About Us

It was in 1954 that a shop foreman names Ruben Bentz was left jobless after the company he had worked for was bought out. Turning adversity into opportunity, he decided to establish his own business in tractor parts and service. This business was born in the west side of Stockton, California in a livery stable.

In time Ruben suffered a stroke. It was at this point his son took over the business and made the decision to move the company to another location in west Stockton. This is where the business has remained to this day.

Associated Tractor Service Inc. Has grown over the years as a family owned business. The challenge of serving the agriclturally rich San Joaquin Valley has always been a the center of every service we farmers as well as agricultural and equipment dealers all over the state of California and across the country.

With the changing times, Associated Tractor Service has remained consistent in our dedication to offer

our customers competitive prices and quality service is a favorite shopping yard for out customers

Meet the Team

Our dedicated staff that is always happy to see you and help you get the part you need so you can get up and running quickly.


Tom Bentz


Owner of Associated Tractor Service Inc.

Tom has been around tractors scense he was a young man. if you need a part Tom knows how to find the part, tell you where to find the part or serial number, and in most cases tell you why you are having the problem that you have with your tractor/crawler.


Larry Gonser

Master Mechanic

Service Department Head Mechanic

Larry has 25 + years of experience as a Mechanic, Welder, Fabricator, and Troubleshooter. Which makes him one of the best Service people around.


Bulmaro (Boomer) Maldonado