CARB Catalytic Converter – 2.25" Universal Fit - MagnaFlow 418005

Stay emissions compliant without sacrificing reliability with the MagnaFlow 418005 California Grade Universal Catalytic Converter (2.25” inlet/outlet). Built to meet CARB standards for legal use in California and other CARB-restricted states, this universal converter ensures your Miata or project vehicle runs clean while keeping the check engine light off.

Manufactured from highly corrosion-resistant stainless steel, the 418005 is engineered to withstand harsh conditions, extreme exhaust heat, and years of performance driving. The ribbed body and precision-welded seams prevent expansion and distortion, ensuring a long service life. Inside, the advanced ceramic honeycomb substrate is optimized for flow and efficiency, reducing harmful emissions while maintaining performance.

With a universal design, this converter fits a wide range of vehicles—including custom Miata exhaust setups—but requires cutting and welding for installation. Its compact size makes it especially useful for tight spaces in performance builds or retrofits.

Key Features:

• Inlet/Outlet Diameter: 2.25”

• Compliance: CARB-approved for California and CARB states

• Construction: Stainless steel, welded for strength

• Design: Round body, universal fit

Perfect for enthusiast Miata owners, daily drivers, and track-day racers in California, the MagnaFlow 418005 CARB-Compliant Converter provides peace of mind, performance, and durability—backed by MagnaFlow’s industry-leading reputation.

This Part Fits: