[ IMPORTANT DIAPHRAGM REPAIR AND LIQUID GASKET WARNING ]
Diaphragm Replacement Disaster: When the crankcase ventilation (PCV) diaphragm tears in N47 engines, breaking that part of the cover with a screwdriver in the industry and placing a makeshift rubber diaphragm inside, then sealing it with Japanese glue, is the biggest sabotage you can do to the engine. That cover will never hold vacuum again; the engine will draw air from outside, idle will be disrupted, and it can pump liters of oil into the intake manifold, causing the engine to run uncontrolled on its own oil and potentially explode. The only solution is to replace it with a brand new BMW F10 520d N47 Valve Cover.
Liquid Gasket Error: Applying red or black liquid silicone under this cover, which should be installed with its original gasket, can cause broken silicone pieces to clog the oil filter, leading to engine bearing failure.
The most vital upper body component of BMW's 5 Series F10 models, legendary for performance and fuel economy, is the 2.0 diesel (N47) engine; the symbol of German quality, the FEBI Bilstein brand BMW F10 520d N47 Valve Cover is now available! This system protects the camshafts and also regulates the high crankcase pressure inside the engine, which is a chronic weak point of N47 engines. Over time, due to excessive heat from the engine, an old BMW F10 520d N47 Valve Cover that has been warped or has a torn crankcase ventilation (PCV) diaphragm can lead to sudden excessive oil consumption, thick white/blue smoke from the exhaust, and completely oil-filled turbo airways. This dangerous situation, often mistakenly thought to be a "turbo failure," can be resolved by replacing it with this brand new BMW F10 520d N47 Valve Cover, made from high-temperature resistant special polymer to OEM standards, ensuring the safety of your engine block. This FEBI brand BMW F10 520d N47 Valve Cover, which comes in a plug-and-play form with its original lower rubber gasket and integrated PCV valve, cleans your F10's engine compartment of oil leaks and prevents DPF (Diesel Particulate Filter) clogging.
German FEBI Bilstein Quality Produced with the assurance of FEBI, a global giant in the automotive aftermarket, it has the same elasticity and heat resistance values as the original cover.
Integrated Flawless PCV Diaphragm The new PCV system, ultrasonically welded to the cover, perfectly filters crankcase gases; it effectively prevents oil from being pumped into the intake manifold and turbo.
Gasketed Plug-and-Play Installation Set The product comes with a pressure-resistant outer rubber gasket factory-fitted into its channel. It is ready to be directly screwed in without the need for liquid silicone.
Technical Details
| Brand |
FEBI Bilstein (A-Quality Imported Engine Component) |
| Product / Reference Code |
174674 (Located on the lower gasket) |
| Product Type |
BMW F10 520d N47 Valve Cover (Camshaft/Valve Cover) |
| Compatibility |
BMW 5 Series F10 Chassis (Only for "N47" Code 2.0 Diesel Engines. NOT COMPATIBLE with new generation B47 engines.) |
Frequently Asked Questions (FAQ)
My vehicle is consuming 1 liter of oil every 1000 kilometers and emitting white smoke from the exhaust. The mechanic said it’s the turbo. If I buy this cover instead, will it fix the issue? This is the most common diagnostic error in N47 engines. When the PCV diaphragm inside the valve cover tears, the engine draws oil from the crankcase into the intake manifold and turbo airways as a liquid instead of vapor. This oil burns in the cylinders, producing white smoke and significant oil consumption. Even if your turbo is perfectly fine, the turbo pipes will remain filled with oil. Before spending tens of thousands on a turbo overhaul, replacing this cover, which is the root cause of the problem, often resolves the issue completely.
Do I need to change the injector seals (O-rings) along with the cover? Yes, the fuel injectors must be removed when the valve cover is taken off. If the old injector seals (copper rings) are crushed and deformed and are reinstalled during the cover replacement, it will lead to compression leakage. Always use brand new injector seals of original dimensions when changing the cover.
