Catalytic Converter for Mazda CX-5 (2014-2019) 2.5L

Direct-Fit Catalytic Converter for 2014-2019 Mazda CX-5 (KE/KF)

What it Does: The direct-fit catalytic converter replaces the degraded factory emissions core on 2014-2019 Mazda CX-5 2.5L models to restore balanced exhaust velocity, clear catalyst-efficiency fault codes, and guarantee reliable tailpipe compliance.

The Stock Mazda CX-5 Catalyst Deterioration

Over tens of thousands of thermal cycles, the OEM catalytic converter on the KE/KF chassis suffers washcoat thermal sintering and structural degradation. Repeated exposure to extreme exhaust gas temperatures degrades the internal washcoat, triggering persistent P0420 and P0430 diagnostic trouble codes as secondary oxygen sensors register insufficient oxygen storage capacity. In severe cases, the factory ceramic monolith fractures, rattling within the canister, inducing turbulent backpressure spikes, and choking engine efficiency under load.

The Engineering Solution

Engineered as a true bolt-on replacement, this unit features a robust stainless steel outer shell and thick-gauge mandrel-formed tubing that resist road brine corrosion and thermal fatigue cracking. Inside, a high-efficiency monolithic ceramic substrate treated with an active precious-metal washcoat maximizes surface area contact to rapidly convert HC, CO, and NOx into inert gases. CNC-machined mating flanges, pre-welded factory-located hanger brackets, and integrated O2 sensor bungs ensure OE-grade sealing and an airtight mechanical fit without welding or cutting.

What's Included

• 1 x Direct-Fit Catalytic Converter
• Exhaust Gasket(s)
• Mounting Hardware

Technical Specifications

Compatibility

• 2014 Mazda CX-5 2.5L FWD
• 2015 Mazda CX-5 2.5L FWD
• 2016 Mazda CX-5 2.5L FWD
• 2017 Mazda CX-5 2.5L FWD
• 2018 Mazda CX-5 2.5L FWD
• 2019 Mazda CX-5 2.5L FWD

Frequently Asked Questions & Fitment Warnings

Does this fit the KE and KF CX-5?

Yes, this is a direct fit for the 2014-2019 Mazda CX-5 equipped with the SkyActiv-G 2.5L (PY-VPS) engine. Fits front-wheel-drive (FWD) models only; does not fit All-Wheel-Drive (AWD) models or 2.0L engine variants.

Is this catalytic converter legal in California?

No, this assembly is EPA 49-state compliant and is not legal for sale or use in California or states enforcing CARB emissions regulations.

The Mazda Performance Caliber

Engineered to complement the high-compression dynamics of the SkyActiv-G platform, this converter restores smooth exhaust scavenging and factory throttle response while keeping OBD-II monitoring systems fault-free.