Building custom trailers since 1979
(209) 667-4555 |


Glenn Engineering design and manufacture custom trailers and equipment for the agricultural industry. We are a family owned company that places great value on quality workmanship, with a dedicated, tightly-integrated crew (most have been with us for years), serving farmers and Ag companies here in the valley and throughout the US. With over 35 years of experience, we have perfected our design, welding, and build techniques which we apply directly to building custom trailers tailor-made to the needs of our customers.

01. Our Vision

Design and develop new innovative techniques to manufacture state-of-the-art custom trailers and equipment to service the agricultural industry.

02. Our Mission

We are focused on listening to our customers and incorporating their input into our designs to help us manufacture sleek and functional trailers directly relevant to our Ag business clientele.