Identification 6HP26 - 6HP26X - 6HP28 - 6HP26L - 6HP28L - 6HP32 - 6HP32L - metal oil pan
black rubber (NBR) gasket - 21 bolt oil pan - (genuine is a paper gasket) - originally this transmission has a plastic oil pan with integrated filter - this oil pan gasket is NOT for this plastic oil pan but for the metal oil pan which can be used with a separate filter to replace the plastic oil pan.