They make pan gaskets out of neoprene rubber. Make sure the pan flange is good and flat at the screw holes. It doesnt take much to snug it up. I bought one that's a deep sump pan for a jeep with an A904 from a jeep offroad site complete with built in drain plug. Heavy gage powdercoated steel. Jeeps also use A727s as well. Comes with neoprene gasket, filter, longer screws and filter extender. I think I payed $50 for it. Price has gone up a bit. It's got a built in drain and is really thick gage steel. RT offroad for A904 or A999
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