Corrosion May Cause Fuel Line Leak – 2016-2023 Coach and Equipment Phoenix Transit Buses

November 18, 2022 NHTSA CAMPAIGN NUMBER: 22V851000

Corrosion May Cause Fuel Line Leak

A corroded fuel line can leak fuel, increasing the risk of a fire.


NHTSA Campaign Number: 22V851

Manufacturer Coach and Equipment Mfg. Corp.


Potential Number of Units Affected 353



Coach and Equipment Mfg, Corp. (Coach and Equipment) is recalling certain 2016-2023 Phoenix transit buses equipped with Roush fuel return lines included in GEN 4 and GEN 5 LPG Conversion Systems that were installed on vehicles sold or registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, Washington D.C., West Virginia, and Wisconsin. The zinc-plating on the fuel return line may break away when contacted by road debris, causing two dissimilar metals on the fuel line to contact each other and corrode.



Dealers will replace the fuel return lines, free of charge. Owner notification letters were mailed December 19, 2022. Owners may contact Coach and Equipment customer service at 1-800-724-8464.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to



This recall applies to approximately 353 Coach and Equipment Mfg. Corp. Phoenix buses installed with a Roush CleanTech Gen 4 or Gen 5 LPG fuel system manufactured between January 1, 2016, and March 31, 2023 and operated in the Salt Belt states.



Roush CleanTech has determined that the zinc plated carbon steel fitting on the fuel return line in its Gen 4 and Gen 5 LPG fuel systems may corrode over time due to exposure to salt spray, particularly where impacts from road debris have damaged the protective coating that had been applied to the fitting. Such corrosion could lead to failure of the fuel return line fitting, which would result in a leak of liquid propane fuel, which would create a risk of fire.
Roush CleanTech, LLC has not issued instructions to stop driving your vehicle under this safety recall. However, in the event that you detect a LPG fuel leak, please stop driving your vehicle, park it outdoors in a well-ventilated area, and contact Roush CleanTech, LLC immediately at 1-800-597-6874 to make arrangements for an interim remedy.



The newly designed fuel return line (the remedy part) is not expected to be available until the end of the first quarter of 2023. Once these parts are available, the end users are to contact Roush CleanTech at 1-800-59-ROUSH or Support @ to arrange for parts and schedule repairs at an authorized repair center.



Coach and Equipment incorporation with Roush CleanTech, LLC will provide the materials and the cost of labor for replacing defective parts. This remediation is to be conducted by Roush CleanTech, LLC authorized service centers.


Chronology :

We initially received a letter from Roush CleanTech on 8/1/2022 and an email on 10/27/2022 from the NHTSA. These communications explained the safety defect. Currently we have not had any warranty claims, field or service reports due to this issue. We were made aware of this safety defect through Roush CleanTech’s Part 573 Safety Recall Report 22E-049.and a letter they sent to us.


8 Affected Products




6 Associated Documents

Defect Notice 573 Report

RCLRPT-22V851-4162.PDF 214.015KB



Recall Acknowledgement

RCAK-22V851-2965.pdf 646.71KB



Recall 573 Report- 11/23/2022

RCLRPT-22V851-4786.PDF 214.211KB



Interim Owner Notification Letter(Part 577)

RIONL-22V851-0855.pdf 217.734KB



Notification of Roush Recall 22E049

RCONL-22V851-1769.pdf 94.385KB



Recall 573 Report – 09/01/2023

RCLRPT-22V851-7650.PDF 214.221KB



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