K&N 33-2005 Drop-In Air Filter for BMW (1975-1985)

SKU: KNN33-2005
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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.

Enhance Your BMW's Performance with the K&N 33-2005 Air Filter

Unlock the potential of your BMW with the K&N 33-2005 Drop-In Air Filter. Engineered for a wide range of BMW models from the mid-70s to mid-80s, this high-performance air filter is designed to deliver superior airflow and exceptional filtration. By allowing more air into your engine, the 33-2005 can contribute to increased horsepower and improved throttle response, giving your classic BMW a noticeable performance boost.

Why Choose the K&N 33-2005?

  • Increased Airflow: Features K&N's signature oiled cotton gauze media, which allows for significantly more air to pass through compared to standard paper filters.
  • Engine Protection: Effectively captures up to 99% of airborne contaminants, safeguarding your engine from damaging particles.
  • Washable & Reusable: This filter is designed to be washed and reused, offering a cost-effective and environmentally friendly solution for the life of your vehicle.
  • Easy Installation: As a direct drop-in replacement, the 33-2005 fits seamlessly into your BMW's factory air box, requiring no special tools or modifications.
  • Built to Last: Constructed with durable materials to ensure longevity and consistent performance.
  • Backed by Warranty: Comes with K&N's 10-Year/Million Mile Limited Warranty for your confidence.

This K&N air filter is compatible with various BMW models including the 3.0Si, 318i, 320i, 325e, 528e, 528i, and 633CSi from model years 1975 through 1985. Give your BMW the clean, unrestricted airflow it deserves. Trust K&N Engineering for quality and performance.

Upgrade your BMW's air intake system with the K&N 33-2005 Drop-In Air Filter and feel the difference. Order yours today!

Vehicle Fitment

Years Make Model Trim
1975-1976 BMW 3.0Si Base
1984-1985 BMW 318i Base
1980-1983 BMW 320i Base
1984-1985 BMW 325e Base
1982-1985 BMW 528e Base
1979-1981 BMW 528i Base
1977-1978 BMW 530i Base
1983-1984 BMW 533i Base
1985-1987 BMW 535i Base
1988 BMW 535is Base
1978-1984 BMW 633CSi Base
1985-1989 BMW 635CSi Base
1978-1984 BMW 733i Base
1985-1987 BMW 735i Base
1987 BMW L6 Base
1986-1987 BMW L7 Base
1988-1991 BMW M3 Base
1990-1992 Yugo Cabrio 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.

Enhance Your BMW's Performance with the K&N 33-2005 Air Filter

Unlock the potential of your BMW with the K&N 33-2005 Drop-In Air Filter. Engineered for a wide range of BMW models from the mid-70s to mid-80s, this high-performance air filter is designed to deliver superior airflow and exceptional filtration. By allowing more air into your engine, the 33-2005 can contribute to increased horsepower and improved throttle response, giving your classic BMW a noticeable performance boost.

Why Choose the K&N 33-2005?

  • Increased Airflow: Features K&N's signature oiled cotton gauze media, which allows for significantly more air to pass through compared to standard paper filters.
  • Engine Protection: Effectively captures up to 99% of airborne contaminants, safeguarding your engine from damaging particles.
  • Washable & Reusable: This filter is designed to be washed and reused, offering a cost-effective and environmentally friendly solution for the life of your vehicle.
  • Easy Installation: As a direct drop-in replacement, the 33-2005 fits seamlessly into your BMW's factory air box, requiring no special tools or modifications.
  • Built to Last: Constructed with durable materials to ensure longevity and consistent performance.
  • Backed by Warranty: Comes with K&N's 10-Year/Million Mile Limited Warranty for your confidence.

This K&N air filter is compatible with various BMW models including the 3.0Si, 318i, 320i, 325e, 528e, 528i, and 633CSi from model years 1975 through 1985. Give your BMW the clean, unrestricted airflow it deserves. Trust K&N Engineering for quality and performance.

Upgrade your BMW's air intake system with the K&N 33-2005 Drop-In Air Filter and feel the difference. Order yours today!

Vehicle Fitment

Years Make Model Trim
1975-1976 BMW 3.0Si Base
1984-1985 BMW 318i Base
1980-1983 BMW 320i Base
1984-1985 BMW 325e Base
1982-1985 BMW 528e Base
1979-1981 BMW 528i Base
1977-1978 BMW 530i Base
1983-1984 BMW 533i Base
1985-1987 BMW 535i Base
1988 BMW 535is Base
1978-1984 BMW 633CSi Base
1985-1989 BMW 635CSi Base
1978-1984 BMW 733i Base
1985-1987 BMW 735i Base
1987 BMW L6 Base
1986-1987 BMW L7 Base
1988-1991 BMW M3 Base
1990-1992 Yugo Cabrio 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.

Enhance Your BMW's Performance with the K&N 33-2005 Air Filter

Unlock the potential of your BMW with the K&N 33-2005 Drop-In Air Filter. Engineered for a wide range of BMW models from the mid-70s to mid-80s, this high-performance air filter is designed to deliver superior airflow and exceptional filtration. By allowing more air into your engine, the 33-2005 can contribute to increased horsepower and improved throttle response, giving your classic BMW a noticeable performance boost.

Why Choose the K&N 33-2005?

  • Increased Airflow: Features K&N's signature oiled cotton gauze media, which allows for significantly more air to pass through compared to standard paper filters.
  • Engine Protection: Effectively captures up to 99% of airborne contaminants, safeguarding your engine from damaging particles.
  • Washable & Reusable: This filter is designed to be washed and reused, offering a cost-effective and environmentally friendly solution for the life of your vehicle.
  • Easy Installation: As a direct drop-in replacement, the 33-2005 fits seamlessly into your BMW's factory air box, requiring no special tools or modifications.
  • Built to Last: Constructed with durable materials to ensure longevity and consistent performance.
  • Backed by Warranty: Comes with K&N's 10-Year/Million Mile Limited Warranty for your confidence.

This K&N air filter is compatible with various BMW models including the 3.0Si, 318i, 320i, 325e, 528e, 528i, and 633CSi from model years 1975 through 1985. Give your BMW the clean, unrestricted airflow it deserves. Trust K&N Engineering for quality and performance.

Upgrade your BMW's air intake system with the K&N 33-2005 Drop-In Air Filter and feel the difference. Order yours today!

Vehicle Fitment

Years Make Model Trim
1975-1976 BMW 3.0Si Base
1984-1985 BMW 318i Base
1980-1983 BMW 320i Base
1984-1985 BMW 325e Base
1982-1985 BMW 528e Base
1979-1981 BMW 528i Base
1977-1978 BMW 530i Base
1983-1984 BMW 533i Base
1985-1987 BMW 535i Base
1988 BMW 535is Base
1978-1984 BMW 633CSi Base
1985-1989 BMW 635CSi Base
1978-1984 BMW 733i Base
1985-1987 BMW 735i Base
1987 BMW L6 Base
1986-1987 BMW L7 Base
1988-1991 BMW M3 Base
1990-1992 Yugo Cabrio Base

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