Centrally located in one of the largest petroleum and mineral deposits in the United States, J & R is literally in the back yard of the Oil and Gas Drilling Industry. Situated at the crossroad of America with three major highways – I-40, I-35 and I-44 –running through it, we are logistically in a superior spot to service your needs, whether it is international, or domestically we have capabilities and knowledge to meet your requirements.

For over 30 years, we have been providing quality remanufactured engines, power generation equipment, and compressors to meet the needs of our customers. When it comes to having the product support and expertise to satisfy our customer’s needs you need look no further than the experts at J&R.

Our long history of service to the Oil and Gas Industry positions ourselves as an expert in knowing how to diagnosis your equipment and offer, through are extensive inventory, the proper remanufactured engine. Rely on our experience to get the job done right the first time.

Power Generation

Ever since J & R started in the engine business we have also been in the generator set business.

J & R rebuilds and sells both diesel and natural gas power, mobile and stationary, prime and standby power, open and enclosed generator sets and the parts to support them.

We have a fully integrated rental fleet on the premises that can work with you for temporary power and quickly get up and running.

Natural Gas Engines


J & R has been rebuilding Natural Gas Engines as long as we have been in business. When it comes to the product knowledge of what type of gas engine is best suited for your application you don’t have to look any further than us.

We stock a complete line of gas engines, and through our engine exchange program you can trade out your old gas engine for a rebuilt one. When time is critical we understand that the quicker you get your engine back up and working the better.

Natural Gas Compressors


J & R can help you with service and maintenance of your natural gas compressor. When it comes to natural gas compressor expertise, we have you covered.

  • Gas and electric drive compressor rebuild and packaging
  • GE (General Electric) & Ariel compressor rebuild
  • All compressors full load tested on nitrogen loop
  • Make ready services
  • Caterpillar overhauls oem and aftermarket
  • Waukesha VHP 7044 
  • All engines load tested 8 hours
  • 24 hour parts warehouse and field service techs

CAT Specialists


Caterpillar Engines and Generators are our business!

If you are in the market for a remanufactured engine, generator set of spare parts, J & R has a large inventory to meet your needs.

For over 30 years, we have been a reliable source for service and replacement engines specializing in CAT equipment. If you are in the need of remanufacturing engines and generators you have come to the right place.