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Vehicle recall 16V524000 · July 11, 2016

Polar Tank DOT 406 Tank Trailer, DOT 407 Tank Trailer and 3 more models

These trailers are equipped with certain Bendix SR5 spring brake valves which may have been improperly machined which could cause a delay of application of the spring brakes…

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
Polar Tank Trailer, LLC (Polar Tank) is recalling certain model year 2014-2016 DOT 406, DOT 407, DOT 412, MC 331 and Non-Code trailers manufactured January 1, 2014, to April 28, 2016. These trailers are equipped with certain Bendix SR5 spring brake valves which may have been improperly machined which could cause a delay of application of the spring brakes while parking.
Consequence
If there is a delay of the spring brake application, the trailer may roll away after it has decoupled from the tractor, increasing the risk of a crash or injury.
Remedy
Polar Tank Trailer will contact owners and provide a remedy kit, complete with instructions, to repair any affected SR-5 trailer relay valves, free of charge. The recall began on October 3, 2016. Owners may contact Polar Tank customer service at 1-320-746-2255.
Notes
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 www.safercar.gov.

Recall details

NHTSA campaign
16V524000
Reported to NHTSA
July 11, 2016
Filed by
Polar Tank Trailer, LLC.
Owner notification
October 3, 2016
Vehicles potentially affected
109
Initiated by
the manufacturer
Components
Parking brake
Recall 16V524000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Polar Tank been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Polar Tank dealer can also check your VIN. Recall repairs are free.