K&N 33-3171 Drop-In Air Filter — Fits 2021-2024 BMW M3/M4

SKU: KNN33-3171

About K&N Engineering K&N has been the world's leader in ...Read more

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Sale price$104.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About K&N Engineering

K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.

K&N 33-3171 High-Flow Replacement Air Filter for BMW M3 & M4

Elevate the performance of your BMW M3 or M4 with the K&N 33-3171 High-Flow Replacement Air Filter. Engineered for the 2021-2024 model years, including various Competition, Competition xDrive, CS, and CSL trims, this filter provides a direct, drop-in replacement for your stock air filter, ensuring a hassle-free installation.

Maximize Engine Power and Efficiency

The K&N 33-3171 features K&N's renowned layered, oiled cotton filtration media. This design is optimized to allow a greater volume of air into your engine compared to restrictive OEM filters, potentially leading to increased horsepower and improved throttle response. By ensuring a consistent and clean air supply, it helps your high-performance BMW engine operate at its peak efficiency and protects vital components from harmful contaminants.

Long-Term Durability and Value

Invest in performance that lasts. The K&N 33-3171 is designed for the lifetime of your vehicle and is fully washable and reusable. This makes it an economical and eco-friendly choice, eliminating the recurring cost and waste associated with disposable filters. Maintain its peak performance with simple cleaning and re-oiling. K&N backs this filter with their industry-standard No-Hassle Lifetime Limited Warranty.

Key Features and Fitment:

  • Vehicle Fitment: Compatible with 2021-2024 BMW M3 (Base, Competition, Competition xDrive, CS) and 2021-2024 BMW M4 (Base, Competition, Competition xDrive, CSL)
  • Performance Enhancement: Increases airflow for improved horsepower and acceleration
  • Advanced Filtration: Oiled cotton media traps dirt and debris effectively
  • Simple Installation: Direct replacement for the factory air filter
  • Reusable Design: Washable and reusable for extended vehicle life
  • Warranty: Covered by K&N's No-Hassle Lifetime Limited Warranty

Upgrade your BMW M3 or M4 with the K&N 33-3171 Drop-In Air Filter for a noticeable boost in performance and engine protection. Find this and other performance parts at GGCRACING.

About K&N Engineering

K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.

K&N 33-3171 High-Flow Replacement Air Filter for BMW M3 & M4

Elevate the performance of your BMW M3 or M4 with the K&N 33-3171 High-Flow Replacement Air Filter. Engineered for the 2021-2024 model years, including various Competition, Competition xDrive, CS, and CSL trims, this filter provides a direct, drop-in replacement for your stock air filter, ensuring a hassle-free installation.

Maximize Engine Power and Efficiency

The K&N 33-3171 features K&N's renowned layered, oiled cotton filtration media. This design is optimized to allow a greater volume of air into your engine compared to restrictive OEM filters, potentially leading to increased horsepower and improved throttle response. By ensuring a consistent and clean air supply, it helps your high-performance BMW engine operate at its peak efficiency and protects vital components from harmful contaminants.

Long-Term Durability and Value

Invest in performance that lasts. The K&N 33-3171 is designed for the lifetime of your vehicle and is fully washable and reusable. This makes it an economical and eco-friendly choice, eliminating the recurring cost and waste associated with disposable filters. Maintain its peak performance with simple cleaning and re-oiling. K&N backs this filter with their industry-standard No-Hassle Lifetime Limited Warranty.

Key Features and Fitment:

  • Vehicle Fitment: Compatible with 2021-2024 BMW M3 (Base, Competition, Competition xDrive, CS) and 2021-2024 BMW M4 (Base, Competition, Competition xDrive, CSL)
  • Performance Enhancement: Increases airflow for improved horsepower and acceleration
  • Advanced Filtration: Oiled cotton media traps dirt and debris effectively
  • Simple Installation: Direct replacement for the factory air filter
  • Reusable Design: Washable and reusable for extended vehicle life
  • Warranty: Covered by K&N's No-Hassle Lifetime Limited Warranty

Upgrade your BMW M3 or M4 with the K&N 33-3171 Drop-In Air Filter for a noticeable boost in performance and engine protection. Find this and other performance parts at GGCRACING.

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