2014–2016 Polar Tank Dot 406 Tank Trailer, 2014–2016 Polar Tank Dot 407 Tank Trailer, 2014–2016 Polar Tank Dot 412 Tank Trailer and 2 other models Recall: These trailers are equipped with certain Bendix SR5 spring brake valves…
NHTSA campaign 16V524000 · Parking Brake · filed Jul 11, 2016 · verified Jul 30, 2026
The defect
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.
The risk
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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.
Affected vehicles
Related recalls
Other campaigns involving Polar Tank vehicles
All Polar Tank Dot 406 Tank Trailer recalls → · All Polar Tank recalls →
Source: NHTSA recall database, campaign 16V524000. Data last verified Jul 30, 2026.