BMW Cylinder Head Gasket (540i 740i 740iL X5) - Genuine BMW 11121433478

Product Information

A cylinder head gasket seals the cylinder head to the engine block. A head gasket performs a few important functions. For starters, a head gasket seals the combustion chamber of the engine allowing the engine to create proper compression. In addition, head gaskets seal oil and coolant passages between the cylinder head and engine block which prevents fluids from mixing or entering the combustion chamber.

• Overheating engine
• Low cylinder compression
• External oil or coolant leak
• White smoke from exhaust
• Bubbles in radiator or expansion tank
• White/milky engine oil

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.