Industrial Engine Machining & Rebuilding

Duffin Diesel provides precision engine machining and rebuilding services for industrial, power generation, municipal, manufacturing, and commercial equipment throughout South Texas.

When industrial equipment goes down, production stops. Our experienced machinists help customers restore critical engines to OEM specifications through precision machining, inspection, and rebuilding services.

Common Engines We Service

Caterpillar

C7
C9
C12
C15
C18
3406
3412

Cummins

John Deere

4045
6068
6090
6466
PowerTech Series

Other Industrial Applications

Generator Sets
Pump Engines
Compressor Engines
Municipal Equipment
Manufacturing Equipment
Irrigation Power Units
Stationary Power Units

Our Services

Cylinder Head Rebuilding

Pressure Testing
Resurfacing
Valve and Seat Repair
Guide Replacement

Engine Block Machining

Boring and Honing
Deck Resurfacing
Counterbore Repair
Main Bore Alignment

Crankshaft Services

Grinding
Polishing
Inspection

Connecting Rod Reconditioning

Resizing
Bushing Replacement
Inspection

Complete Engine Rebuilding

Our team rebuilds industrial engines to OEM specifications using precision machining equipment and proven rebuilding procedures.

Why Choose Duffin Diesel

Family Owned Since 1970
Located in San Antonio, Texas
Over 200 Years Combined Machining Experience
AERA Member
Fast Turnaround Times
Precision Equipment Including Rottler EM79 and Serdi 4.5
Capable of Servicing Engines Up To Caterpillar 3412 Size
Serving Industrial Customers Throughout South Texas

Industrial Applications We Support

Duffin Diesel provides machining and rebuilding services for engines used in:

Standby Power Generation
Prime Power Systems
Water Transfer Pumps
Municipal Equipment
Manufacturing Facilities
Construction Equipment
Industrial Compressors
Agricultural Power Units

Contact Duffin Diesel

Need a quote on an industrial engine?

Whether you operate generators, pumps, compressors, or stationary power equipment, Duffin Diesel has the experience and equipment to support your rebuilding and machining needs.

INDUSTRIAL