We have been serving San Antonio and South Texas for the last 46 years, providing precision engine machine work and engine parts. Through excellent customer service and attention to detail our goal at Duffin Engine Service is to exceed your expectations.

Duffin Engine Service is open Monday through Thursday 8:00 am to 5:00 pm. Friday 8:00 am to 3:00pm. Located at 1227 Hallmark,three blocks inside Loop 410, near Airport Blvd. [click for directions]. We offer engine machine shop services for Automotive, Over the road diesel trucks, Industrial, Marine, High Performance and small engines. Duffin Engine Service is committed to keeping current with the latest technologies, to accomplish this we are a member of the Automotive Engine Rebuilders Association(AERA).