Cold Air Intake for Ford Ranger (2001-2003) 4.0L Engine - Red

$104.95

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Tired of your Ranger feeling a bit sluggish, like it’s holding its breath? This Cold Air Intake isn’t just an upgrade; it’s about letting your 4.0L breathe deep and truly stretch its legs on the road or trail.

Performance Cold Air Intake Kit for Ford Ranger (2001-2003) 4.0L V6 SOHC

The stock airbox on your 2001-2003 Ford Ranger with the 4.0L SOHC V6 is designed for quiet operation and cost-efficiency, not maximum airflow. It uses a restrictive paper filter and often pulls hot air from directly over the engine, which robs your truck of power and efficiency, especially when you’re trying to accelerate or climb a grade.

This high-flow Cold Air Intake kit directly addresses those limitations. By replacing the convoluted factory plumbing and restrictive filter with a smooth, wider-diameter intake tube and an oversized conical filter, it allows your engine to inhale a much greater volume of colder, denser air. This isn’t just about sound; it’s about giving your engine what it needs to produce more power and respond quicker.

Why You Need This Upgrade

Real-World Horsepower & Torque: You’ll feel a noticeable bump, especially in the mid-range. That 5-7% HP and 6-8% torque gain means less downshifting on the highway and more grunt for towing or passing.
Sharper Throttle Response: Remember that slight hesitation when you stomp on the gas? Cleaner, colder airflow gets rid of that, making your Ranger feel more eager and responsive. It’s like the engine finally wakes up.
Improved Fuel Efficiency: When an engine breathes easier and combusts fuel more completely, it doesn’t have to work as hard. Many of our customers report a slight but consistent improvement in MPGs.
Durable, Long-Lasting Design: Crafted from T-304 aluminum with a polished anodized finish, this intake is built to withstand engine bay heat and corrosion. The reusable, washable filter means you buy it once and maintain it for years.

Technical Specifications

Fitment	2001-2003 Ford Ranger (SOHC 4.0L V6 with MAF Sensor)
Factory Stats	Stock: 207 HP / 238 lb-ft
Part Numbers
Installation	Easy (1 Hour)

Replaces These OEM Applications

Compatible Vehicles:

2001 Ford Ranger 4.0L V6 (SOHC)
2002 Ford Ranger 4.0L V6 (SOHC)
2003 Ford Ranger 4.0L V6 (SOHC)

OEM Part Numbers / Cross Reference:

Upgrade Your Ford Ranger Today

Don’t let a restrictive factory airbox hold back your 4.0L V6 Ranger. Shop with confidence knowing that we deliver the best Cold Air Intake parts with fast shipping and expert support. Get ready to experience a more responsive throttle, better power delivery, and that satisfying intake growl every time you hit the gas.

Engine Safety Rating

Difficulty

Fitment

Make	Ford
Engine Size	4.0L
Year	2001 2002 2003

Installation & Tools

The Wrench Time for Your 2001-2003 Ford Ranger 4.0L

Estimated Time: 45-60 Minutes
Difficulty: 3/10 - A straightforward driveway bolt-on, but it requires delicate handling of the factory Mass Air Flow (MAF) sensor and some brittle 20-year-old plastic clips.

Tools You Will Need

10mm wrench or socket (For the battery terminal and factory airbox bolts)
8mm socket and ratchet (For worm-gear hose clamps)
T20 Security Torx bit (Crucial for removing the factory MAF sensor)
Flathead screwdriver (For gently prying harness retaining clips)
Panel popper tool (To cleanly remove the intake wiring tree from the factory box)

Mechanic’s Pro Tip (The "Gotcha"):
If you spend any time on the Ranger Station forums, you know the 4.0L SOHC has two massive headaches: the factory accordion-style intake tube tearing in the pleats (causing P0171 lean codes), and a hyper-sensitive MAF sensor. When you remove the PCV crankcase breather hose from the stock tube, do not force it. The plastic locking ring is completely brittle from two decades of heat cycling. Depress the locking tab fully and wiggle it off. Furthermore, treat the MAF sensor like a loaded weapon—dropping it will ruin the filament and cause immediate rough-idle issues.

Phase 1: Removing the Factory Part

Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench. This prevents accidental shorts and forces the ECU to reset its fuel trims for the new airflow.
Unplug the Sensors: Locate the MAF sensor on the factory airbox. Slide the red locking tab back with a flathead screwdriver, press the release, and disconnect the harness. Do the same for the Intake Air Temperature (IAT) sensor if your specific 2001-2003 4.0L has it mounted separately.
Remove the Breather Line: Locate the hard plastic PCV breather line attached to the side of the factory intake tube. Gently press the release tab and pull the hose straight off.
Loosen the Clamps: Grab your 8mm socket and loosen the factory hose clamps at the throttle body and at the airbox. Pull the factory rubber accordion tube off the engine.
Extract the Airbox and MAF: Unbolt the factory airbox using your 10mm socket and lift the assembly out of the engine bay. Once it is on your workbench, use your T20 Security Torx bit to carefully remove the MAF sensor from the housing. Place it on a clean, soft microfiber towel.

Phase 2: Installing the Cold Air Intake for Ford Ranger (2001-2003) 4.0L Engine - Red

Transfer the MAF Sensor: Take your factory MAF sensor and insert it carefully into the machined adapter on your new red intake tube. Secure the sensor using the supplied Allen-head bolts (usually requiring a 4mm Allen key). Do not overtighten; you just need to compress the O-ring to prevent vacuum leaks.
Mount the Heat Shield: Drop the new aftermarket heat shield into the factory airbox location. Bolt it down using your 10mm socket and the supplied hardware, utilizing the factory mounting holes.
Route the Red Intake Tube: Slide the provided silicone couplers onto the throttle body and the new intake tube. Position the tube so it does not rub against the alternator or radiator hoses. Tighten all T-bolt or worm-gear clamps snugly with your 8mm socket.
Connect the Filter and Hoses: Slide the red cone filter onto the end of the tube inside the heat shield and tighten the clamp. Reconnect the factory plastic PCV breather hose to the nipple on the new tube. Finally, plug the MAF harness back in and engage the red locking tab.
The 20-Second Rule: Reconnect your negative battery terminal. Turn the key to start the truck. Do not touch the gas pedal for at least 20 seconds. Let the 4.0L SOHC idle on its own so the ECU can calibrate to the increased volume of cold air.

Disclaimer: This is a general guide provided for the 2001-2003 Ford Ranger 4.0L. Always refer to your factory service manual for exact torque specifications and safety procedures.