Hayden Automotive 397 Transmission Line Fitting Kit

Changed the fluid and filter in my Silverado. This fit right in the return opening at the radiator and let me use a nylon hose to route the fluid to a bucket. Made dropping the trans pan a lot less messy.

helpful with attaching external transmission cooler to 07 avalanche

Bought this to do a transmission service on my 2013 Chevy Silverado 1500 4x4. Fits in the trans cooler return perfectly, no leaks. It took roughly 15 minutes to replace my old fluid with new. It's an easy DIY project vs a few hundred at a transmission shop

Replace cooler line on top left of radiator (left when facing the grill of the car). Use 3/8" ID clear tube. Start engine (in park) and let coolant flow out for up to 10 seconds or so. It's recommended you measure what comes out and put the same back in to avoid the problem I'm going to describe later. Turn the vehicle off. Fill the transmission back up. Repeat. You can also run the engine until you get bubbles in the line, shut the engine off, remove the pan and not have fluid poor all over your face (I could not remove my drain plug for the life of me). Now, don't do what so many people do after a fluid swap and assume that the dipstick is right the first time after all of this effort. It won't be because the fluid will be aerated and/or not fully filling the torque converter yet. So many people think their transmission slips after doing one of these fluid swaps but don't realize they haven't filled it back up all the way. You will be dumping a bunch of fluid - like 3 gallons. You need to get 4 gallons at least for the swap to replace all the fluid for real and be able to refill the transmission to full. In order to get the dipstick to read right, you need to fill it up, check, run the car through the gears, maybe even let it move a few yards back and forth, then check again. Do this a few times. Then when you get home or to your first destination, check again. If you experience slipping after doing this swap, it could very well be you haven't put enough fluid back in. The dipstick lies after an invasive swap like this, especially when you don't measure what you take out and replace with the same. How do I know this? Because I've helped a few DIY'ers who panicked thinking their transmission failed after the swap (because you hear this happens "all the time") and it turns out they just never checked the fluid after the first attempt. Luckily nobody destroyed anything because they didn't drive very far. Be smart. Measure what you take out.

2008 3.5 GMFit where transmission line was taken out of radiator for a flush of fluid.

Worked good for draining and refilling transmission fluid on my 2011 DTS. Price is a bit high however

Made the flushing of tge transmission SO easy. Great product and a must for the toolbox.

This tube adapter is a must have if you're installing an auxiliary transmission cooler in line with your factory cooler in the radiator. No need to cut, splice of flare transmission cooler lines. Just instal this part, slide your aux cooler line to it & clamp. Worked great, the first time with no leaks or problems. Highly recommended.