We Engineer & Produce
Fuel Systems & Critical Components
For CNG-Powered Medium and Heavy-Duty Vehicles
Recent News
NEW! 165 DGE Back-of-Cab CNG Fuel System
Mainstay Fuel Technologies, Inc. announces it has begun production of a new 165 DGE Back-of-Cab on-board CNG ... » Read Article.
Spire Natural Gas Fueling Solutions and Mainstay Fuel Technologies team up to offer more complete options for fleets considering CNG
Fleet operators looking to transition to compressed natural gas (CNG) got a big boost today. Together at the Advanced Clean Transportation (ACT) Expo, ... » Read Article.
500 Instagram Followers Uk Ig-Up.com
Instagram is incredibly valued instrument for web marketing. And instagram takes on a necessary part in creating and increasing your client base, also ... » Read Article.
Mainstay Delivers New CNG Fuel Systems to Car Hauler
Mainstay Fuel Technologies, Inc. and Virginia Transportation Corporation announce the completion and delivery of thirty custom designed fuel systems for use in Virginia Transportation’s ... » Read Article.
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About Mainstay
Mainstay is a fuel system and component manufacturer located in Piedmont, SC, halfway between Charlotte and Atlanta. With a dedicated commitment to quality, integrity and adherence to best practices, we guarantee our work and your satisfaction.