K&N 21-22 Mercedes-Benz C300 2.0L L4 Replacement Air Filter

SKU: 33-3173 | UPC: 024844394217

K&N High-Flow Lifetime Air Filter for 2021-2022 Mercedes-Benz C300 2.0L L4

This K&N 33-3173 replacement air filter is designed for the 2021-2022 Mercedes-Benz C300 2.0L L4 engine, including Base and 4Matic submodels. It uses advanced oiled cotton gauze media to deliver up to 50% more airflow than stock filters while trapping dirt and debris for engine protection. Drivers gain better throttle response, increased horsepower and torque, plus a washable design that lasts your vehicle's lifetime with a 10-Year/Million Mile Limited Warranty.

Key Features

• High-Flow Oiled Cotton Media: Multi-layer gauze captures contaminants at 99% efficiency while allowing maximum air intake for power gains.
• Washable and Reusable: Clean and re-oil every 50,000 miles using K&N Recharger Kit (sold separately) to maintain performance without replacements.
• Direct Drop-In Fit: Matches factory airbox dimensions of 11.063 in L x 7.625 in W x 1.625 in H for simple installation in minutes.
• Performance Boost: Improves engine breathing for quicker acceleration, better fuel efficiency, and up to 2.4 MPG gains reported by users.
• Lifetime Durability: Built with premium materials and backed by K&N 10-Year/Million Mile Limited Warranty for long-term reliability.

Product Notes

• Verify vehicle fitment by year, make, model, submodel, and 2.0L L4 engine before purchase.
• Clean filter regularly per K&N instructions to preserve warranty and airflow performance.
• Product weight is 1.1 lbs. ships in protective retail box.

Installation Notes

• Professional installation recommended.
• Remove factory air filter from airbox. insert K&N 33-3173 panel filter directly with no tools needed.
• No modifications, adapters, or additional hardware required for OEM airbox compatibility.

This Part Fits

Why Choose K&N?

• Over 50 years engineering high-performance air filters trusted by millions of drivers worldwide.
• Proven dyno-tested gains in horsepower and torque on Mercedes-Benz engines.
• Precision-molded rubber seals ensure airtight fit in factory housings for zero air leaks.

Frequently Asked Questions

• Q: Does this fit my 2022 Mercedes C300 4Matic 2.0L?
  A: Yes, the 33-3173 installs directly into the factory airbox of 2021-2025 C300 Base and 4Matic models with 2.0L L4 engine.
• Q: What material is used in this filter?
  A: Multi-layered oiled cotton gauze provides high airflow and filtration down to 10 microns for engine safety.
• Q: What is the warranty and maintenance process?
  A: 10-Year/Million Mile Limited Warranty. wash with K&N kit every 50,000 miles, re-oil, and reinstall.

Shipping & Handling

• Method: Standard ground shipping via UPS or FedEx
• Availability: In stock - ships same or next business day
• Packaging: Secure retail box measuring 12.5 in x 8.5 in x 2.5 in
• Weight: 1.1 lbs net weight, 1.2 lbs shipping weight