Williams Controls, Inc.

News Release Contact: Mike Rusk

Financial Controller

For Immediate Release Telephone: (503) 684-8600 WILLIAMS CONTROLS TO HOST SECOND QUARTER 2012 RESULTS CONFERENCE CALL TUESDAY, MAY 1, 2012

PORTLAND, OR--(Marketwire - April 17, 2012) - Williams Controls, Inc. (NYSE Amex: WMCO) today announced that it will host its second quarter 2012 results conference call on Tuesday, May 1, 2012, at 1:15 p.m. PDT (4:15 p.m. EDT). Williams plans to issue a press release detailing its results the morning of Tuesday, May 1, 2012.
The domestic dial-in number is 888-665-2348 and the international dial-in number is
973-200-3386. To join the conference call, please use the following conference ID number -
72985367. The conference call will also be available live via web cast at the following link: http://us.meeting-stream.com/williamscontrols_050112. Please allow a few minutes for registration. NOTE: In order to participate in the Q & A, you must dial in to the conference call with the provided information. You will not be able to communicate on the audio only live web cast. A link to this event will also be available on our website www.wmco.com.
For those unable to join the conference call, a recording of the call will be available through May 11, 2012. Domestic participants should call 855-859-2056 and international participants should call 404-537-3406. The pass code 72985367 will be required to access this recording.

ABOUT WILLIAMS CONTROLS

Williams Controls is the world leader in Electronic Throttle Controls for commercial vehicles. Its customers include many of the global leaders in the truck, bus, and off-road markets. Williams Controls is headquartered in Portland and employs more than 250 people worldwide. It supports its customers in

North America, Europe, and Asia with production facilities in Portland, Oregon, USA, Suzhou, China, and now in Pune, India.

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