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Pioneers in the Diesel component business

Service since 1943

Starting in 1943, Magneto and Diesel Injector Service Inc., founded near the banks of the Houston Ship Channel in the heart of Houston’s industrial area, has been the premier source for Diesel-related parts and service. Our early years were spent providing injector and magneto repair services to the shipping and rail industries that served Houston during the last days of WWII.

Growing & Expanding

As our business grew, we developed relationships with key manufacturers in the Diesel industry. Bosch, Honeywell-Garrett, Federal Mogul, Cummins, Stanadyne, Holset, BorgWarner, Parker Racor, Baldwin Filters, and many more are now part of our family of products for which we provide sales and service.


Moving Forward

Today, we are headquartered in Humble Texas, but are now known as M&D Distributors and have expanded to 8 locations in Texas with sales, service, and distribution responsibilities for Texas, Oklahoma and Louisiana.

The heart of our business remains Diesel fuel injection, but along with adding locations and territory, we have also added to our capabilities to serve our customer’s needs for turbochargers, engine parts, filtration, and more.