For 1981 to 1985 Turbo Diesel 300D 300TD 300CD and 300SD
Custom ordered for a better fit than original! special Oring seal for the bowden cable housing where it connects to the right side of the automatic transmission. This is a common leak area and you may be fooled into thinking it is leaking out of the pan gasket.
617 Turbo Diesel Transmission Bowden Cable O-ring Seal
$2.95
SKU:
TRS-BCABLEORING 
Product Details
Replacement is not easy without the right tool and instructions. It can be a little "tricky" getting the bowden cable out and back in just to replace this inexpensive o-ring.
For Kent's video instructions as well as the special tool you should have on hand to complete this job see related products.