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K&N 77 Series Intake 2001-2007 4.0L Ford Ranger


Quick Overview

Add power and get better gas mileage with a 77 series intake for your 4.0L Ford Ranger

Sku # : KN_77_Series_4L_MW
Intake Model

Are you looking to add power to your Ford Ranger but don't want to spend a large amount of money? The solution is here, The K&N 77 Series High-Flow Performance Kit will add power to your truck as well as boosting your gas mileage. The intake is a free-flow mandrel-bent aluminum tube induction system specifically designed to give your Ranger more power throughout the RPM range.  The 77 Series intake has a polished aluminum finish designed to perform and look good under your hood. Like all K&N intakes the filter is reusable and comes with a limited 1,000,000 mile warranty.

77 Series Benefits

  • More horsepower and torque throughout the RPM range
  • Improved fuel economy
  • Washable filter
  • Deepened exhaust and engine tone
  • Customized look under your hood

Dyno Chart 2005 Ford Ranger 4.0L - 11.24 Hp Gain

Dyno Chart 2001 Ford Ranger 4.0L - 5.32 Hp Gain


Car Fitments Model Estimated Horsepower Gain Replacement Filter Weight Length Width Height   
2004-2007 Ford Ranger 4.0L V6 77-2561KP 11.24 HP @ 4950 RPM RF-1048 9.3 Lbs. 23 in. 14.38 in. 12.25in.
2001-2003 Ford Ranger 4.0L V6 77-2529KP 5.32 HP @ 5059 RPM RF-1048 10.9 Lbs. 23 in. 14.38 in. 12.25in.

(77-2561KP) Pictured


  • Installation is relatively easy, and requires no special tools  performance
  • Usually takes less than 90 minutes
  • Only takes one person to install

(77-2561) Install Guide

(77-2529) Install Guide

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