K&N High-Flow Engine Air Filter for 2015–2024 124 Spider/MX‑5 — Reusable, Washable Performance (33-5040)

The K&N High-Flow Original Lifetime Engine Air Filter (33-5040) is a washable, reusable performance air filter that increases airflow and is built to last the life of compatible 2015–2024 Abarth/Fiat/Mazda 124 Spider and MX-5 models.

Designed as a direct replacement for the factory paper element, this K&N filter delivers improved airflow and engineered filtration without requiring an aftermarket airbox or complex tuning. Manufactured in the USA with multi-layer cotton gauze media, the 33-5040 is pre-oiled, pre-fit, and intended for long service intervals — making it a practical upgrade for drivers who want better throttle response and lower recurring maintenance costs.

How does this filter improve everyday driving?

By permitting more air into the engine while still trapping dirt and debris, the K&N High-Flow filter can help the engine breathe more freely under acceleration and at highway speeds. Gains vary by vehicle and conditions, but drivers commonly notice crisper throttle response and steadier power delivery.

• Engineered media increases airflow up to 50% in lab conditions.
• Multi-layer cotton gauze captures contaminants without overly restricting intake.
• Pre-oiled and ready to install for quick, no-tools swap in most factory boxes.

What maintenance and lifespan should I expect?

This K&N element is washable and reusable, intended to outlast multiple disposable filters and reduce landfill waste. Under normal highway driving the recommended cleaning interval is roughly every 75,000 miles, though dusty or off-road use requires earlier service.

• Clean roughly every 75,000 miles under average highway conditions.
• Use K&N cleaning kit or equivalent filter cleaner and re-oil following instructions.
• Covered by a limited 10-year/million-mile warranty (limitations apply).

Will it fit my Abarth, Fiat or Mazda without modifications?

The 33-5040 is engineered to be a direct fit replacement for specific 2015–2024 models listed by K&N, so installation is typically a simple swap into the factory air box. Confirm compatibility with your exact model year and trim before ordering.

• Compatible with 2016–2018 Abarth 124 Spider and 2016–2020 Fiat 124 Spider.
• Fits several Mazda MX-5/Miata and Roadster model years from 2015–2024; check vehicle fit guide.
• Installation usually takes minutes with common hand tools or none at all.

Are there any environmental or warranty benefits?

Yes — because it’s washable and reusable the filter reduces the number of disposable elements discarded over a vehicle’s life, and K&N supports its products with a long limited warranty. The durable construction also means fewer replacements and reduced lifetime cost compared to paper filters.

• Reusable design reduces replacement-filter waste and recurring purchases.
• No-hassle limited lifetime warranty for stock replacement K&N filters (limitations apply).
• Manufactured in the USA to meet established quality standards.

Who is this for? The K&N High-Flow Original Lifetime Air Filter 33-5040 is ideal for owners of compatible Abarth, Fiat, and Mazda 124 Spider and MX-5 models who want an easy, durable upgrade to their intake system. It suits drivers seeking improved throttle feel and longer service intervals without modifying the factory intake, as well as mechanically minded enthusiasts who prefer reusable components that lower long-term operating costs.