Item 70020427 has must read information.
: Due to multiple changes made by the vendor to the transmission control unit there are now 3 different options of gasket replacement...Please refer to the attached chart to ensure proper part replacement. 
: a zf Gaskets 

RANGE VALVE HOUSING

$446.08
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70020427

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: 10  : 8  : 5  : 2.2

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EA
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RANGE VALVE HOUSING - 70020427