K&N 33-2004 Drop-In Air Filter for Porsche 911 (1974-1983)

SKU: KNN33-2004
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Sale price$149.99
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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.

Upgrade Your Porsche 911's Air Intake with a K&N 33-2004 High-Flow Air Filter

Experience a noticeable increase in horsepower and acceleration with the K&N 33-2004 Drop-In Air Filter, specifically designed for your Porsche 911. This premium air filter utilizes K&N's renowned High-Flow Filtration Technology™, featuring a state-of-the-art design with layered, oiled cotton media. This advanced construction is engineered to maximize airflow while effectively capturing contaminants, ensuring your engine receives clean, cool air for optimal performance.

Key Features and Benefits:

  • Enhanced Performance: Designed to increase horsepower and improve acceleration by allowing more air into the engine.
  • Superior Filtration: Captures up to 99% of harmful contaminants, protecting your engine from wear and tear.
  • Washable and Reusable: This filter is washable and reusable, saving you money and reducing waste over its lifespan. With proper cleaning, it can last for the life of your vehicle.
  • Direct Fit Replacement: Engineered to install easily into your factory air box, making it a simple and effective upgrade. No modifications are required.
  • Durable Construction: Built with a robust design to withstand the demands of daily driving and performance use.
  • K&N 10-Year/Million Mile Limited Warranty: Backed by K&N's industry-leading warranty for peace of mind.

This K&N 33-2004 air filter is a direct replacement for your stock filter and is compatible with various Porsche 911 models from 1974 to 1983, including Base, S, SC, and Turbo Carrera submodels. Ensure your classic Porsche breathes easy and performs at its best. Choose K&N for proven performance and reliability.

Invest in superior airflow and lasting performance for your Porsche 911. Get your K&N 33-2004 Drop-In Air Filter today!

Vehicle Fitment

Years Make Model Trim
1974 Porsche 911 Base
1974-1977 Porsche 911 S
1976-1977 Porsche 911 Turbo Carrera
1978-1983 Porsche 911 SC

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.

Upgrade Your Porsche 911's Air Intake with a K&N 33-2004 High-Flow Air Filter

Experience a noticeable increase in horsepower and acceleration with the K&N 33-2004 Drop-In Air Filter, specifically designed for your Porsche 911. This premium air filter utilizes K&N's renowned High-Flow Filtration Technology™, featuring a state-of-the-art design with layered, oiled cotton media. This advanced construction is engineered to maximize airflow while effectively capturing contaminants, ensuring your engine receives clean, cool air for optimal performance.

Key Features and Benefits:

  • Enhanced Performance: Designed to increase horsepower and improve acceleration by allowing more air into the engine.
  • Superior Filtration: Captures up to 99% of harmful contaminants, protecting your engine from wear and tear.
  • Washable and Reusable: This filter is washable and reusable, saving you money and reducing waste over its lifespan. With proper cleaning, it can last for the life of your vehicle.
  • Direct Fit Replacement: Engineered to install easily into your factory air box, making it a simple and effective upgrade. No modifications are required.
  • Durable Construction: Built with a robust design to withstand the demands of daily driving and performance use.
  • K&N 10-Year/Million Mile Limited Warranty: Backed by K&N's industry-leading warranty for peace of mind.

This K&N 33-2004 air filter is a direct replacement for your stock filter and is compatible with various Porsche 911 models from 1974 to 1983, including Base, S, SC, and Turbo Carrera submodels. Ensure your classic Porsche breathes easy and performs at its best. Choose K&N for proven performance and reliability.

Invest in superior airflow and lasting performance for your Porsche 911. Get your K&N 33-2004 Drop-In Air Filter today!

Vehicle Fitment

Years Make Model Trim
1974 Porsche 911 Base
1974-1977 Porsche 911 S
1976-1977 Porsche 911 Turbo Carrera
1978-1983 Porsche 911 SC

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.

Upgrade Your Porsche 911's Air Intake with a K&N 33-2004 High-Flow Air Filter

Experience a noticeable increase in horsepower and acceleration with the K&N 33-2004 Drop-In Air Filter, specifically designed for your Porsche 911. This premium air filter utilizes K&N's renowned High-Flow Filtration Technology™, featuring a state-of-the-art design with layered, oiled cotton media. This advanced construction is engineered to maximize airflow while effectively capturing contaminants, ensuring your engine receives clean, cool air for optimal performance.

Key Features and Benefits:

  • Enhanced Performance: Designed to increase horsepower and improve acceleration by allowing more air into the engine.
  • Superior Filtration: Captures up to 99% of harmful contaminants, protecting your engine from wear and tear.
  • Washable and Reusable: This filter is washable and reusable, saving you money and reducing waste over its lifespan. With proper cleaning, it can last for the life of your vehicle.
  • Direct Fit Replacement: Engineered to install easily into your factory air box, making it a simple and effective upgrade. No modifications are required.
  • Durable Construction: Built with a robust design to withstand the demands of daily driving and performance use.
  • K&N 10-Year/Million Mile Limited Warranty: Backed by K&N's industry-leading warranty for peace of mind.

This K&N 33-2004 air filter is a direct replacement for your stock filter and is compatible with various Porsche 911 models from 1974 to 1983, including Base, S, SC, and Turbo Carrera submodels. Ensure your classic Porsche breathes easy and performs at its best. Choose K&N for proven performance and reliability.

Invest in superior airflow and lasting performance for your Porsche 911. Get your K&N 33-2004 Drop-In Air Filter today!

Vehicle Fitment

Years Make Model Trim
1974 Porsche 911 Base
1974-1977 Porsche 911 S
1976-1977 Porsche 911 Turbo Carrera
1978-1983 Porsche 911 SC

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