Universal Catalytic Converters for Custom Exhaust Builds

Universal Catalytic Converters for Custom Exhaust Builds

Universal catalytic converters replace failing OEM converters on vehicles where a direct-fit replacement is unavailable or where a custom exhaust configuration requires a weld-in solution. Selecting the correct substrate size, inlet and outlet diameter, and cell density ensures proper fit and emissions performance.

Popular Upgrades

The most popular choices include high-flow universal catalytic converters with 400-cell metallic substrates for performance applications, standard-density 3-way catalytic converters for emissions-legal replacements, and high-temperature stainless steel bodies for durability under extreme exhaust heat. High-flow options from MagnaFlow and similar brands reduce backpressure while maintaining catalytic efficiency.

What size universal catalytic converter do I need?

Universal catalytic converter sizing is based on inlet and outlet pipe diameter, body length, and overall length. Common inlet sizes range from 1.75 to 3 inches. Matching the converter to your existing pipe diameter is essential for leak-free installation and proper flow. Check individual product specs for inlet, outlet, and overall dimensions before ordering.

Can a universal catalytic converter pass emissions testing?

This depends on your state and local regulations. Some states require direct-fit, CARB-compliant converters for emissions testing. Universal converters may not be legal for all street applications. Confirm local emissions laws before purchasing a universal fit converter for a registered street vehicle.

Black Ops Auto Works ships catalytic converters fast with hassle-free returns. Browse related categories: performance exhaust, suspension upgrades, air intake systems.