Increased Fuel Economy
Save Your Injection System & Thousands of Dollars
Increase Horsepower & Torque
Which FASS Product Will Work
Best For You?
Which FASS product will work best for you?
Select the appropriate tab below, then answer a few simple questions. We'll show you the product that best meets your needs, and in some cases an alternate that would also work. We'll even let you know if you need any additional parts to help complete your installation!
This system is designed for the 2017-2019 L5P Duramax WITH AFTERMARKET TUNING!! If the truck is not equipped with an aftermaket tune and the ability to delete specific codes, the vehicle will have a MIL after the FASS installation. Consult with your calibration supplier prior to the FASS installation to confirm they are able to delete specific diagnostic codes.
For questions or additional information please call tech support at 1-866-769-3747
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This Product has NO WARRANTY unless:
- It has been purchased from an Authorized or VIP Fass Dealer – if in doubt check here. If your purchase was made on Jet.com the warranty is void. Return the FASS product to the seller and get a refund.
- It is registered within thirty (30) days of purchase. Other conditions may apply, please see full warranty information.
NOTE: Warranty is void if the product was purchased below FASS website advertised pricing.
Installing a FASS Fuel System DOES NOT Void Manufacturer’s Warranty!
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