• K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
  • K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3
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K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3

K&N 33-2005 Performance Air Filter for 77-87 BMW 528i / 78-90 635CSi / 86-92 M3

33-2005

In stock

$82.74 USD
$83.99 USD $82.74 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The K&N Replacement Air Filter for BMW F/I cars from 1978 to 1991 is a high-performance, washable, and reusable air filter designed to enhance engine airflow and increase horsepower. Constructed with layered, oiled cotton media, this filter efficiently captures contaminants while allowing superior airflow compared to standard filters. Engineered for durability, it is built to last the lifetime of the vehicle and is backed by K&N’s 10-Year/Million Mile Limited Warranty. The filter’s advanced design ensures improved engine performance and longevity, making it a reliable upgrade for enthusiasts seeking enhanced power and filtration.

This air filter is specifically designed as a direct replacement for factory air boxes on BMW fuel-injected models produced between 1978 and 1991. Its drop-in installation requires no modifications, making it suitable for street and daily driving applications. The filter fits seamlessly into the original air intake system, maintaining factory fitment and function. Ideal for drivers looking to improve engine efficiency and performance without compromising reliability, this K&N filter offers a straightforward upgrade with long-term benefits.

Overview

K&N Engineering Replacement Air Filter

Fits BMW Fuel Injected Cars 1978–1991

Part #: 33-2005

Overview

The K&N Replacement Air Filter is a high-performance, washable, and reusable air filter designed specifically for BMW fuel-injected cars from 1978 to 1991. Engineered to enhance airflow while effectively capturing contaminants, this filter supports improved engine efficiency and durability. Ideal for BMW owners seeking a reliable upgrade to their factory air filtration system, it offers a balance of performance and longevity.

Built to last the lifetime of your vehicle, this air filter helps maintain optimal engine performance by allowing superior airflow compared to standard paper filters. Its reusable design reduces maintenance costs and environmental impact, making it a practical choice for enthusiasts and daily drivers alike.

Key Features

This replacement air filter combines advanced materials and thoughtful design to deliver consistent performance benefits:

  • Layered, oiled cotton media engineered for high airflow and effective contaminant capture
  • Washable and reusable construction for long-term use and cost savings
  • Designed as a direct drop-in replacement for easy installation into the factory air box
  • Durable design intended to last the entire lifespan of your vehicle
  • Backed by K&N’s 10-Year/Million Mile Limited Warranty for added peace of mind

Installation & Fitment

The filter is designed to fit seamlessly into the original equipment air box of BMW fuel-injected models produced between 1978 and 1991. Its drop-in design allows for straightforward installation without modifications, making it a convenient upgrade for maintaining or improving your vehicle’s air intake system.

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