies for transmission services in San Diego and Orange counties. We are a family-owned and operated business, ASE certified, and a member of the Automatic Transmission Rebuilders Association (ATRA). We have a reputation for our exceptional work in installing and repairing automatic and manual transmissions. We offer free estimates for our work.

Blue Car - Antioch, CA - A-1 Transmission Service of Antioch

We Will Get You Back on the Road Quickly and Safely

We understand the importance of your time, and whether it's your vehicle or a company vehicle, we will work our hardest to get you back on the road faster. That's why our team of highly trained technicians always strives for excellence in achieving the most up-to-date and outstanding transmission installations and repairs. We are ready to diagnose and repair your transmission and get it done right the first time so you can stay on the road longer.

Why Choose A-1 Transmission Service of Antioch?

  • Specialize in transmissions
  • Conveniently located off Highway 4
  • Family-owned and operated
  • ASE certified
  • Certified member of the Automatic Transmission Rebuilders Association (ATRA)
  • Committed to excellence
  • Customer service and satisfaction is our priority
  • Free estimates

Auto Transmission Services We Offer

  • Automatic Transmission Services
  • Manual Transmission Services
  • Diagnostic Services
  • Transmission Maintenance
  • Transmission Repair & Service
  • Transmission Replacement
  • 21 Point Trans Check
  • Clutch Service
  • Front & Rear Differentials
  • Transfer Cases
  • Drivelines
  • Road Tests
  • Auto, Truck, RVs, Front & 4-Wheel Drives
  • Race Cars, Classic Cars & Muscle Cars 
  • Foreign & Domestic

See What Our Customers Are Saying About Us

⭐⭐⭐⭐⭐

Excellent service!

- Janet N.

⭐⭐⭐⭐⭐

Great service…Great people.

- Humberto G.

⭐⭐⭐⭐⭐

They did an excellent job on my car and not charge me alot to fix it. They appear to be honest and forthright.

- Denise R.

⭐⭐⭐⭐⭐

Very pleased with service performed on my vehicle and Alex's customer service. SUV runs a lot smoother. No clunks, problem was fixed in timely manner and reasonably priced, 1/2 the cost of dealership services! Will be a returning customer if issues arise with my vehicle. I highly recommend A 1 Transmission in Antioch. Satisfied customer.

- Jacki G.

⭐⭐⭐⭐⭐

Everybody go to Alex! Not only did he have the lowest price for a transmission rebuild for my Ford Ranger out of the 6 shops I called, but he went above and beyond inspecting the truck and taking care of it like it was his own. Very pleased and will be doing more business with A-1 Transmission Antioch as well as referring friends and family to this shop.

- Arenner

Google Review

To schedule service and get a free estimate, call us today at 925-754-9967.

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