Cold Air Intake for Mazda Miata MX5 (1999-2005) 1.8L Non-Turbo

Unlock the BP-Series Pulse: Performance Air Intake for 1999-2005 Mazda Miata MX-5 1.8L

Who Is This For? Designed specifically for NB Mazda Miata owners running the 1.8L BP-Series Inline-4 who want to maximize throttle response, increase mid-range torque, and achieve that signature aggressive intake growl during spirited canyon drives or track days.

The Anemic Intake Restriction: From the factory, your Miata is choked by a restrictive plastic air box designed for silence rather than speed. As the BP-4W and BP-Z3 engines rev toward their 7,000 RPM redline, the stock corrugated rubber intake hoses create turbulence while the enclosed box traps heat from the exhaust manifold. You step on the gas to exit a corner, and the engine feels sluggish, gasping for the cold air it needs to breathe.

The Engineering Solution: We engineered this kit to replace the heat-soaking factory plastic with a high-flow, black powder-coated aluminum induction tube. By utilizing a dedicated heat shield and a washable high-flow filter, this system draws cooler, denser air from outside the engine bay. The transition from the filter to the throttle body is smoothed out using 4-ply reinforced silicone couplers, ensuring laminar airflow that allows your Miata to react instantly to every throttle input.

The Comparative Edge: Why This Beats the Competition

• The Power Gain: Delivers a dyno-proven increase of 10-15 horsepower and up to 15% more torque, specifically targeting the flat spots in the factory power curve.
• Material Superiority: Unlike cheap kits that use thin rubber boots that crack over time, this system uses 4-Ply High-Pressure Silicone Couplers and Stainless Steel button-head hardware for a lifetime of reliability.
• Thermal Management: Features a dedicated Heat Shield and Stainless Steel Filter Cover to block radiant engine heat, unlike "short ram" intakes that actually lose power by sucking in hot radiator air.

Technical Specifications & Factory Ratings

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1999 Mazda Miata MX-5 (1.8L Non-Turbo)
• 2000 Mazda Miata MX-5 (1.8L Non-Turbo)
• 2001 Mazda Miata MX-5 (1.8L Non-Turbo)
• 2002 Mazda Miata MX-5 (1.8L Non-Turbo)
• 2003 Mazda Miata MX-5 (1.8L Non-Turbo)
• 2004 Mazda Miata MX-5 (1.8L Non-Turbo)
• 2005 Mazda Miata MX-5 (1.8L Non-Turbo)

Interchange Part Numbers:

AF-Dynamic-MX5-9905-18, 1.8L BP-Series Intake, NB Miata Performance Air System

The Performance Promise

Buy with confidence. This kit is designed for a direct bolt-on installation using simple hand tools—no drilling or fabrication required. Backed by real automotive experts and fast shipping to get you back on the road and into the powerband.