Founded by the Ostrander family in 1968 to provide turbocharger rebuilding, the company grew to encompass services including diesel engine repair, after treatment cleaning and retrofitting.

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Today, DEE is well regarded throughout California and the northwest for its superior diesel exhaust and emissions equipment care. We work on public and utility fleets – from trucks to metro and school buses – as well as independently-owned vehicles. DEE technicians have been with the company for decades delivering the depth and breadth of experience you want for your equipment. We have the service diagnostic expertise and OEM parts you need.

When it comes to engine care, entrust your equipment to the company with half a century of experience

– DEE