BMW Silicone Air Plenum Gasket Set - NRW Design S85IPC

Product Information

An engine intake manifold gasket seals the intake manifold to the cylinder head. Its primary job is to ensure that all metered air that has been taken in through the air intake system is delivered to the engine without any air being lost through a leak at the manifold to the cylinder head connection. It also keeps any unmetered air, dirt, and debris from entering the intake manifold to the cylinder head connection.

On older vehicles and engines, these are usually flat gaskets made of paper or similar composite materials, or may occasionally be a multi-layer metal gasket. On newer vehicles, they are often made of rubber or similar elastomer materials. An engine intake manifold gasket may be a single-piece part that will seal all of the intake runners to the cylinder head or a singular gasket that is used multiple times on a per-cylinder basis. The color, shape, and materials can vary depending on the brand, manufacturer, and application, but are often orange and orange/brown, or green.

It is common practice to replace the engine intake manifold gasket any time that you have the intake manifold removed from the cylinder head. This ensures that when you assemble the intake system, it is free of leaks or other issues. This is especially important on turbocharged or supercharged engines that have positive manifold pressures above the atmospheric pressure.

• Air leaks: Over time, your intake manifold gasket will degrade because of heat, vibration, and exposure to oils and other solvents. Paper or composite gaskets can begin to break down and chunk apart. Rubber gaskets can become hard and brittle. This can let dirt and debris in but is more likely to cause an air intake flow fault or CEL.
• Swelling / Damage from external sources: Cleaners, solvents, and other chemicals such as brake clean can cause rubber and other elastomers to swell and cause issues.
• Loss of elasticity: Eventually the rubber or material will harden and lose its elasticity, eventually becoming brittle and easily damaged. These gaskets will appear completely flat and will not reseal at all if they are reused.
• Check Engine Light: Excessive unmetered air from a bad intake manifold gasket can result in a CEL for an air intake leak fault or other airflow-related diagnostic trouble codes.
• Misfire: A severe air intake leak can cause rough running and an engine misfire.
• Oil residue: Because the positive crankcase ventilation system feeds air that may oil vapor into the intake to be burned during combustion, it is common for a bad or failed intake manifold gasket to result in oil residue on or around the intake manifold.

About NRW Design

As in life, everything starts like… A Pilot (N), an Engineer (R) and a Master Mechanic (W) walk into a bar …

This time though it was not a joke but an amazing friendship that formed. A friendship that all had a common goal. The betterment and improvement of what we drive. The best part is we all come from different circles of life and bring different things to the table, all capitalizing and improving the ideas of the others. Each of our talents exemplifies the other allowing us to be able to analyze an issue and be able to solve the problem at hand with a solution.

Having access to CMM machines 4-axis mills and lathes as well as metal cutters, benders, and any tool needed to design and manufacture the ideas allows us to be able to analyze design and construct what could be impossible to many.

We are all BMW enthusiasts and are designing products for other BMW enthusiasts. We are using our talents to help create solutions to issues we see in our industry.

Our goal is to provide product design and engineering that meets the standards of the pilot, makes the life of a master mechanic easier, and is approved by the engineer.