Ford Replacement Diesel Engine?

[HBR]

I have a Ford Industrial Diesel Replacement Engine with casting number D1NL 8015A and I'm looking for help finding a seal for the timing chain cover. I have an oil leak where the shaft comes out of the timing chain cover and drives the pump.

 

[Bob Rooks]

It could be a Dagenham engine. Thousands of these engines were sold.
Ford Dagenham - Wikipedia, the free encyclopedia