I have a diesel injection pump on my 85 300sd that is leaking oil. The pump is fine condition other than the leak. The shop I use cannot find a gasket for the pump. If I can't find a gasket then I have to replace the entire pump. The gasket is inside the pump but on the end that can be taken off without special tools, getting too deep in the pump. See photo, I have circled the end in red. Just inside their is a gasket, this needs to be replaced. The bosch part number for the pump is: 0403245014

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1985 300SD - 268K
1989 300TE - 170K