Typically two catalytic converters—that is, a close-coupled pre-cat near the engine and a downstream secondary cat. Some markets, engines, or model years may use a single catalytic converter or a different dual-cat arrangement; verify for your exact vehicle.
The Ford Focus SE has evolved across generations and regions, with exhaust configurations that reflect emissions rules and engine choices. This article explains the common setups and how to confirm the number on your car.
Common configurations for Focus SE
Below are the setups you’re most likely to encounter, depending on year, region, and engine.
- Most North American Focus SE models with the 2.0L Duratec/Zetec engine use two catalytic converters: a close-coupled pre-cat near the exhaust manifold and a downstream main catalyst.
- In some European and other international markets, there are variants that use a single catalytic converter, or a different dual-cat arrangement, to meet local emissions standards.
Note that individual car configurations can vary. Always confirm with the vehicle’s VIN or official documentation.
How to verify on your vehicle
When in doubt, perform a straightforward check of the exhaust system and consult the official sources.
- Park on a level surface and ensure the exhaust is cool before you inspect.
- From the engine side toward the rear, look for two separate catalytic converter units (two metal cans) or a single unit if only one cat is present.
- Check for sensors: dual-cat setups typically have oxygen sensors placed before and after each converter or at least before the first and after the last converter.
- Cross-check with the VIN and the owner’s manual or a dealer/service diagram to confirm the exact configuration for your car.
If you cannot clearly identify two distinct converters, rely on documentation or a professional inspection to determine the correct configuration for your Focus SE.
Summary
For most Ford Focus SE models sold in North America, the exhaust system includes two catalytic converters, arranged as a pre-cat near the engine and a downstream converter. Regional variations exist, and some markets or engine configurations may use a single cat. Always verify with official documentation or by inspecting the vehicle to avoid confusion.