K&N 77 Series High-Flow Performance Intake
Maximize the output and engine bay aesthetics of your late-model 4th Gen 4Runner with the K&N 77 Series High-Flow Performance Intake. Engineered specifically for the VVTi-equipped 4.7L V8, the 77-9023KP replaces the restrictive factory air box and rubber intake plumbing with a premium, mandrel-bent aluminum induction path. By smoothing and straightening the airflow, this system allows your 2UZ-FE engine to breathe more efficiently, resulting in a guaranteed increase in horsepower and significantly sharper throttle response.
Performance Engineering for the VVTi 4.7L V8
- Mandrel-Bent Aluminum Tubing: Features a high-quality aluminum intake tube that is mandrel-bent to maintain a constant diameter. This design eliminates power-robbing turbulence and restriction, ensuring a rapid, high-velocity air charge to the throttle body.
- Premium Polished Finish: Designed for enthusiasts who value both form and function, the tube features a high-luster, chrome-like finish that provides a "show-car" look under the hood while resisting corrosion.
- Thermal Protection: Includes a custom-fit heat shield that installs into the original air box space, effectively blocking radiant engine heat to ensure your v8 pulls the coolest, densest air possible.
- Full Component Integration: The intake tube is precision-machined to accommodate the factory mass air sensor (MAF) and crankcase vent hose. It also includes a replacement silicone fuel pressure regulator vacuum hose for a secure, factory-style fit.
Key Features
- Measured Power Gains: Dyno-tested to provide a substantial estimated increase of 7.89 HP @ 5189 RPM, delivering the extra grunt needed for highway merging, towing, or technical off-road.
- Washable High-Flow Filter: Equipped with an oversized, chrome-topped conical filter (RF-1048) that can go up to 100,000 miles before its first cleaning (under normal driving conditions)
- Deep V8 Engine Tone: Enhances the natural sound of the i-Force V8, giving it a deep, aggressive growl under acceleration while remaining refined at cruising speeds
- Simple Installation: Designed to mount directly to existing factory points-usually completed in 90 minutes or less with basic hand tools like a screwdriver, pliers, a ratchet set, and Allen wrenches.
- Million-Mile Protection: Backed by K&N's legendary 1,000,000 mile Limited Warranty.
Technical Specifications
- Part Number: 77-9023KP
- System Type: 77 Series Metal Intake
- Intake Pipe Material: Polished Aluminum
- Replacement Filter: RF-1048 (Red Cotton Gauze)
- Horsepower Gain: 7.89 HP @ 5189 RPM
- Filter Height: 6.0 in (152 mm)
- Weight: 11.9 lbs
- Warranty: 1,000,000 Miles / 10-Year Limited
| Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501. |
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- 2003-2008 1GR 4.0L 4Runner Engines
