Overview The B&M NAG-1 Locking Transmission Dipstick was designed to allow for a quick and easy check of the automatic transmission fluid level and quality by the vehicle owneroperator without having to go to the dealership. Constructed of billet steel and black mil-spec anodized aluminum 6061-T6, this rugged unit allows for both cold and warm fluid level checks and is meant to be left in the vehicle and locked into place. Additional features include an engraved B&M logo locking knurled handle cap and temperature range engraved indicator end. Fits NAG-1 automatic transmission used on 2008-2014 Dodge Challenger, 2005-2008 Dodge Magnum, 2006-2014 Dodge Charger and 2005-2014 Chrysler 300 models with the 5.7L engine Features Engraved Low and Normal Transmission Temperature Indicator Rugged Knurled and B&M Logo Engraved Locking Cap Billet Steel and Aluminum6061-T6 Construction Over 65 Years of B&M Quality Quick and Easy Installation B&M Quality & Reliability TECHNICAL SPECS Dipstick/Filler Tube Length (in) 33.8