K&N 63-9023 High-Flow Air Intake System for 2003-2008 Toyota 4Runner 4.0L V6

Vehicle Fitment

• 2003-2008 Toyota 4Runner (All trims, 4.0L V6 Gas)

Features

• Guaranteed increase in horsepower and torque
• High-density polyethylene (HDPE) roto-molded intake tube
• Oversized oiled cotton High-Flow Air Filter™
• Washable and reusable filter with up to 100,000 miles between cleanings under normal highway driving conditions
• Custom heat shield protects intake air from engine heat
• Easy installation with simple hand tools in approximately 60 minutes
• No-hassle Lifetime Limited Warranty™
• Will not void vehicle warranty

Specifications

• Estimated Horsepower Gain: 9.23 HP @ 5388 RPM
• Estimated Torque Gain: 9 lb-ft
• Air Filter Color: Red
• Air Filter Material: Cotton Gauze
• Air Filter Outlet Shape: Round
• Clamps Included: 4 (Stainless Steel, Regular Style)
• Couplers Included: 1
• Replacement Filter: RU-5100
• Intake Pipe Material: High-Density Cross-Linked Polyethylene
• Intake Pipe Color/Finish: Black

Included Components

• 1x High-Flow Air Filter™
• 1x Roto-molded HDPE Intake Tube
• 4x Stainless Steel Clamps
• 1x Coupler
• 1x Custom Heat Shield
• 1x Installation Hardware Kit
• 1x Installation Instructions

Product Description

The K&N 63-9023 High-Flow Air Intake System is designed to replace the restrictive factory air intake system in 2003-2008 Toyota 4Runner models equipped with the 4.0L V6 engine. By increasing airflow to the engine, this system delivers a guaranteed increase in horsepower and torque, enhancing acceleration and overall engine performance.

Featuring a high-density polyethylene (HDPE) roto-molded intake tube and an oversized oiled cotton High-Flow Air Filter™, the 63-9023 ensures exceptional filtration and durability. The washable and reusable filter can go up to 100,000 miles between cleanings under normal highway driving conditions, making maintenance convenient and cost-effective.

Installation is straightforward and can typically be completed in about 60 minutes using simple hand tools. The system includes all necessary components, such as a custom heat shield to protect intake air from engine heat, and is backed by K&N's No-Hassle Lifetime Limited Warranty™, ensuring long-lasting performance and peace of mind.