K&N 77 Series High-Flow Performance Intake | 2007-2011 Tundra & Sequoia

K&N 77 Series High-Flow Performance Intake

Unlock the massive potential of your i-Force V8 with the K&N 77 Series High-Flow Performance Intake. Engineered specifically for the 3UR-FE 5.7L engine, the 77-9031-1KP replaces the restrictive factory air box and baffled intake tract with a premium, mandrel-bent aluminum induction path. By smoothing the airflow and increasing the volume of oxygen reaching the cylinders, this system allows your engine to breathe without restriction, resulting in guaranteed increase in horsepower and significantly sharper throttle response.

Performance Engineering for the 5.7L V8

• High-Volume Induction: Features a mandrel-bent aluminum intake tube designed to maintain a constant diameter. This eliminates the power-robbing turbulence found in factory corrugated hoses, ensuring a high-velocity air charge reaches 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 while resisting corrosion in harsh engine bay environments.
• Thermal Isolation: Includes a vehicle-specific 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), fuel pressure vent hose, and crankcase vent hose for a secure, factory-style fit.

Key Features

• Significant Power Gains: Dyno-tested to provide a substantial increase of 13.43 HP @ 5142 RPM, delivering the extra grunt needed for highway merging, heavy towing, or hauling overland gear.
• Washable High-Flow Filter: Equipped with an oversized, chrome-topped conical filter (RF-1042) that can go up to 100,000 miles before its first cleaning (under normal driving conditions).
• Deep V8 Engine Tone: Noticeably enhances the sound of 4.7L engine, providing a deep, performance-oriented 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, ratchet set and wrenches.
• Million-Mile Protection: Backed by K&N's legendary 1,000,000 Mile Limited Warranty.

Technical Specifications

• Part Number: 77-9031-1KP
• System Type: 77 Series Metal Intake
• Intake Pipe Material: Polished Aluminum
• Replacement Filter: RF-1042 (Red Cotton Gauze)
• Horsepower Gain: 13.43 hp @ 5142 RPM
• Filter Height: 6.5 in (165 mm)
• Weight: 14.1 lbs
• Warranty: 1,000,000 Miles / 10-Year Limited

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