Customer Support

Welcome to Mainstay Service and SUPPORT

24-Hour Mainstay Support Number
Toll Free: 1-844-332-3775

Mainstay’s Authorized CNG Service Network
Current and Growing….

Mainstay has established commercial relationships with several companies who have qualified CNG Service Centers and trained technicians in key geographic areas of the country. These locations are authorized to work on Mainstay’s products and provide warranty and after-market services.



Mainstay is here to answer, any and all, related concerns