Everything you need to re-arm your Mustang PFD is in the Mustang Survival® Elite HIT Rearming Kit. Your auto hydrostatic inflatable personal flotation device will be back to top shape in no time with quality parts made to perform when it counts. Use only official Mustang Survival re-arm kits, as use of other re-arm kits can produce improper operation or failure to operate, and offbrand kits also void the warranty. Proper maintenance can reduce the likelihood of unintended inflation. Check the owner's manual for a maintenance schedule. The Mustang Survival Elite HIT Rearming Kit is ideal for models MD5183, MD5183 BC, MD5153, and MD5153 BC.