K&N 57-0656 57i Cold Air Intake for 2006-2015 Mazda MX-5 / Miata 1.8L-2.

Vehicle Fitment

• 2006-2015 Mazda MX-5 / Miata (1.8 L or 2.0 L inline-4, Gen NC)

Features

• High-flow cotton-gauze air filter for improved engine breathing
• Large conical filter increases airflow vs stock boxed filter
• Flexible rubber/hosing intake tube for easy fitment in compact engine bay
• Simple bolt-on installation - usually under 90 minutes
• Washable and reusable filter - service interval up to 100,000 miles under normal driving
• Improved throttle response and engine sound compared to stock intake
• Direct-fit design - no cutting, drilling or permanent modifications required
• Includes all necessary mounting hardware and clamps for straightforward installation

Specifications

• Filter material: Oiled cotton gauze, reusable
• Filter shape: Round / conical, large-volume design
• Intake tube: Flexible rubber / hose-type construction
• Clamp: Stainless-steel regular clamp included
• Replacement filter part number: RC-4550
• Service interval: Up to 100,000 miles under normal driving conditions
• Weight: approx. 2.8 lb (≈ 1.3 kg)
• Installation time: 60-90 minutes using basic hand tools
• Emissions note: Not CARB-legal - not compliant for use in California / CARB states

Included Components

• 1x Large cotton-gauze conical air filter
• 1x Flexible rubber intake hose / pipe
• 1x Stainless-steel clamp for intake tube
• Mounting hardware as required for fitment
• Installation instructions manual

Product Description

The K&N 57-0656 57i Cold Air Intake is engineered specifically for the 2006-2015 Mazda MX-5 / Miata (Gen NC) equipped with a 1.8 L or 2.0 L inline-4 engine. By replacing the restrictive factory airbox with a free-flowing, large-volume conical cotton-gauze filter and flexible intake hose, the system improves airflow and reduces intake restrictions - resulting in a noticeable increase in throttle response, more immediate engine revving, and a deeper induction tone under acceleration.

Designed for easy installation, the 57-0656 kit uses stock mounting points and requires only basic hand tools - typically taking under 90 minutes to install. The reusable filter is washable and serviceable for up to 100,000 miles under normal driving conditions, making this a low-maintenance performance upgrade. For MX-5 / Miata owners seeking improved responsiveness, slightly enhanced power delivery, and a sportier engine note with minimal hassle - this intake offers an effective and proven solution.