Maintaining your 2019 Ford F150's air filtration system is crucial for both engine performance and cabin comfort. This comprehensive guide covers everything you need to know about replacing both your engine air filter and cabin air filter, including step-by-step instructions, product recommendations, and maintenance schedules. Proper air filter care ensures optimal horsepower, fuel efficiency, and interior air quality while protecting your engine from harmful contaminants.

Regular maintenance of your F150's air filters is one of the most important yet often overlooked aspects of vehicle care. The engine air filter protects your engine from dust and debris, while the cabin air filter ensures clean air inside your vehicle. Both play vital roles in your truck's performance and your driving comfort.

Understanding Your 2019 F150's Air Filtration System

Your Ford F150 has two separate air filtration systems that serve different but equally important functions. The engine air filter is responsible for cleaning the air entering your engine's combustion chamber, protecting critical components from abrasive particles that can cause premature wear. The cabin air filter purifies the air entering your vehicle's interior through the HVAC system, removing pollutants, allergens, and odors before they reach the cabin.

These two systems work independently but are both essential for optimal vehicle operation and occupant comfort. Neglecting either filter can lead to reduced performance, increased fuel consumption, and potential long-term damage to your vehicle's systems. Understanding the differences between these filters and their maintenance requirements will help you keep your F150 in peak condition.

Engine Air Filter Replacement for Your 2019 F150

The engine air filter in your 2019 F150 plays a critical role in engine performance and longevity. A clean air filter ensures optimal airflow to the engine, which is essential for proper combustion, horsepower, and fuel efficiency. Depending on your F150's engine size (3.3L V6, 3.0L Power Stroke, 5.0L V8, etc.), the specific filter may vary, but the replacement process is similar across models.

When to Replace Your Engine Air Filter

Most manufacturers recommend replacing your engine air filter every 30,000 miles under normal driving conditions. However, if you frequently drive in dusty, polluted, or off-road environments, you should inspect and potentially replace it more often - as frequently as every 15,000 miles. Signs that your engine air filter needs replacement include reduced fuel economy, decreased acceleration, unusual engine sounds, or a visibly dirty filter when inspected .

A simple way to check your engine air filter is to hold it up to a light source. If you can't see light passing through the filter media, it's time for a replacement. Regular inspection during oil changes is good practice, especially if you put many miles on your truck or drive in challenging conditions.

Step-by-Step Engine Air Filter Replacement

Replacing the engine air filter in your 2019 F150 is a straightforward DIY task that requires minimal tools and can be completed in about 20-30 minutes. Here's how to do it:

1. ​Preparation: Park on level ground, shift to PARK, engage the parking brake, and ensure the engine is off and has cooled down. Pull the hood release inside your vehicle (by the driver's left foot) and lift the hood, securing it with the prop rod .

2. ​Locate the Air Filter Housing: Stand in front of your truck and look toward the front passenger side. You'll see a large black plastic box with a sizeable tube connecting it to the engine - this is the air filter housing .

3. ​Open the Housing: The housing lid is secured by several metal spring clips around its edges. Flip each clip open with your fingers. If any are stubborn, gently use a flathead screwdriver for assistance. Once all clips are released, lift the front of the lid and slide it back slightly to free the rear tabs. There's no need to disconnect any sensors or hoses for this basic replacement .

4. ​Remove the Old Filter: Take out the old filter, noting how it sits with its rubber sealing edge facing outward. This will help you properly install the replacement. Take this opportunity to wipe out any leaves, debris, or dust from the bottom of the housing using a clean rag or small vacuum. Be careful not to push any dirt down the intake tube leading to the engine .

5. ​Install the New Filter: Place the new filter into the housing, ensuring the rubber seal is properly seated in the groove around the entire perimeter. The filter should sit flat with no gaps at the edges. Double-check that the sealing surface is even all the way around to prevent unfiltered air from bypassing the filter .

6. ​Reassemble: Refit the housing lid by sliding the rear tabs into place first, then lowering the front. Press down firmly and snap each metal clip back into position until they click shut. Verify that the lid is even all around and completely secured .

7. ​Final Check: Remove all tools and rags from the engine bay, then close the hood firmly. Start the engine and listen for normal operation without unusual hissing sounds from the air box area, which could indicate an improper seal .

Choosing the Right Engine Air Filter for Your F150

When selecting a replacement engine air filter for your 2019 F150, you have several options ranging from standard OEM-style filters to high-performance aftermarket choices:

​OEM Replacement Filters: These are designed to meet the original specifications of your F150 and provide reliable performance. Brands like Motorcraft offer filters specifically engineered for your truck's requirements .

​High-Performance Filters: Brands like K&N and AFE offer high-flow air filters that can increase horsepower and acceleration. The K&N High-Flow Original Lifetime Engine Air Filter, for example, uses multiple layers of premium cotton gauze and can increase horsepower . These filters are typically washable and reusable, offering long-term value. The AFE Pro 5R Drop-In Air Filter features five layers of progressively finer mesh cotton media designed for high airflow and superior filtration .

​Washable/Reusable Filters: These filters, such as those from K&N and AIRAID, can be cleaned and re-oiled rather than replaced, potentially saving money over time. The AIRAID panel filter made of cotton gauze and non-woven synthetic material is an example of a washable and reusable option . K&N claims their washable engine air filters can last up to 100,000 miles before needing cleaning under normal driving conditions .

Consider your driving conditions, performance needs, and budget when selecting an air filter. High-performance filters may offer better airflow but often come at a higher initial cost, though reusable options may provide long-term savings.

Cabin Air Filter Replacement for Your 2019 F150

The cabin air filter in your 2019 F150 is essential for maintaining air quality inside your vehicle's cabin. It filters out dust, pollen, pollutants, and other contaminants before they enter your HVAC system. A clean cabin air filter ensures optimal airflow for your heating and cooling systems while protecting you and your passengers from airborne particles.

When to Replace Your Cabin Air Filter

Ford recommends replacing your cabin air filter every 15,000 to 30,000 miles, or more frequently if you drive in dusty or polluted environments. Many technicians suggest a more conservative interval of 12,000 to 15,000 miles or annually, whichever comes first . Signs that your cabin air filter needs replacement include reduced airflow from vents, musty odors when the HVAC system is running, increased fan noise, or persistent window fogging.

If you or your passengers have allergies or respiratory sensitivities, you may want to replace the cabin air filter more frequently to maintain optimal air quality inside your vehicle. Seasonal changes are a good reminder to check your cabin air filter, especially before summer when air conditioning use increases.

Step-by-Step Cabin Air Filter Replacement

Replacing the cabin air filter in your 2019 F150 is a beginner-friendly task that typically takes 10-20 minutes. The filter is located behind the glove box on the passenger side. Here's the complete process:

1. ​Preparation: Park your truck on level ground, set the parking brake, and turn off the ignition. Empty the contents of your glove box to prevent items from falling out during the procedure .

2. ​Access the Filter Compartment: Open the glove box fully. On the right side, you'll see a small damper cord (a string that controls the glove box's descent). Unclip this cord from its pin. Squeeze the sides of the glove box inward to clear the stoppers, then lower the glove box downward .

3. ​Remove the Filter Cover: Behind the glove box, you'll see a rectangular plastic cover - this is the cabin air filter housing. The cover is typically secured with clips or tabs. Press the tabs inward or unclip the cover. Some models may have screws that need to be removed with a screwdriver .

4. ​Remove the Old Filter: Pull the old filter straight out of the housing. Take note of the airflow arrow printed on the frame; this indicates the proper installation direction. It's helpful to remember that the arrow typically points downward in F150 models .

5. ​Clean the Housing: Before installing the new filter, take a moment to wipe out any debris, leaves, or dust from the filter housing using a clean cloth or vacuum attachment. Be careful not to push any debris further into the HVAC system .

6. ​Install the New Filter: Insert the new filter with the airflow arrow pointing in the correct direction (typically downward toward the blower motor). Make sure the filter is seated properly and fits snugly without gaps around the edges .

7. ​Reassemble: Reattach the filter cover by snapping it back into place or securing it with screws if applicable. Lift the glove box back into position, squeezing the sides to clear the stoppers. Reattach the damper cord to the pin on the right side .

8. ​Test the System: Start your vehicle and turn on the HVAC system. Run the fan through various speeds and check for proper airflow from all vents. Listen for any unusual noises that might indicate the filter isn't seated correctly .

Choosing the Right Cabin Air Filter for Your F150

There are several types of cabin air filters available for your 2019 F150, each with different features and benefits:

​Standard Particulate Filters: These basic filters trap dust, pollen, and other particles. They're effective for basic filtration needs and are often the most affordable option.

​Activated Carbon Filters: These filters, like the Puroma Cabin Air Filter with Activated Charcoal, add a layer of activated carbon that absorbs odors and reduces gaseous pollutants from entering your cabin. They're ideal for urban driving where traffic fumes and odors are common .

​HEPA Filters: High-Efficiency Particulate Air filters, such as the Bosch 6081C HEPA Cabin Air Filter, offer the highest level of particulate filtration, capturing up to 99.97% of particles as small as 0.3 microns. These are excellent for allergy sufferers or those with respiratory sensitivities .

​Washable/Reusable Filters: Brands like K&N offer lifetime cabin air filters that can be washed and reused. The K&N Lifetime Cabin Air Filter is designed to be washed and reconditioned rather than replaced, potentially saving money over time while reducing waste .

When selecting a cabin air filter, consider your specific needs. If you primarily drive in urban areas with traffic congestion, an activated carbon filter may be beneficial for odor reduction. If you have allergies or respiratory concerns, a HEPA filter might be worth the additional cost. For those looking for long-term value and sustainability, a washable filter could be the best choice.

Benefits of Regular Air Filter Maintenance

Maintaining both air filters in your 2019 F150 provides numerous benefits that impact performance, efficiency, comfort, and even resale value:

​Improved Engine Performance: A clean engine air filter ensures optimal airflow to your engine, which can improve acceleration and overall performance. High-flow filters like the AFE Pro 5R are specifically designed to maximize airflow and enhance throttle response .

​Enhanced Fuel Efficiency: A clogged air filter restricts airflow to the engine, forcing it to work harder and burn more fuel. Replacing a dirty air filter can improve gas mileage by up to 10%, according to the U.S. Department of Energy.

​Better Cabin Air Quality: A clean cabin air filter effectively removes pollutants, allergens, and odors from the air entering your vehicle. This is particularly important for individuals with allergies, asthma, or other respiratory conditions. The Bosch 6081C HEPA Cabin Air Filter offers 99.97% filtration efficiency for superior air cleaning .

​Extended HVAC System Life: Regular cabin air filter replacement reduces strain on your blower motor and HVAC components, potentially extending their lifespan and preventing costly repairs.

​Increased Vehicle Value: A well-maintained air filtration system demonstrates proper vehicle care to potential buyers, helping maintain your F150's resale value.

Professional vs. DIY Replacement

While replacing both engine and cabin air filters are among the most straightforward maintenance tasks, some owners may prefer professional service. DIY replacement typically costs only the price of the filter itself, while professional replacement at a dealership or repair shop will include labor charges.

If you're comfortable with basic tools and following step-by-step instructions, you can confidently replace both filters yourself and save on labor costs. However, if you're uncertain or prefer professional servicing, the cost is typically reasonable for these relatively quick procedures.

Conclusion

Regular maintenance of your 2019 F150's air filters is essential for optimal performance, efficiency, and cabin comfort. The engine air filter protects your investment under the hood, while the cabin air filter ensures a healthy environment inside your vehicle. Both are relatively inexpensive components that play crucial roles in your driving experience.

By following the guidelines and step-by-step instructions in this article, you can confidently maintain your F150's air filtration system whether you choose DIY replacement or professional service. Regular attention to these often-overlooked components will keep your truck running strong and your cabin air fresh for miles to come. Record your replacement dates and mileage to stay on top of your maintenance schedule and enjoy the benefits of a properly maintained air filtration system.