Rear Brake Caliper Flexible Line May Leak – Osage Warrior & Super Warrior – 2019 Dodge Ram 5500 & 4500 Chassis

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July 21, 2021 NHTSA CAMPAIGN NUMBER: 21V549000

Rear Brake Caliper Flexible Line May Leak

A brake fluid leak can cause a loss of brakes and increase the risk of a crash.


NHTSA Campaign Number: 21V549

Manufacturer Osage Industries, Inc.


Potential Number of Units Affected 10



Osage Industries, Inc. (Osage) is recalling certain 2019 Dodge Ram 5500 chassis, Dodge Ram 4500 chassis, Dodge Ram 5500 Super Warrior, Dodge Ram 4500 Warrior, and Dodge Ram 5500 Warrior vehicles. The rear brake caliper flexible line may have been improperly routed, which could allow it to chafe against suspension components, and result in a brake fluid leak.



Dealers will modify the rear brake caliper flexible line mounting, and replace the rear brake caliper flexible line as needed, free of charge. Owner notification letters were mailed on July 21, 2021. Owners may contact Osage customer service at 1-800-822-3634.



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


Important Safety Recall

NHTSA Recall Number: 20E031

Date: May 13, 2020

Subject: RAM Rear Brake Caliper Flexible Line Modification Safety Recall Notice

Dear LiquidSpring Suspension Owner,

This notice is being sent to you in accordance with the requirements of the National Highway Traffic and Motor Vehicle Safety Act.

LiquidSpring LLC has determined that a defect which relates to motor vehicle safety exists in a component of certain LS suspension systems installed on 2019-20 model year RAM 4500/5500 cab chassis, and only suspension systems installed on the above chassis are included in the safety recall.

These suspension systems are typically installed on ambulances and other specialty vehicles. The affected system component is the rear brake caliper flexible line. The routing of the rear brake caliper flexible lines during the installation of the suspension kit may be causing brake caliper flexible line wear due to contact with a suspension component(s). Continued vehicle use with the rear brake caliper flexible line contacting suspension a component(s) may result in partial or complete loss of rear service brakes which could cause damage to the chassis and/or other vehicles, and possibly result in a crash.

You are receiving this notice because records indicate that you may have purchased a vehicle equipped with an affected LS suspension system. LiquidSpring recommends that vehicle operator(s) be aware of any abnormal brake pedal feedback or reduced braking ability and that the rear brake caliper flexible lines should be inspected for any leakage. If any wear is found on the rear brake caliper flexible lines (not the protective spiral wrap), do not drive the vehicle.

The affected suspension systems have a serial number range 2007563 — 2013191. The suspension system serial number may be found on the serial number plate located on the driver side front frame hanger of the suspension. See Figures 2 & 3 for the location and view of the serial number plate.


If you have a 2019-20 model year RAM 4500/5500 cab chassis equipped with a LiquidSpring suspension system within the above serial number range, please contact LiquidSpring to arrange service to have the rear brake caliper flexible lines inspected and modified to address the potential wear issue, free of charge. This repair will take about 1 hour to complete.

The LiquidSpring contact information is as follows:

Phone: 765-474-7816 Ext. 1 for Customer Service – 8:00 a.m. – 5:00 p.m. EDT Email:

If LiquidSpring fails or is unable to arrange service as described above without charge, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590 or call toll-free Auto Safety Hotline at 1-888327-4236 (TTY 1-800-424-9153); or go to

Commitment to safety, quality and respect for the customer are our highest priorities. Please accept our sincere apology for any inconveniences that may result from modifying the rear brake caliper flexible lines.




Dean F. Bartolone — President/CEO



4 Affected Products




4 Associated Documents

Defect Notice 573 Report

RCLRPT-21V549-5747.PDF 222.922KB



Recall Acknowledgement

RCAK-21V549-5046.pdf 646.521KB



Owner Notification Letter(Part 577)

RCONL-21V549-5670.pdf 578.911KB



Recall 573 Report- Amendment 3

RCLRPT-21V549-6654.PDF 223.062KB



Latest Recalls Documents

For the Latest and Most Recent Recalls Information Visit the link below…



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