K&N 77-2581KP Engine Cold Air Intake Performance Kit

Performance Intake Overview

The K&N 77-2581KP is a cold air intake performance kit built for the Ford F-150. It uses a mandrel-bent aluminum intake tube, a washable cotton gauze filter, and a heat shield or air box to help isolate incoming air from engine-bay heat.

This 77 Series kit is engineered for street use and is CARB EO D-269-48 exempt for the listed application. The K&N 77-2581KP is a direct-fit performance intake for drivers looking to improve airflow while keeping service intervals practical.

Key Features

• Polished aluminum intake tube for smooth airflow routing
• Washable, reusable oiled cotton gauze air filter
• Oversized conical filter design for extended service intervals under normal highway driving
• Stainless steel clamps and included coupler for a secure installation
• Mass air flow sensor adapter included when required for the application
• Street legal in all U.S. states for the listed fitment

Detailed Description

Designed as part of K&N’s 77 Series kits, the 77-2581KP combines a polished aluminum intake pipe with a red cotton gauze filter and application-specific intake tube ports. The filter is pre-oiled and washable, and the system is built to support improved airflow with a claimed horsepower increase of up to 10 HP at 5508 RPM. For buyers searching for a Ford F-150 cold air intake kit, this part number provides a fitment-specific solution with CARB EO D-269-48 approval for the listed vehicle.

This part number, 77-2581KP, is also identified as a performance air intake system for the 2011-2014 Ford F-150. If you are comparing K&N intake options for a Ford F-150, the 77-2581KP is the application-specific 77 Series metal intake kit listed here.

What It Helps Address

• Restricted intake airflow from a factory-style intake setup
• Need for a reusable air filter serviceable over time
• Heat soak concerns from underhood air temperatures
• Desire for a bolt-on intake upgrade with application-specific components
• Searches for a CARB-exempt Ford F-150 intake solution

Installation Notes and Tips

Installation is typically completed in less than 90 minutes, depending on the vehicle and workspace. The kit includes the intake tube ports needed for the specified applications, and the mass air flow sensor adapter is included when required. Verify CARB status before installation if your vehicle is subject to emissions regulations.

Quality Assurance

K&N backs this intake with a 1,000,000-mile/10-year warranty. The washable filter media, stainless steel clamps, and application-specific design reflect the brand’s focus on reusable performance intake components.