Cold Air Intake for Honda Accord 2.4L (2003–2006) - Non-MAF Models Only

This cold air intake system is designed to replace the factory air box on 2003–2006 Honda Accord models equipped with the 2.4L 4-cylinder engine without Mass Airflow Sensor. The system reduces intake restriction by using T-306 aluminum intake piping and a high-flow air filter. This results in improved throttle response, enhanced airflow efficiency, and measurable gains in horsepower and torque across the RPM range.

The intake uses larger diameter aluminum tubing compared to the factory intake tract, creating a less restrictive path for incoming air. The design improves air-to-fuel ratio efficiency while the high-flow filter maintains adequate filtration. The system includes all necessary mounting hardware, vacuum hoses, and reducers for complete installation.

Vehicle Fitment

• 2003–2006 Honda Accord (2.4L 4-Cylinder Engine without MAF Sensor)
• Compatible with automatic and manual transmissions
• Not compatible with Mass Airflow Sensor equipped engines
• Excludes Accord SULEV LEV2 engine families: 3HNXV02.4KCP, 4HNXV02.4KCV, 5HNXV02.4ECV, 6HNXV02.4CMC

Performance & Design

Airflow Optimization: The system is engineered to improve airflow efficiency by eliminating restrictive elements in the factory air box assembly. The T-306 aluminum piping provides a smoother, less restricted path for incoming air compared to factory components. Actual performance improvements will vary based on vehicle condition, elevation, ambient temperature, and existing modifications.

Throttle Response: The reduced intake restriction allows the engine to draw air more efficiently during acceleration. This results in improved throttle response and power delivery throughout the RPM range. The system is designed specifically for non-MAF sensor equipped engines.

Construction & Materials

T-306 Aluminum Construction: The intake pipe is constructed from T-306 aluminum with a quality finish. The aluminum construction provides corrosion resistance and reduces weight compared to factory plastic components. The material maintains structural integrity across engine bay temperature ranges.

Filter Design: The high-flow air filter uses washable and reusable filter media. The filter provides adequate filtration while maintaining lower restriction than factory paper elements. The filter can be cleaned, re-oiled, and reused, eliminating the need for replacement filters during routine maintenance.

Features & Components

• T-306 aluminum intake piping with quality finish
• High-flow washable and reusable air filter
• Direct replacement for factory air box assembly
• Designed for non-MAF sensor engines only
• Reduces intake restriction for improved airflow
• Enhances throttle response across RPM range
• Reusable filter reduces long-term maintenance costs
• Includes all necessary mounting hardware
• Includes vacuum hoses and reducers

What's Included

• T-306 aluminum intake pipe
• High-flow washable air filter
• Complete mounting hardware
• Vacuum hoses
• Reducers and couplers

Installation

• Direct replacement for factory air box system
• Uses existing factory mounting points
• No cutting or drilling required
• Installation time approximately 45–60 minutes
• Basic hand tools required (screwdrivers, socket wrenches)

Installation Note:
After installation, disconnect the negative battery terminal for approximately 30 seconds to allow the engine control unit to reset. This allows the ECU to recalibrate fuel delivery and ignition timing parameters to optimize performance with the modified airflow characteristics. Always disconnect the battery before performing any engine bay work. The ECU will continue to adapt during normal driving operation.

Filter Maintenance

Inspection Schedule: Inspect the air filter every 5,000 miles and clean if necessary. Driving conditions such as dusty environments, urban traffic, or spirited driving may require more frequent inspection and cleaning.

Cleaning Procedure: Remove the filter from the intake tube. Gently tap the filter to remove loose debris. Apply an appropriate air filter cleaning solution to both the inside and outside of the filter element, working it into the filter media. Allow the cleaner to soak for approximately 10 minutes. Rinse the filter thoroughly with low-pressure water from the clean side out, continuing until water runs clear. Shake off excess water and allow the filter to air dry completely in a clean environment. Once fully dry, apply air filter oil evenly to the filter media according to product specifications. Allow the oil to wick through the filter material for approximately 20 minutes before reinstalling. Ensure the filter is completely dry before applying oil, as moisture will prevent proper oil absorption.

Compatibility Requirements

Engine Verification: This cold air intake system is designed specifically for 2003–2006 Honda Accord models equipped with the 2.4L 4-cylinder engine WITHOUT Mass Airflow Sensor. This intake is NOT compatible with engines equipped with MAF sensors or MAF sensor adapters. The system also excludes Accord SULEV LEV2 models with engine families 3HNXV02.4KCP, 4HNXV02.4KCV, 5HNXV02.4ECV, and 6HNXV02.4CMC. Verify your vehicle does not have a MAF sensor and is not a SULEV LEV2 model before purchase to ensure proper fitment and operation.

This cold air intake system provides improved airflow characteristics for 2.4L non-MAF sensor equipped Accord engines while maintaining reliable filtration through a washable, reusable filter element. The T-306 aluminum construction provides durability and corrosion resistance. The complete hardware kit includes all necessary components including vacuum hoses and reducers for proper installation. The system is designed to work with factory engine management components on non-MAF sensor equipped models without requiring additional modifications or tuning.