K&N 57-1003 Cold Air Intake System for 2001-2005 BMW M3 3.2L I6

Vehicle Fitment

• 2001-2005 BMW M3 (E46) 3.2L I6

Features

• Guaranteed increase in horsepower and torque
• High-density polyethylene (HDPE) rotationally-molded intake tube
• Oversized washable and reusable High-Flow Air Filter™
• Custom heat shield protects intake air from engine heat
• Easy installation in 90 minutes or less with basic hand tools
• Street legal in all 50 U.S. states
• No-hassle lifetime limited warranty
• Will not void vehicle warranty

Specifications

• Estimated horsepower gain: +26 HP @ 5000 RPM
• Estimated torque gain: +19 lb-ft
• Tube material: High-density polyethylene (HDPE)
• Filter material: Oiled cotton gauze
• Filter color: Red
• Clamp material: Stainless steel
• Clamp color: Natural
• Coupler color: Black
• Tube color: Black
• Washable/reusable filter: Yes
• Filter service interval: Up to 100,000 miles under normal highway driving conditions
• Mounting hardware included: Yes

Included Components

• 1x High-Flow Air Filter™
• 1x Rotationally-molded HDPE intake tube
• 1x Custom heat shield
• 4x Stainless steel hose clamps
• 1x Silicone coupler
• 1x Crankcase vent hose (if applicable)
• 1x Installation hardware kit
• 1x Installation instructions

Product Description

The K&N 57-1003 Performance Air Intake System is designed to replace the restrictive factory air intake system in your 2001-2005 BMW M3 with a 3.2L I6 engine. This high-performance intake system features a high-density polyethylene (HDPE) rotationally-molded intake tube and an oversized washable and reusable High-Flow Air Filter™. Together, they provide a guaranteed increase in horsepower and torque, enhancing your vehicle's performance and throttle response.

The custom heat shield included in the system protects the intake air from the high temperatures of the engine bay, ensuring cooler, denser air enters the engine for improved combustion efficiency. Installation is straightforward, typically taking 90 minutes or less using basic hand tools and existing factory mounting points. The system is street legal in all 50 U.S. states and comes with a no-hassle lifetime limited warranty, ensuring long-term reliability and performance.

Whether you're looking to enhance your vehicle's acceleration, towing capabilities, or overall engine performance, the K&N 57-1003 Performance Air Intake System offers a proven solution. Its washable and reusable filter only requires cleaning every 100,000 miles under normal highway driving conditions, making it a cost-effective and eco-friendly choice for performance enthusiasts.