If your e39 has a lot of miles on it then replacing all the gaskets may actually may be a good idea.
Bmw e39 crankcase vent valve replacement.
Replace the valve cover gasket found engine oil seep 390 replace the crankcase ventilation pcv valve hoses valve 560 replace the engine oil filter housing gasket 590 replace windshield washer pump found washer reservoir cracked leaking 210 total with tax comes to 1 855.
Ccv crankcase vent valve see also pcv osv cvv cpv but not clutch control valve should be cdv cpv crankcase pressure valve the official name for the ccv aka osv cvv pcv.
Crankcase vent valve oil separator kit cold climate e46 e39 e60 x3 x5 z3 z4 genuine bmw 3 piece ccv kit insulated oil separator and attached hoses price.
Bmw specific e39 acronyms.
Bmw says you need to remove the intake manifold to replace the valve but that means fuel lines being disconnected intake mani gaskets being replaced and so forth.
The cost below include parts and labor from my bmw dealer.
You do not have to remove the cover to perform this repair.
This is not intended to be a how to replace the ccv diy ccv synonyms.
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A premium pcv crankcase vent valve replacement for bmw e31 e38 e39 540i 1997 2003 740i 740il 840ci 29 99 only 20 left in stock order soon.