Customer Service

Willis Power Systems is dedicated to providing a positive experience for our customers.  Please call our toll free number 1-800-825-4631 to speak with a WPS representative to order parts or to make an appointment.

You can also email us at parts@willisapu.com or service@willisapu.com.

If you would like your truck serviced at Willis Power Systems, please call our office at 417-831-2520.

To find a service location nearest to you, visit our Service Locator page. 

For general requests or feedback, please submit the form below.