FOMIUZY 2.5" High-Flow Front Catalytic Converter Pair — 2.5" Inlet/Outlet, 11" Length with O2 Port, Aluminized Stainless Steel

The FOMIUZY 2.5" inlet/outlet high-flow front catalytic converter is a direct-fit replacement catalytic tube with an O2 sensor port designed to restore exhaust filtering and engine efficiency for compatible vehicles.

This replacement catalytic converter from FOMIUZY is a universal front-section unit with 2.5" inlet and outlet, an 11" overall length, and a built-in O2 sensor port for straightforward installation. It arrives as a pair and is manufactured from aluminized stainless steel with a double-layer ceramic carrier to balance flow and filtration. The part is built to meet EPA and OBD3-aligned factory procedures for many applications (note: not for sale in certain states with stricter emission rules), and FOMIUZY backs it with lifetime warranty support.

How does this catalytic converter fit my vehicle?

This unit is designed as a universal direct-fit front converter with standard 2.5" inlet and outlet tubing and an 11" overall body length. It installs in place of like-sized front catalytic assemblies and includes an O2 sensor port so you can reuse your vehicle's sensor.

• 2.5" inlet and 2.5" outlet for common exhaust piping.
• 11" overall body length to match compact front converters.
• Direct-replacement design intended to align with OEM mounting points.
• Check OEM part number and exhaust dimensions before purchase.

What materials and construction ensure durability?

FOMIUZY uses aluminized stainless-steel tubing for the shell, resisting rust and exposure from road conditions. Inside is a double-layer, high-temperature ceramic carrier engineered to increase surface area and maintain high flow while supporting filtration performance.

• Aluminized stainless-steel outer shell for corrosion resistance.
• Double-layer ceramic core for greater surface contact and flow.
• Factory-tested to meet or exceed OEM tolerances.
• Weld and clamp-ready design; welding recommended to improve sealing.

Will this unit clear error codes or improve driveability?

Replacing a degraded or missing front catalyst with this FOMIUZY converter can address fault codes tied to catalytic efficiency when used on compatible vehicles and correctly installed. The built-in O2 sensor port lets you reinstall your existing sensor to help the engine control module regain accurate feedback.

• Helps resolve catalytic-efficiency trouble codes when size and fit match.
• O2 sensor port accommodates reuse of the factory sensor.
• May reduce noise and restore quieter exhaust operation after replacement.
• Professional installation and proper sealing improve results.

Are there legal or regional restrictions I should know about?

This converter is produced under procedures that align with EPA and OBD3 production practices, but it is not sold in states with more stringent emission regulations (for example, California, Colorado, New York, and Maine). Always confirm local emissions laws and vehicle-specific requirements before purchasing.

• Manufactured under EPA/OBD3-aligned procedures.
• Not offered for sale in some high-emission-regulation states.
• Verify state and local compliance prior to installation.
• Check vehicle-specific part compatibility to avoid noncompliant installs.

Who is this for: The FOMIUZY 2.5" high-flow front catalytic converter is aimed at vehicle owners, mechanics, and repair shops needing a cost-effective direct-replacement front catalytic unit with a reusable O2 sensor port. It suits drivers with 2.5" exhaust piping and an 11" front converter length who want a durable aluminized stainless-steel assembly that balances flow and filtration. If you’re matching OEM dimensions, checking part numbers, and prepared to clamp or weld for final sealing, this pair offers a lifetime-backed alternative to dealer pricing.