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SKU: 33-3171 | UPC: 024844393371
K&N 33-3171 Replacement Air Filter for 2021-2023 BMW M3 and M4 L6 3.0L
K&N 33-3171 is a washable reusable high-flow air filter designed as a direct drop-in replacement for your factory air box. It fits 2021-2023 BMW M3 Base, Competition, Competition xDrive and M4 Base, Competition, Competition xDrive models with the 3.0L engine. This filter uses layered oiled cotton media to deliver more airflow for increased horsepower and acceleration while trapping contaminants for engine protection.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with a tacking agent form a mesh that blocks and traps dirt and debris more effectively than paper filters.
- Clean Every 75,000 Miles: Lasts up to 5 years or 75,000 miles under normal highway driving, based on 15,000 miles per year average.
- Easy Drop-In Installation: Pre-oiled and ready to install in minutes without tools into your OEM air box for immediate performance gains.
- Increased Horsepower: High-flow media improves engine airflow, acceleration, and overall performance with dyno-tested results.
- Lifetime Durability: Built with premium materials to last the life of your vehicle, backed by K&N No-Hassle Lifetime Limited Warranty.
Product Notes
- Filter measures 11.063 in length x 7.75 in width x 1.563 in height for precise fit.
- Clean with K&N cleaning kit every 75,000 miles. re-oil before reinstalling.
- Ships in protective box. product weight 1 lb (0.5 kg).
Installation Notes
- Professional installation recommended.
- Remove factory filter from air box and replace with K&N 33-3171. no modifications needed.
- Compatible with OEM air box hardware. pre-oiled for instant use.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2023 | BMW | M3 | Base |
| 2021-2023 | BMW | M3 | Competition |
| 2022-2023 | BMW | M3 | Competition xDrive |
| 2021-2023 | BMW | M4 | Base |
| 2021-2023 | BMW | M4 | Competition |
| 2021-2023 | BMW | M4 | Competition xDrive |
Why Choose K&N?
- Over 50 years of engineering high-performance filtration for automotive enthusiasts.
- Reusable design cuts replacement costs and landfill waste compared to disposables.
- State-of-the-art cotton gauze media proven to boost airflow without sacrificing filtration.
Frequently Asked Questions
-
Q: Does this fit my 2022 BMW M3 Competition xDrive?
A: Yes, K&N 33-3171 is confirmed to fit 2021-2023 BMW M3 Competition xDrive with 3.0L engine as a direct OEM replacement. -
Q: What material is used in this filter?
A: Layered oiled cotton gauze with 4 protective layers, washable and reusable for long-term performance. -
Q: What is the warranty and maintenance schedule?
A: Backed by K&N No-Hassle Lifetime Limited Warranty. clean every 75,000 miles under normal conditions.
Shipping & Handling
- Method: UPS or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Box dimensions 12.25 in x 10.5 in x 3.88 in
- Weight: 1 lb product weight
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