*** SPECIAL NOTE: Anyone making air brake assemblies must register with DOT and ensure each assembly complies with FMVSS-106. We strongly urge customers that are selling or using DOT couplings to be aware of knock off, economical couplings that are simply "stamped" with DOT markings and have not been through any form of certified DOT testing. Our below genuine N650xx Series and Aeroquip couplings have been fully tested, certified, and listed with The Department of Transport in North America (DOT). When assembling actual Aeroquip SAE100R5 DOT "hose", it is strongly recommended by the manufacturer to only use Aeroquip brand crimp or field attachable couplings.

Warning: If for DOT Air Brake use, Assembler Must Register with DOT