The steel side cover on my 87 M pump was leaking. The only gasket I can find is for the 1990s updated M pump with an aluminum side cover. That aluminum side cover uses a skinnier gasket which sits in a channel inside the side cover. I've tried using the skinny gasket with the steel cover and it just doesn't seal propetly. The 87 thick gasket is no longer available and my steel side cover is warped. Does anybody have a part number or a lead on the aluminum side cover used on the 1990s om603 and om606?

Steel side cover gasket 0010741180 NLA


Aluminum side cover gasket 0010743780 available but useless without an aluminum side cover.


Stamped sheet steel side cover as used on the 87.


Aluminum side cover used on 1990s om603/om606.


Thank you

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CENSORED due to not family friendly words