K&N Replacement Air Filter — BMW 318i/318is/325i/325is/525i/528e 1986-1991

SKU: KNN33-2059
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Sale price$54.99
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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.

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K&N High-Flow Replacement Air Filter for BMW Models

Revitalize your BMW's engine with the K&N 33-2059 High-Flow Replacement Air Filter. This premium filter is designed to fit a range of BMW models from 1986 to 1991, including the 318i, 318is, 325, 325e, 325es, 325i, 325is, 325ix, 528e, and 750il. Engineered with K&N's signature layered, oiled cotton media, this filter ensures superior filtration while maximizing airflow to your engine.

Why Choose K&N?

  • Improved Performance: Experience a noticeable increase in horsepower and acceleration due to enhanced air intake.
  • Exceptional Filtration: The oiled cotton gauze traps harmful particles, protecting your engine.
  • Washable and Reusable: A sustainable choice that saves you money over time. Clean and re-oil for continued use.
  • Long-Lasting Durability: Built to endure for the entire lifespan of your vehicle.
  • Direct Fit Installation: Designed to seamlessly replace your stock air filter in the factory air box.
  • Guaranteed Protection: Comes with K&N's 10-Year/Million Mile Limited Warranty.

The K&N 33-2059 is more than just a replacement part; it's an investment in your BMW's performance and longevity. Its high-flow design allows your engine to breathe easier, leading to better throttle response and overall efficiency. Easy to install and built to last, this filter offers a cost-effective and performance-driven solution for your BMW maintenance needs. Get yours today at GGCRACING and feel the difference.

Vehicle Fitment

Years Make Model Trim
1991-1994 BMW 318i Base
1991-1994 BMW 318is Base
1986-1988 BMW 325 Base
1986-1987 BMW 325e Base
1986-1987 BMW 325es Base
1987-1991 BMW 325i Base
1988-1991 BMW 325iX Base
1987-1991 BMW 325is Base
1989-1991 BMW 525i Base
1986-1988 BMW 528e Base
1994-1995 BMW 850CSi Base
1993-1997 BMW 850Ci Base
1991-1992 BMW 850i 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.

Watch in action

K&N High-Flow Replacement Air Filter for BMW Models

Revitalize your BMW's engine with the K&N 33-2059 High-Flow Replacement Air Filter. This premium filter is designed to fit a range of BMW models from 1986 to 1991, including the 318i, 318is, 325, 325e, 325es, 325i, 325is, 325ix, 528e, and 750il. Engineered with K&N's signature layered, oiled cotton media, this filter ensures superior filtration while maximizing airflow to your engine.

Why Choose K&N?

  • Improved Performance: Experience a noticeable increase in horsepower and acceleration due to enhanced air intake.
  • Exceptional Filtration: The oiled cotton gauze traps harmful particles, protecting your engine.
  • Washable and Reusable: A sustainable choice that saves you money over time. Clean and re-oil for continued use.
  • Long-Lasting Durability: Built to endure for the entire lifespan of your vehicle.
  • Direct Fit Installation: Designed to seamlessly replace your stock air filter in the factory air box.
  • Guaranteed Protection: Comes with K&N's 10-Year/Million Mile Limited Warranty.

The K&N 33-2059 is more than just a replacement part; it's an investment in your BMW's performance and longevity. Its high-flow design allows your engine to breathe easier, leading to better throttle response and overall efficiency. Easy to install and built to last, this filter offers a cost-effective and performance-driven solution for your BMW maintenance needs. Get yours today at GGCRACING and feel the difference.

Vehicle Fitment

Years Make Model Trim
1991-1994 BMW 318i Base
1991-1994 BMW 318is Base
1986-1988 BMW 325 Base
1986-1987 BMW 325e Base
1986-1987 BMW 325es Base
1987-1991 BMW 325i Base
1988-1991 BMW 325iX Base
1987-1991 BMW 325is Base
1989-1991 BMW 525i Base
1986-1988 BMW 528e Base
1994-1995 BMW 850CSi Base
1993-1997 BMW 850Ci Base
1991-1992 BMW 850i 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.

Watch in action

K&N High-Flow Replacement Air Filter for BMW Models

Revitalize your BMW's engine with the K&N 33-2059 High-Flow Replacement Air Filter. This premium filter is designed to fit a range of BMW models from 1986 to 1991, including the 318i, 318is, 325, 325e, 325es, 325i, 325is, 325ix, 528e, and 750il. Engineered with K&N's signature layered, oiled cotton media, this filter ensures superior filtration while maximizing airflow to your engine.

Why Choose K&N?

  • Improved Performance: Experience a noticeable increase in horsepower and acceleration due to enhanced air intake.
  • Exceptional Filtration: The oiled cotton gauze traps harmful particles, protecting your engine.
  • Washable and Reusable: A sustainable choice that saves you money over time. Clean and re-oil for continued use.
  • Long-Lasting Durability: Built to endure for the entire lifespan of your vehicle.
  • Direct Fit Installation: Designed to seamlessly replace your stock air filter in the factory air box.
  • Guaranteed Protection: Comes with K&N's 10-Year/Million Mile Limited Warranty.

The K&N 33-2059 is more than just a replacement part; it's an investment in your BMW's performance and longevity. Its high-flow design allows your engine to breathe easier, leading to better throttle response and overall efficiency. Easy to install and built to last, this filter offers a cost-effective and performance-driven solution for your BMW maintenance needs. Get yours today at GGCRACING and feel the difference.

Vehicle Fitment

Years Make Model Trim
1991-1994 BMW 318i Base
1991-1994 BMW 318is Base
1986-1988 BMW 325 Base
1986-1987 BMW 325e Base
1986-1987 BMW 325es Base
1987-1991 BMW 325i Base
1988-1991 BMW 325iX Base
1987-1991 BMW 325is Base
1989-1991 BMW 525i Base
1986-1988 BMW 528e Base
1994-1995 BMW 850CSi Base
1993-1997 BMW 850Ci Base
1991-1992 BMW 850i Base

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