K&N 33-2078 Replacement Air Filter — Fits 1989-1995 BMW 525i, 525iT, M5

SKU: KNN33-2078
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Sale price$64.99
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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 33-2078 High-Flow Replacement Air Filter for BMW

Elevate your driving experience with the K&N 33-2078 High-Flow Replacement Air Filter, specifically engineered for select BMW models. This premium air filter is designed to seamlessly integrate into your vehicle's factory air box, offering a straightforward upgrade that yields significant performance benefits. By optimizing airflow, the K&N 33-2078 allows your engine to breathe more freely, resulting in a noticeable increase in horsepower and torque.

Unmatched Filtration and Longevity

At the heart of the K&N 33-2078 is its advanced filtration system, featuring K&N's renowned layered, oiled cotton gauze. This media is meticulously designed to capture harmful contaminants while maximizing air volume, ensuring both engine protection and peak performance. Unlike standard paper filters that can become restrictive as they accumulate dirt, the K&N 33-2078 is engineered to be washable and reusable. With proper maintenance, this filter can last for the lifetime of your vehicle, providing exceptional value and reducing environmental impact.

  • Performance Boost: Designed to increase horsepower and acceleration.
  • Superior Filtration: Protects your engine with high-capacity oiled cotton media.
  • Reusable Design: Washable and re-oilable for long-term use.
  • Easy Installation: Direct replacement for your stock air filter.
  • Built to Last: Engineered for durability and extended service life.
  • K&N Warranty: Comes with a 10-Year/Million Mile Limited Warranty.

Vehicle Fitment:

This K&N 33-2078 air filter is compatible with the following BMW vehicles:
BMW: 525i (1989-1995), 525iT (1993), M5 (1991-1993)
Ensure your BMW model and year are listed to guarantee a perfect fit and unlock its performance potential. Choose the K&N 33-2078 for superior airflow and lasting quality, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1989-1995 BMW 525i Base
1993 BMW 525iT Base
1991-1993 BMW M5 Base

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 33-2078 High-Flow Replacement Air Filter for BMW

Elevate your driving experience with the K&N 33-2078 High-Flow Replacement Air Filter, specifically engineered for select BMW models. This premium air filter is designed to seamlessly integrate into your vehicle's factory air box, offering a straightforward upgrade that yields significant performance benefits. By optimizing airflow, the K&N 33-2078 allows your engine to breathe more freely, resulting in a noticeable increase in horsepower and torque.

Unmatched Filtration and Longevity

At the heart of the K&N 33-2078 is its advanced filtration system, featuring K&N's renowned layered, oiled cotton gauze. This media is meticulously designed to capture harmful contaminants while maximizing air volume, ensuring both engine protection and peak performance. Unlike standard paper filters that can become restrictive as they accumulate dirt, the K&N 33-2078 is engineered to be washable and reusable. With proper maintenance, this filter can last for the lifetime of your vehicle, providing exceptional value and reducing environmental impact.

  • Performance Boost: Designed to increase horsepower and acceleration.
  • Superior Filtration: Protects your engine with high-capacity oiled cotton media.
  • Reusable Design: Washable and re-oilable for long-term use.
  • Easy Installation: Direct replacement for your stock air filter.
  • Built to Last: Engineered for durability and extended service life.
  • K&N Warranty: Comes with a 10-Year/Million Mile Limited Warranty.

Vehicle Fitment:

This K&N 33-2078 air filter is compatible with the following BMW vehicles:
BMW: 525i (1989-1995), 525iT (1993), M5 (1991-1993)
Ensure your BMW model and year are listed to guarantee a perfect fit and unlock its performance potential. Choose the K&N 33-2078 for superior airflow and lasting quality, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1989-1995 BMW 525i Base
1993 BMW 525iT Base
1991-1993 BMW M5 Base

Product Details

Product Description

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 33-2078 High-Flow Replacement Air Filter for BMW

Elevate your driving experience with the K&N 33-2078 High-Flow Replacement Air Filter, specifically engineered for select BMW models. This premium air filter is designed to seamlessly integrate into your vehicle's factory air box, offering a straightforward upgrade that yields significant performance benefits. By optimizing airflow, the K&N 33-2078 allows your engine to breathe more freely, resulting in a noticeable increase in horsepower and torque.

Unmatched Filtration and Longevity

At the heart of the K&N 33-2078 is its advanced filtration system, featuring K&N's renowned layered, oiled cotton gauze. This media is meticulously designed to capture harmful contaminants while maximizing air volume, ensuring both engine protection and peak performance. Unlike standard paper filters that can become restrictive as they accumulate dirt, the K&N 33-2078 is engineered to be washable and reusable. With proper maintenance, this filter can last for the lifetime of your vehicle, providing exceptional value and reducing environmental impact.

  • Performance Boost: Designed to increase horsepower and acceleration.
  • Superior Filtration: Protects your engine with high-capacity oiled cotton media.
  • Reusable Design: Washable and re-oilable for long-term use.
  • Easy Installation: Direct replacement for your stock air filter.
  • Built to Last: Engineered for durability and extended service life.
  • K&N Warranty: Comes with a 10-Year/Million Mile Limited Warranty.

Vehicle Fitment:

This K&N 33-2078 air filter is compatible with the following BMW vehicles:
BMW: 525i (1989-1995), 525iT (1993), M5 (1991-1993)
Ensure your BMW model and year are listed to guarantee a perfect fit and unlock its performance potential. Choose the K&N 33-2078 for superior airflow and lasting quality, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1989-1995 BMW 525i Base
1993 BMW 525iT Base
1991-1993 BMW M5 Base

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