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Good Service is Good Business


You depend on your Diesel for your livelihood. We know you have to trust that it will perform when you need it. Every M&D branch is a fully authorized services facility for the major barands of diesel fuel injection.

Utilizing the latest test and calibration equipment from Bosch and Hartridge, combined with our decades of experience, you can rely on us to correctly diagnose, repair, and rebuild nearly every diesel fuel injection pump.


We utilize the latest equipment and procedures to provide our customers with a product that is built right, built with pride, and built to last.

In Houston, at our N. Shepherd lacation, we also offer Drive-In-Service for diesel powered pickup and medium duty trucks.



We have a highly experienced team of inside sales personnel to help you get the right part the first time you call.

Since 1943 we’ve been taking care of customers the old fashioned way - one-at-a-time.

M&D Injectors

High Pressure Common Rail Injectors
Fuel Injection Pumps
Fuel Injectors

M&d injectors