M2/M3-Series Bradleys… New NBC Hose Disconnect

Crewmen, if your Bradley is still equipped with the NBC quick disconnect for the M42 protective mask, you’ll need to get it ready for the newly-fielded M51 protective mask.

That means replacing the NBC heater hose’s current quick connect adapter, NSN 4240-01-486-7210, with a new style quick disconnect coupling half, NSN 4730-00-935-1643. You’ll also need to install a new hose clamp, NSN 4730-00-541-8297.

MS-6809-S Fig 1

You’ll find information on removing the old parts and installing the new ones in TM 9-2350-408-13&P in IETM EM 0356 (Apr 15).

Be sure to order enough parts for the vehicle commander, gunner and driver positions. The dismount stations will get a retrofit at a later date.

Get the parts at no charge by contacting Brianne Woodell with the Armored Brigade Combat Team at

DSN 786-2448, (586) 282-2448, email:


For more details, check out TACOM maintenance action message 15-039 on the TACOM-Unique Logistics Support Applications (TULSA) website:


You’ll need your CAC and first-time users must request access.


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