Truck Gears Inc.

About Us

TGI Founders and Owners, Dan and Pauline Twomey.

TGI General Manager, Greg Saling.

Providing Professional Caliber
Heavy-duty Gear Work since 1979.

In 1979 Dan and Pauline Twomey founded Truck Gears Incorporated with one goal in mind, to provide an unprecedented level of quality craftsmanship, service and personal attention to America’s heavy-duty truck owners/operators.


Today, with over 30 years of uninterrupted service and thousands of satisfied customers, TGI is proud to say that they have reached that goal.


With a management team sharing over 120 years of combined industry experience, coupled with a staff of skilled mechanics, TGI has established themselves as a clear industry leader in drive train rebuilding and repair.


In their modern, full service, 20,000 square foot repair facility, TGI has also expanded to develop and service the national OEM network of dealers. They are regularly relied upon to provide a product that is equal or superior to the remanufactured product supplied by the original equipment manufacturer.


Not only does TGI repair, rebuild and stock hundreds of new and remanufactured transmissions and differentials, they also have a complete inventory of genuine and industry proven after market parts.


With all of the growth and innovation, this family owned and operated shop remains true to their core principles and values. At TGI all transactions are performed with only the highest level of honesty and integrity. As a client you can always expect to receive the highest level of personalized, customized attention and a genuine attempt by any member of the staff to do “whatever it takes” to service your needs to your satisfaction.


TGI’s longstanding reputation for being one of the best in the business is due to their attention to detail, use of quality product and strong resolve to “get the job done right the first time.” From the flywheel to rear axle, and everything in between, you can count on TGI for value and service you can rely on.


TGI is conveniently located in Los Alamitos CA. near the 605 and 405 freeways, TGI’s operating hours are Monday – Friday, 7am to 5pm and Saturdays 8am to 12pm. Call today to see how they can serve you.