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
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C7
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C9
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C12
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C15
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C18
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3406
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3412
Cummins
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QSB
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QSL
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QSX
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K19
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K38
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K50
John Deere
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4045
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6068
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6090
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6466
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PowerTech Series
Other Industrial Applications
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Generator Sets
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Pump Engines
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Compressor Engines
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Municipal Equipment
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Manufacturing Equipment
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Irrigation Power Units
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Stationary Power Units
Our Services
Cylinder Head Rebuilding
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Pressure Testing
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Resurfacing
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Valve and Seat Repair
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Guide Replacement
Engine Block Machining
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Boring and Honing
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Deck Resurfacing
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Counterbore Repair
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Main Bore Alignment
Crankshaft Services
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Grinding
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Polishing
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Inspection
Connecting Rod Reconditioning
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Resizing
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Bushing Replacement
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Inspection
Complete Engine Rebuilding
Our team rebuilds industrial engines to OEM specifications using precision machining equipment and proven rebuilding procedures.
Why Choose Duffin Diesel
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Family Owned Since 1970
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Located in San Antonio, Texas
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Over 200 Years Combined Machining Experience
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AERA Member
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Fast Turnaround Times
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Precision Equipment Including Rottler EM79 and Serdi 4.5
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Capable of Servicing Engines Up To Caterpillar 3412 Size
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Serving Industrial Customers Throughout South Texas
Industrial Applications We Support
Duffin Diesel provides machining and rebuilding services for engines used in:
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Standby Power Generation
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Prime Power Systems
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Water Transfer Pumps
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Municipal Equipment
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Manufacturing Facilities
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Construction Equipment
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Industrial Compressors
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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.