Performance Air Filter for Mazda MX-6, 626, MX-5 Miata NB, Ford Probe (1991-2005)

Maximize Volumetric Efficiency for Your Mazda B-Series & K-Series Engines

Who It’s For: This high-flow performance filter is a precision upgrade for Mazda enthusiasts running the B-Series (1.6L/1.8L) in the Miata NB, the F-Series (1.9L/2.0L) in the 626, and the rev-happy K-Series 2.5L V6 found in the MX-6 and Ford Probe.

The Problem: The factory paper filters used in the Mazda B-Series and K-Series airboxes are designed for cost-effectiveness, not performance. These thick paper elements create significant pressure drop, effectively "strangling" the engine at higher RPMs. Furthermore, traditional filters allow particles up to 10 microns through, which can lead to premature wear on internal components over thousands of miles.

The Solution: We have selected this BMC performance filter to replace the restrictive stock element. Built with a multi-layered cotton gauze and low-viscosity oil, it captures impurities as small as 7 microns while significantly increasing air velocity. Unlike the stock unit, this features a "Full Moulding" design with no welded joints, ensuring it won’t crack or leak under the high-heat conditions common in the MX-5 and MX-6 engine bays.

Why This is the Ultimate Upgrade

• Enhanced Induction Flow: By reducing intake restriction, your engine reaches its target AFR more efficiently, improving throttle response across the powerband.
• Full Moulding Construction: The characteristic red rubber frame is cast in a single piece, eliminating the weak points found in cheap multi-piece filters that often fail at the seams.
• Superior Filtration: Captures debris down to 7 microns, providing better protection for your cylinder walls than the 10-micron standard of OEM paper filters.

Technical Specifications

Compatibility & OEM Reference

Fits the following vehicles (BMC fitment data):

• Ford Probe 2.0 16V (116 HP) | 1994-1998
• Ford Probe 2.5 V6 24V (162 HP) | 1994-1998
• Mazda 626 IV (GE) 1.9 (90 HP) | 1994-1997
• Mazda 626 IV (GE) 1.9 (105 HP) | 1991-1997
• Mazda 626 IV (GE) 2.0 i (115 HP) | 1991-1997
• Mazda 626 IV (GE) 2.0 i 4WD (115 HP) | 1992-1997
• Mazda 626 IV (GE) 2.5 V6 (163 HP) | 1994-1997
• Mazda 626 IV (GE) 2.5 V6 (165 HP) | 1992-1997
• Mazda 626 V (GF/GW) 2.0 (115 HP) | 1997-2002
• Mazda 626 V (GF/GW) 2.0 (136 HP) | 1997-2002
• Mazda 626 V (GF/GW) 1.9 (90 HP) | 1997-2000
• Mazda 626 V (GF/GW) 1.9 (100 HP) | 1999-2002
• Mazda Miata (NB) 1.6 (110 HP) | 1998-2005
• Mazda Miata (NB) 1.8 (139 HP) | 2000-2005
• Mazda Miata (NB) 1.8 (140 HP) | 1998-2005
• Mazda Miata (NB) 1.8 (146 HP) | 2000-2005
• Mazda MX-5 1.6 16V (110 HP) | 1998-2005
• Mazda MX-5 1.8 16V (139 HP) | 2000-2005
• Mazda MX-5 1.8 16V (140 HP) | 1998-2005
• Mazda MX-5 1.8 16V (146 HP) | 2000-2005
• Mazda MX-6 2 (115 HP) | 1992-1997
• Mazda MX-6 2.5 i V6 (163 HP) | 1994-1997
• Mazda MX-6 2.5 V6 (165 HP) | 1992-1997
• Mazda Roadster II (NB) 1.6 (110 HP) | 1998-2005
• Mazda Roadster II (NB) 1.8 (139 HP) | 2000-2005
• Mazda Roadster II (NB) 1.8 (140 HP) | 1998-2005
• Mazda Roadster II (NB) 1.8 (146 HP) | 2000-2005

OEM Cross Reference (BMC): FORD 3397078; MAZDA FS0513Z409A, FS0513Z40, FS1113Z409A, FS1113Z40

The Performance Promise

Buy with confidence. We’ve seen these filters transform the intake sound and top-end pull on dozens of NB Miatas and KL-swapped probes. Backed by real automotive experts and fast shipping.

Common Questions

Which vehicles does this filter fit?
BMC lists the Mazda 626 GE and GF / GW, MX-6, MX-5 / Miata NB 1.6 and 1.8, and the Ford Probe 2.0 and 2.5 V6.

Is it a direct fit?
Yes. It replaces the factory element in the stock airbox with no modifications.

Can I clean and reuse it?
Yes. Wash and re-oil it with a BMC regeneration kit.

How fine is the filtration?
The multi-layer oiled cotton traps particles down to 7 microns.

What will I notice after installing it?
Sharper throttle response and a stronger intake sound.