K&N Replacement Air Filter FORD F150 LIGHTNING 5.4L 99-04, F150 Harley-Davidson 5.4L 02-03

Washable Lifetime Air Filter for the SVT Lightning and F-150 Harley-Davidson 5.4L V8

The K&N 33-2140-1 is a drop-in replacement air filter for 1999-2004 Ford F-150 SVT Lightning and 2002-2003 Ford F-150 Harley-Davidson Edition trucks equipped with the 5.4L V8 supercharged engine.

The 33-2140-1 installs directly into the factory airbox without modification, eliminating the need for any custom brackets, adapters, or intake tubes. K&N's oiled cotton gauze media construction allows more air to pass through than a standard paper element while maintaining filtration efficiency up to 99%. The 33-2140-1 is cleanable, rechargeable with K&N filter oil, and designed to last the lifetime of the vehicle. K&N backs the 33-2140-1 with their No-Hassle Lifetime Limited Warranty.

Key Features

• Direct Fit for SVT Lightning and F-150 Harley-Davidson Edition: The 33-2140-1 is engineered to fit directly into the factory air box on 1999-2003 F-150 Lightning, 2004 F-150 Heritage SVT Lightning, and 2002-2003 F-150 Harley-Davidson Edition without modifications
• Up to 99% Filtration Efficiency: K&N's layered oiled cotton gauze media captures airborne contaminants at efficiency levels up to 99% while allowing greater airflow than factory paper filters
• Washable and Reusable: The 33-2140-1 can be cleaned and re-oiled with K&N's cleaning kit and returned to service, eliminating the need to purchase replacement disposable filters over the vehicle's life
• Designed for Increased Airflow: The open-flow oiled cotton gauze construction of the 33-2140-1 reduces intake restriction versus the factory paper element, supporting improved throttle response and airflow to the supercharged 5.4L engine
• Lifetime Limited Warranty: K&N backs the 33-2140-1 with their No-Hassle Lifetime Limited Warranty against defects, covering the filter for the lifetime of the vehicle it is purchased for
• Pre-Oiled and Ready to Install: The 33-2140-1 arrives pre-oiled from the factory and ready for installation with no additional preparation required

Fitment Table

Specifications

What's Included

• One (1) K&N 33-2140-1 replacement air filter (pre-oiled, ready to install)

About K&N Engineering

K&N Engineering has manufactured high-flow air filters since 1969 and is the originator of the washable, reusable cotton gauze automotive air filter. Their drop-in replacement filters are sold globally and are approved for emissions-compliant use in most states. K&N's No-Hassle Lifetime Limited Warranty is among the longest in the aftermarket filter industry.

Frequently Asked Questions

What is the K&N 33-2140-1?

The K&N 33-2140-1 is a washable, reusable drop-in replacement air filter for the 1999-2003 Ford F-150 SVT Lightning, 2004 Ford F-150 Heritage SVT Lightning, and 2002-2003 Ford F-150 Harley-Davidson Edition with the 5.4L supercharged V8. It fits directly into the factory air box without modification and is backed by K&N's No-Hassle Lifetime Limited Warranty.

Does the 33-2140-1 fit the 2004 SVT Lightning?

The 2004 Lightning was sold as the Ford F-150 Heritage SVT Lightning and uses the same 5.4L supercharged V8 as the 1999-2003 Lightning. The 33-2140-1 fits the 2004 F-150 Heritage SVT Lightning as confirmed by K&N's fitment data.

Is the K&N 33-2140-1 emissions legal in California?

K&N drop-in replacement filters are designed to be emissions compliant in most applications. However, California emissions compliance for specific applications should be verified on K&N's CARB exemption list before purchasing if you are in a state requiring CARB compliance. The 33-2140-1 carries a Prop 65 warning for California.

How often does the 33-2140-1 need to be cleaned?

K&N recommends cleaning the 33-2140-1 every 50,000 miles under normal driving conditions, or more frequently in dusty or off-road environments. After cleaning, re-oil with K&N's air filter oil before reinstalling.

Will the 33-2140-1 increase horsepower on my SVT Lightning?

K&N air filters are designed to reduce intake restriction compared to the factory paper element, which can support improved airflow into the supercharged 5.4L engine. Actual power gains vary by vehicle condition, tune, and other modifications.

Can I clean the 33-2140-1 myself?

Yes. K&N sells a filter cleaning kit (K&N 99-5000) that includes air filter cleaner and filter oil. Soak the filter in the cleaner, rinse with low-pressure water from the clean side out, allow to fully dry, then apply K&N oil evenly to the dirty side pleats before reinstalling.

Is the 33-2140-1 a direct fit or does it need modification?

The 33-2140-1 is a direct drop-in replacement for the factory air filter. It installs into the stock air box using the original filter retaining hardware. No modification to the air box, intake tube, or mass air sensor is required.

What warranty does the K&N 33-2140-1 carry?

K&N backs the 33-2140-1 with their No-Hassle Lifetime Limited Warranty. If the filter fails under normal use conditions at any point during the life of the vehicle it was purchased for, K&N will replace it at no charge.

Installation Instructions

1. Open the hood and locate the factory air box on the 5.4L supercharged engine. The air box is mounted on the driver side of the engine bay
2. Release the air box lid clamps or screws and lift the lid to expose the factory paper air filter
3. Remove the factory paper air filter and discard
4. Inspect the inside of the air box for debris. Remove any dirt, leaves, or material before installing the K&N 33-2140-1
5. Place the 33-2140-1 into the air box with the clean (inner) side facing down and the dirty (outer cotton gauze) side facing up toward the incoming air flow
6. Seat the filter fully in the air box recess. Close the air box lid and secure all clamps or screws
7. Start the engine and verify normal operation

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.