Catalytic Converter for Ford Focus (2000-2004) 2.0L Front

Direct-Fit Front Catalytic Converter for 2000-2004 Ford Focus (C170)

What it Does: The direct-fit front catalytic converter replaces the clogged or degraded factory converter on the 2000-2004 Focus to eliminate P0420 trouble codes and restore factory exhaust gas scavenging.

The Stock Ford Focus Exhaust Flow Restriction

In the first-generation C170 chassis, the close-coupled factory front converter is subjected to severe thermal cycling and engine vibration. Over time, the stock ceramic core experiences substrate breakdown, micro-fracturing, and washcoat sintering. This thermal degradation chokes exhaust throughput, increases manifold backpressure, reduces fuel economy, and triggers continuous catalyst efficiency DTCs (such as P0420) from altered post-cat oxygen sensor signals.

The Engineering Solution

Constructed from high-grade stainless steel, this direct-replacement assembly features an optimized ceramic honeycomb substrate washcoated with catalytic precious metals to promote rapid light-off and chemical reduction of HC, CO, and NOx. Designed specifically for the Zetec 2.0L platform, it incorporates heavy-duty, robotically welded flanges that mate to the factory exhaust manifold downpipe without cutting or custom fabrication. Factory-positioned oxygen sensor bungs ensure uninhibited exhaust monitoring and seamless closed-loop ECU fuel trimming.

Technical Specifications

Compatibility

• 2000-2004 Ford Focus SE (2.0L 4-Cylinder)
• 2000-2004 Ford Focus ZTS (2.0L 4-Cylinder)
• 2000-2004 Ford Focus ZX3 (2.0L 4-Cylinder)
• 2002-2004 Ford Focus ZX5 (2.0L 4-Cylinder)
• 2002-2004 Ford Focus ZTW (2.0L 4-Cylinder)
• Excludes: Base, LX (SPI SOHC), and SVT models

Frequently Asked Questions

Does this fit the C170 Focus?

Yes, this is a direct fit for the 2000-2004 Ford Focus equipped with the 2.0L Zetec engine.

Will this clear my P0420 check engine light?

Yes, replacing a deteriorated factory unit with this catalytic assembly restores proper catalyst efficiency and allows the secondary O2 sensor to read within OE threshold limits.

The Ford Daily-Driven Standard

Built to handle the demands of everyday commuting, this assembly delivers OE-grade fitment, structural heat resistance, and reliable emissions compliance without costly custom fabrication.