Set of 2 K&N Air Filters – Mercedes M273 V8 E550 CLS550 S550 CLK550

This isn’t just a replacement — it’s a proven performance upgrade for Mercedes-Benz M273 V8 engines. Each vehicle requires two filters, and this complete kit includes both K&N 33-2181 filters needed for a full replacement. Designed to increase airflow, restore lost horsepower, and sharpen throttle response, they also provide superior filtration and lifetime reusability.

📦 Mercedes M273 Vehicle Compatibility

Kit includes 2 filters — complete replacement for one vehicle.

💡 Why Upgrade to a K&N 33-2181 Air Filter Kit for Mercedes M273 V8?

• Performance Boost: Up to +10 hp with both filters installed
• Throttle Response: Quicker acceleration and stronger midrange pull
• Lifetime Value: Washable, reusable, backed by K&N’s Million Mile Warranty
• Maintenance Interval: Clean approximately every 15,000 miles under normal driving
• Direct Replacement: No modifications required; works seamlessly with the factory ram-air box

Want to know why drop-in filters outperform aftermarket cone setups? Read our full guide: Mercedes Intake Guide: Why Drop-In Filters Beat Cone Intakes.

🔧 Easy Installation

1. Pull off the front engine cover.
2. Remove the front section of the intake housing.
3. Release the metal latch at the back where the airbox connects to the throttle body.
4. Flip the housing upside down and remove the Torx screws.
5. Swap in both new K&N 33-2181 filters (arrows facing airflow).
6. Reassemble and snap the housing + cover back in place.

Time: ~15 minutes with a Torx driver.

⚙️ Mercedes M273 Performance Upgrade Path

The K&N filter kit is the foundation of a complete breathing package for your M273-powered Mercedes. Pair it with the following upgrades for maximum results:

• X-Pipe Exhaust: Improves exhaust scavenging, midrange torque, and high-RPM horsepower while removing restrictive secondary cats (No CEL).
• Mid-Length Headers: Balanced high-flow design boosts horsepower above 4,000 rpm without killing low-end torque.
• ECU Tune: Optimizes fueling and ignition to unlock the combined intake/exhaust gains.

🚀 Why M273 Owners Choose This Kit

It’s more than a replacement — it’s the entry point into performance mods for the Mercedes M273 engine. Start with airflow, then add exhaust flow and tuning for a complete transformation.

⚠️ Kit includes 2 filters — the complete upgrade for one Mercedes M273 V8 vehicle.

📦 In stock and ships within 1 business day — backed by K&N’s Million Mile Warranty.