Aftermarket tranny drain plugs?

[N Heat]

I have been tempted for a while to install an aftermarket B&M drain plug for my transmission pan. Does anyone have one installed with no leaks?

 

[DABEAR95]

I am interested in this as well...


Jason

 

[Kestas]

I've installed a few. The best success is if it's brazed to the pan. I have one that's leaking, I think I need to put teflon tape on the plug that is pipe threaded.

 

[RF Overlord]

I've not had good luck with the B&M ones...all three I installed leaked (on 3 different vehicles). I ended up replacing the transmission pans with factory versions that came with drain plugs built-in...no more leaks.

 

[KBFXDLI]

B&M makes a real cool looking extra capacity oil pan for the GM 4L60 series trans. Adds 3 quarts of capacity and comes with a drain plug. $179

 

[1maniac]

After convincing the NAPA parts guy that they do indeed sell a $1.99 drain plug kit. I put them on everything I own. DO use teflon tape on the threads of the drain plug itself. They tend to leak. DO NOT overtorque the hollow bolt that seals to the pan with the plastic/nylon washer. Once you distort this washer it will leak and you will need to replace it. Other than that remember to use a backup wrence when you remove the plug so you don't loosen the entire setup. ATF drain plug IMHO is priceless. BTW, I take back what I said about "everything I own," the 540i comes stock with a drain plug on the ATF pan. good luck.

 

[Win]

I installed one on the transmission pan of the 4L60E in my Blazer, and the 4L80E in my Xj12 came with one factory installed. Neither leak.

Frankly, it's a lot easier to get a vaccuum extractor and just pull the fluid out through the dipstick. I don't use the drain plugs very often.

 

[alreadygone]

As a auto service tech, I put drain plugs in all my own vehicle transmissions. With pan off drill hole in suitable location, take to reputable welding shop and have threaded steel tab welded INSIDE pan. Then when you screw plug in it seals against pan itself. Doesn't matter if tab inside pan is welded leak proof if plug gasket is sealed against pan itself. You can even have tab threaded to use exact same plug as engine oilpan!

'95 S10 blazer has 215,000 miles with original transmission! Change 4qt pan capacity EVERY oil change.

 

[Win]

Quote:

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With pan off drill hole in suitable location, take to reputable welding shop and have threaded steel tab welded INSIDE pan.

Change 4qt pan capacity EVERY oil change.

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When I took the pan off of my 4L60E on my Blazer, it looked really tight in there, so I had the threaded nut welded to the outside of my pan. Wherever the nut is placed, it should be welded to the pan.

Totally agree with changing the transmission pan fluid every oil change - it's crazy not to take this simple and inexpensive step when the engine oil is changed. I had two ZF transmissions in my Jaguars go well over 200K and still shift like new.

 

[alreadygone]

obviously outside the pan is better, as long as welder can make it leak free. Inside pan is simply more idiot proof.

Bob