4L60E and 4L65E Lower Valve Body Gasket.

There are two possible lower valve body gasket for the 4L60E and only one possibility for the 4L65E. From 1993 to 2000 is one design and the other, which includes the 4L65E, is from 2001 and up. Lower valve body can also be referred as the gasket between the spacer plate and valve body.

In the picture below you can see from the arrow some of the more noticeable differences between the two. The one with the white stripe and what appears to be an "A" and "B" cut into the gasket is the one from 2001 and up.

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