Audi VW Vapor Canister - Genuine Audi VW 4M4201799D

Product Information

A vapor canister (also called a charcoal canister) is part of a vehicle’s Evaporative Emission Control System (EVAP). It contains activated charcoal that absorbs and stores fuel vapors from the gas tank. Later, these vapors are purged into the engine and burned during combustion, preventing them from escaping into the atmosphere.

• Check Engine Light (CEL) – often triggered by EVAP system error codes (like P0440–P0456).
• Fuel odor around the vehicle – strong smell of gasoline near the rear or undercarriage.
• Difficulty refueling – gas pump nozzle frequently clicks off due to vapor flow issues.

About Genuine VW Audi

The Volkswagen Group, also known as “VAG”, consists of Volkswagen, Audi, Lamborghini, Bentley, Bugatti, Porsche, Ducati, MAN, Scania, SEAT, and Skoda. The original parts used by VAG to build your car are available as replacement parts under the “Genuine VAG” brand. Manufactured under the direction of VAG, expect excellent quality and a premium price since these parts are available exclusively through the VAG Dealership network.

You may not realize this, but the parts that make up your VAG are not necessarily manufactured by VAG. No cause for concern, as VAG designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for VAG 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 VAG parts box and find an OEM branded part inside, simply with the addition of a VAG 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.