Why Choose Duffin Diesel?

Downtime costs time and money. That’s why customers throughout South Texas rely on Duffin Diesel for precision engine machining, dependable quality, and responsive turnaround.

For over 50 years, our experienced machinists have combined proven craftsmanship with advanced equipment to machine and restore critical engine components for the oil & gas, agriculture, industrial, and over-the-road trucking industries. From cylinder heads and engine blocks to crankshafts and connecting rods, we are committed to delivering the precision, quality, and service our customers depend on.

Common Engines We Service

Cummins

ISX | X15 | ISC | ISL | N14

Detroit Diesel

Series 60 | DD13 | DD15 | DD16

Paccar

MX-11 | MX-13

Volvo

D11 | D13 | D16

Mack

MP7 | MP8

International

MaxxForce DT | MaxxForce 13 | A26

Precision Machining Services

✔ Cylinder Head Rebuilding

✔ Engine Block Machining

✔ Counterbore Repair

✔ Main Bore Alignment

✔ Crankshaft Grinding & Polishing

✔ Connecting Rod Reconditioning

✔ Precision Measurement & Inspection

Over-the-Road Applications

• Commercial Truck Fleets

• Owner-Operators

• Truck Repair Facilities

• Truck Dealerships

• Municipal Truck Fleets

• Heavy-Duty Vocational Trucks

• Construction Fleets

• Delivery & Distribution Fleets

Don’t See Your Engine Listed?

Our team regularly machines and restores a wide variety of heavy-duty diesel engine components used in commercial trucking applications. If your engine isn’t listed above, contact us to discuss your application. Chances are, we’ve worked on it before.

Ready to Get Back on the Road?

Whether you’re supporting a single truck or an entire fleet, Duffin Diesel has the experience, precision equipment, and craftsmanship to restore your engine components with confidence.

📞 Call Duffin Diesel today at 210 341-8183 to discuss your project or request a quote.