J & H Diesel Service, Inc. & J & H Turbo Service, Inc. is located in Greenville, MS, which is situated on the Mississippi River approximately 3 hours south of Memphis, TN. J & H Diesel Service, Inc. is a factory authorized diesel fuel injection and turbocharger sales and service dealer for Stanadyne, Delphi-Lucas-CAV, Bosch, Ambac International, Nippondenso - Denso, Zexel (Diesel KiKi), Yanmar, Racor, Sentinel, Borg Warner-Schwitzer, Warner-Ishi, and Garrett-Airesearch. We also provide after market service for Cummins, Detroit Diesel, Caterpillar, and EMD.Our Greenville location houses a very large diesel fuel injection rebuilding facility covering over 23,000 s.f. with 10,000 s.f. dedicated to diesel fuel injection rebuilding. We specialize in diesel fuel injection and turbocharger systems for agricultural, industrial, automotive, marine (including EMD), and heavy duty diesel engines.. Cummins,Detroit Diesel,Caterpillar,Garrett Turbos,Holset Turbos,Racor,IHI Turbos,John Deere,Schwitzer Turbos,Stanadyne,Yanmar,Zexel Diedel Kiki,EMD & many more!