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Your cart is empty.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 owner/operator 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 the NAG-1 automatic transmission used on 2008 to 2012 Dodge Challenger, 2005 to 2008 Dodge Magnum, 2006 to 2012 Dodge Charger and 2005 to 2012 Chrysler 300 models with a 5.7L V8 engine.
Ron S
2025-09-03 17:20:51
Fits well and dresses up the engine compartment a bit.the tricky part about checking the NAG-1 fluid is the temperature of the fluid. It is kind of a guess if you don't know the exact fluid temp.I guess if you check it after a long ride, you know it is up to the "hot" marking. Internet forums are evenly divided on the accuracy vs the factory tool.
Mech Eng
2025-06-24 09:25:03
love being able to check my tranny fluid instead of bringing it to a dealer. fits in perfect, nice and snug and gives an accurate reading
abowlen77
2025-06-16 13:15:10
IF I can get this damn thing OUT of my transmission and tube, I'm going to return it. It simply wont come out. 2007 Dodge Charger Pursuit (police) version w/Hemi 5.7 and NAG1 Automatic Transmission.In addition to it NOT COMING OUT, it makes my fluid level sensor go on and off randomly, depending on whether I'm accelerating or decelerating. This was a tremendously disappointing product. If I cannot get it out, I'm going after the manufacturer for such a faulty product.
Oldyeller
2025-06-13 16:15:38
Alls I can say is I have owned my 05 Magnum for a while now. Never being able to check all my fluids drives me nuts. I understand to check this properly you need a starscan for temps and the miller tool for dipstick measurements. This has a cold spot for fluid and a hot spot. You can also finally get a look at your fluid to check its color. I give it 4 for being there. I have. Total accuracy on the levels I cannot say for sure. I do have the 5.7 version. Take note what you are buying though. These are made for the different motors offered by chrysler.
Dean A. Burrell
2025-06-12 20:54:02
Great product! Nice to know the fluid level without having to go to the dealer...Due to it's "newness" the knob was a bit stiff to fully insert in the fill tube where it would lock in place, even with lubricating the "O" ring on the knob. I found I had to tap it with the heel of my hand to fully install it then it would turn the 90 degrees to lock.
David Roriguez
2025-04-15 10:16:08
Works as it says perfect
Big Al
2025-03-25 21:04:30
Just what every guy or gal needs that has a Chrysler with a HEMI ...was surprised when checking the oil and washer fluid a couple of weeks ago there was just this annoying cap on dip stick tube that said FOR DEALER USE ONLY ...called dealer and can understand they want to make sure you only add OEM fluid as not to void warranty ... heck all I wanted to do was check my fluid level and they wanted me to make an appointment to come in and charge me $49.50 ...no way ... fit perfectly and if and when I need to add proper OEM fluid I will do it myself ... highly recommend and everyone should own a HEMI at least once if or not more times in their life.
Shogun2
2025-02-18 19:15:56
Works & Looks Great! Another great product from B & M, which they have always had a history of providing to performance fans.
jim
2025-02-14 10:01:28
works great,just like the write up and the reviews say it does.
Icarus
2025-02-07 15:42:19
Nice aluminum head with wire stick. Hard to read the marked part, would be easier to read a different color then black! Bit overpriced (@99.71.) would be great if it was 20 less! Bit hard to get to turn/lock at times. I put a lil dab of oil on it and still couldn't take it off, and had to use pliers to pull it off, thought I was going to break the whole tube to get it out last time! Doesn't fit right, won't go back in my engine now...
Geoff J. Walton
2025-01-07 11:54:03
Fit great. Looks great under the hood. Easy to read fluid level. Very happy with purchase.
krd
2024-12-05 18:10:23
perfect
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