GM Genuine Parts 25518260 Multi-Purpose Seal
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It wasn't on mine, which is why I bought it.
I bought this seal for my truck, a 1991 K2500 with the 700R4 (MD8) transmission, and it fit perfectly. I had a transmission leak that was caused by that seal, but after replacing it with this part, the leak was gone, and there were no more leaks. It says it won't work when you use the Amazon part finder, but it does.
It didn't work on my turbo 350 because it was too short.
According to Amazon Vehicle Check, No. 1 is the most popular vehicle.
Selected User Reviews For GM Genuine Parts 25518260 Multi-Purpose Seal
My 91 Chevy K2500 had a leaking transmission fluid leak due to the TH700R4 transmission. I assumed the transmission pan seal was leaking because it started leaking after I changed the transmission filter and fluid. The leak persisted even after I replaced the seal. I took a closer look at the transmission and discovered that the seal to the Throttle Valve (TV) cable had failed. This part was a direct replacement for my truck, so I ordered it from Amazon and replaced it. I no longer have a leak. I replaced the TV cable at the same time as the seal.
This is the 700R4's TV cable seal.
Use this for your TV cable because it's an OEM part.
On an '88 Chevy Astro with a 700R4 transmission, I installed this. This vehicle would not fit, according to Amazon's automated system. The system needs to be fixed. It was an ideal fit.
In a 1992 Chevrolet K2500 ext cab 4x4 with a 700r4 transmission,.
It worked perfectly.
It worked perfectly. There will no longer be any leaks.
There are no issues with the fit as stated.