Cold Air Intake for Toyota Tundra Sequoia 2000-2004 4.7L Engine

Cold Air Intake System for Toyota Sequoia / Tundra 4.7L V8 (2000–2004) - Maximum Airflow & Power Gains

This cold air intake system is designed to replace the factory air box on 2000–2004 Toyota Tundra and 2001–2004 Toyota Sequoia models equipped with the 4.7L 2UZ-FE V8 engine. The system reduces intake restriction by using polished aluminum intake piping and a high-flow open-element air filter, allowing increased air volume to reach the engine. 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 open-element filter design eliminates the factory air box enclosure, allowing the engine to draw cooler, denser air for improved combustion efficiency. The design improves air-to-fuel ratio efficiency while maintaining adequate filtration.

Vehicle Fitment

• 2001–2004 Toyota Sequoia SR5 (4.7L V8 2UZ-FE)
• 2001–2004 Toyota Sequoia Limited (4.7L V8 2UZ-FE)
• 2000–2004 Toyota Tundra SR5 (4.7L V8 2UZ-FE)
• 2000–2004 Toyota Tundra Limited (4.7L V8 2UZ-FE)
• 2000–2004 Toyota Tundra Access Cab (4.7L V8 2UZ-FE)
• 2000–2004 Toyota Tundra Double Cab (4.7L V8 2UZ-FE)
• Factory horsepower: 240 HP / 315 lb-ft torque

Performance & Design

Airflow Optimization: The system is engineered to improve airflow efficiency by eliminating the restrictive factory air box and narrow intake tubing. Testing under controlled conditions has shown potential gains of 8–14% in horsepower and torque. Performance gains of approximately 8% can be achieved with the intake system alone, while gains approaching 14% may be possible when combined with engine tuning. Actual performance improvements will vary based on vehicle condition, elevation, ambient temperature, and existing modifications.

Throttle Response: The reduced intake restriction and increased airflow volume allow the engine to respond more efficiently during acceleration, merging, and towing conditions. This results in improved throttle response and power delivery throughout the RPM range. The improved combustion efficiency may contribute to fuel economy gains during highway cruising and steady-state driving conditions.

Construction & Materials

Polished Aluminum Construction: The intake tube is constructed from polished aluminum, which provides corrosion resistance and reduces weight compared to factory plastic components. The aluminum construction dissipates heat more efficiently than factory materials, helping to maintain cooler intake air temperatures. The polished finish resists corrosion from moisture and road salt exposure.

Filter Design: The high-flow air filter uses oiled cotton filter media that can be cleaned and re-oiled for continued use. The filter provides adequate filtration while maintaining lower restriction than factory paper elements. The open-element design produces a more audible intake sound during acceleration. The filter is compatible with standard air filter cleaning kits.

Features & Components

• Polished aluminum intake piping
• High-flow washable oiled cotton air filter
• Open-element design for maximum airflow
• Direct replacement for factory air box assembly
• Pre-formed intake piping for direct fitment
• Silicone couplers for connection points
• Stainless steel clamps for secure mounting
• Reduces intake restriction for improved airflow
• Enhances throttle response across RPM range
• Produces deeper intake sound under acceleration
• Improved heat dissipation versus factory plastic components
• Reusable filter with cleaning and re-oiling capability

What's Included

• Polished aluminum intake tube (pre-formed)
• High-flow washable air filter
• Silicone couplers
• Stainless steel clamps
• Mounting brackets and hardware kit
• Installation instructions

Installation

• Direct replacement for factory air intake system
• Uses existing factory mounting locations
• No cutting or drilling required
• Installation time approximately 45–60 minutes
• Basic hand tools required (screwdrivers, socket wrenches)
• Reversible to stock configuration if needed
• Engine must be completely cool before beginning work

Installation Note:
Disconnect the negative battery cable before beginning installation. After installation is complete, leave the battery disconnected for at least one minute to allow the engine control unit to reset and adapt to the modified airflow characteristics. This allows the ECU to recalibrate fuel delivery and ignition timing parameters. Ensure the engine is completely cool before performing any engine bay work.

Filter Maintenance

Inspection Schedule: Inspect the air filter every 5,000 miles and clean if necessary. Towing, off-road use, dusty environments, or heavy traffic 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 (compatible with oiled cotton filters) 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. Filter cleaning kit sold separately.

Performance Expectations

Power Gains: Testing has shown potential horsepower increases from the factory rating of 240 HP to approximately 259 HP (8% gain) with the intake system alone. When combined with engine tuning, gains may approach 274 HP (14% gain). Torque gains follow a similar pattern, with increases from the factory 315 lb-ft to approximately 340 lb-ft (8% gain) or up to 359 lb-ft (14% gain) with tuning. These figures represent controlled testing conditions and actual results will vary based on vehicle condition and modifications.

This cold air intake system provides improved airflow characteristics for the 4.7L 2UZ-FE V8 engine while maintaining reliable filtration through a washable, reusable filter element. The polished aluminum construction reduces weight and improves heat dissipation compared to factory plastic components. The system is designed to work with factory engine management components and is reversible to stock configuration without permanent modifications.