Why Choose Duffin Diesel?

Downtime is expensive. That's why oil & gas companies 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 restore critical engine components that keep drilling, compression, pumping, and power generation equipment operating in the toughest environments.

Common Engines We Service

Caterpillar

3406E | C15 | C18 | 3412

Cummins

K19 | K38 | K50

Natural Gas

Waukesha | Doosan

Precision Machining Services

✔ Cylinder Head Rebuilding

✔ Engine Block Machining

✔ Counterbore Repair

✔ Main Bore Alignment

✔ Crankshaft Grinding & Polishing

✔ Connecting Rod Reconditioning

✔ Precision Measurement & Inspection

Engine Applications

• Drilling Equipment

• Natural Gas Compression

• Pumping Units

• Power Generation

• Industrial Power Systems

• Oilfield Support Equipment

Don't See Your Engine Listed?

Our team regularly machines and rebuilds additional heavy-duty diesel and natural gas engine platforms. Contact us to discuss your specific application and engine requirements.