Intake Manifold Back Cover/Valve, Aftermarket - E39 540i, E38 740i, E31 840ci

Back cover of the M62 intake manifold that contains a non-return valve as part of the crankcase vent system. Too much oil in the intake air lowers the effective fuel octane, leads to drivability issues, and causes increased emissions. A completely blocked CCV has the potential for very serious engine failure (hydrolock) if liquid oil ends up in the intake. Signs of a failing CCV include: whistling noises in the intake, blueish smoke in the exhaust, high oil consumption, and thick white or yellow gunk under the oil cap.

This part is manufactured by an aftermarket supplier of European auto parts, including many engine components. While not carrying OEM status, this part follows the design of the original very closely and uses similar materials. An aftermarket part may even have the same TUV approval as its OEM counterpart. The brand may even be OEM to another manufacturer besides BMW. This aftermarket brand has a two year warranty - the same as Genuine BMW and OEM brands.

BMW Fitments:

5 Series
E39 (97-03) > 540i
7 Series
E38 (95-01) > 740i
E38 (95-01) > 740iL
8 Series
E31 (91-97) > 840Ci