Proudly Serving Texas since 1985

Robert Sullivan, founder of Texas Diesel Injection, founded the business in 1985. It is now owned by his son, Travis Sullivan, and manages the day-to-day operations of the business. We’ve been in the same location since our inception. We are here to stay!

We strive to be the best dealer alternative in the South Texas Region. We utilize factory scan tools while repairing trucks with factory and upgraded parts.

Whether your truck is new or old, we can work on it! We’ll treat your vehicle like it’s our own. Our personalized service is fast and reliable. We carry OEM and aftermarket parts, in stock and we warranty our work for 12 months or 12,000 miles.