K&N 2024 Mazda CX-90 High-Flow Engine Air Filter - 33-5140

The K&N 33-5140 High-Flow Engine Air Filter is a direct drop-in replacement air filter engineered specifically for the 2024–2025 Mazda CX-90, including the PHEV Turbo and Turbo S trims. Unlike a disposable paper filter you toss every 12,000–15,000 miles, this washable, reusable cotton gauze filter is designed to last the entire lifespan of your vehicle — making it one of the most cost-effective performance upgrades you can bolt onto your CX-90 today.

Key Features & Benefits

• Layered, Oiled Cotton Gauze Media: K&N's signature multi-layer cotton gauze construction is engineered to improve airflow compared to standard paper filters while still capturing airborne contaminants — giving your engine cleaner air and better breathing in one package.
• Designed to Increase Horsepower: The high-flow design is engineered to provide an increase in horsepower by allowing more air to reach your engine's intake — a meaningful benefit for the CX-90's turbocharged powerplant.
• Washable & Reusable — Lasts Up to 50,000 Miles Between Cleanings: With proper maintenance, this filter can go up to 50,000 miles before a cleaning is required (depending on driving conditions), dramatically reducing your long-term filter costs versus disposable alternatives.
• True Drop-In Fitment: The 33-5140 is designed to install directly into your factory airbox with no cutting, drilling, or modifications required — a straightforward swap that anyone comfortable with basic maintenance can complete.
• K&N No-Hassle Lifetime Limited Warranty: K&N backs every performance air filter with their Lifetime Limited Warranty, so you're covered for as long as you own the vehicle.
• Proposition 65 Compliant: California residents, this product includes the required Prop 65 notice — it is available for purchase and ships to California.

Specifications

• Part Number: 33-5140
• Brand: K&N Engineering
• Filter Media: Layered, oiled cotton gauze
• Height: 1.563 in (40 mm)
• Washable / Reusable: Yes
• Cleaning Interval: Up to 50,000 miles depending on driving conditions
• Warranty: K&N No-Hassle Lifetime Limited Warranty
• Proposition 65: Yes

Fitment

The K&N 33-5140 is confirmed to fit the following vehicles:

• 2024 Mazda CX-90 – PHEV Turbo
• 2024 Mazda CX-90 – Turbo
• 2024 Mazda CX-90 – Turbo S
• 2025 Mazda CX-90 – including PHEV Turbo and Turbo S models

If your CX-90 trim or model year isn't listed above, or if you're unsure whether this filter fits your specific build, reach out to the ThreePiece.us team before ordering — we're happy to verify fitment for you.

What's in the Box

• 1x K&N 33-5140 High-Flow Replacement Air Filter

Why Buy from ThreePiece.us

• Free Shipping on Every Order: No minimum purchase required — your K&N filter ships free to the continental US.
• Affirm Financing Available: Spread the cost over time with Affirm — apply at checkout with no impact to your credit score to check your rate.
• Expert Fitment Support: ThreePiece.us has served 10,000+ customers and our team is here to verify parts fit before you buy. Call us at 813-535-5801 or email sales@threepiece.us with your year, make, model, and trim.
• Regularly Stocked Product: The K&N 33-5140 is a standard stocked item — no special-order delays.
• Price Match Guarantee: Found it for less somewhere else? We'll match it.

Frequently Asked Questions

Q: Does the K&N 33-5140 fit the 2025 Mazda CX-90 as well as the 2024?
A: Yes. The 33-5140 is confirmed to fit both the 2024 and 2025 Mazda CX-90, including the PHEV Turbo and Turbo S models. If you have a specific trim you're unsure about, contact our team and we'll verify fitment before you order.

Q: Do I need to modify my factory airbox to install this filter?
A: No modifications are required. The K&N 33-5140 is a direct drop-in replacement designed to seat into your existing factory airbox exactly where your stock filter sits. No cutting, drilling, or additional hardware needed.

Q: How often do I need to clean this filter?
A: K&N recommends cleaning the 33-5140 up to every 50,000 miles, though actual cleaning intervals may vary depending on your driving conditions. If you frequently drive on dusty roads or unpaved surfaces, you may need to inspect and clean it more often.

Q: Is this filter covered by a warranty?
A: Yes. K&N backs the 33-5140 with their No-Hassle Lifetime Limited Warranty, covering the filter for the lifespan of your vehicle when properly cleaned and maintained according to K&N's instructions.