OEM BMW B58 Downpipe / Decat / Sport cat Gasket 18328612538

Genuine BMW gasket for the top of the downpipe.

Fits stock catalytic converters and all aftermarket downpipes we sell.

Part number is 18328612538

Fits all B58 engines: M140i, M240i, 340i, 440i, 540i and 740i