Typically, a Ford Excursion has two catalytic converters — one on each bank of the engine — but there are exceptions depending on the engine and any aftermarket changes.
Typical exhaust configurations by engine type
What follows is a quick breakdown by engine type and exhaust layout to illustrate common configurations found on Excursions produced from 1999 through 2005.
- Gasoline-powered Excursions (5.4L V8 or 6.8L V10): usually two catalytic converters, one placed near each bank of cylinders in the exhaust stream before the muffler.
- Diesel-powered Excursions (7.3L Power Stroke): typically two catalytic converters in stock setups, often a close-coupled unit near the engine and a second downstream unit as part of the main exhaust path.
In practice, two catalytic converters is the standard configuration for the Excursion across the main engine options.
Variations and considerations
Not every Excursion will have exactly two catalytic converters. Factors that can change the count include aftermarket exhaust upgrades, year-to-year variations in emissions equipment, and regional requirements.
- Aftermarket or modified exhaust: Some owners replace or remove catalytic converters, potentially reducing the count in certain setups, though removal is illegal in many jurisdictions and could fail emissions tests.
- Regional and model-year differences: While the majority of 1999–2005 Excursions use two catalysts, some markets or trims might have different layouts.
Thus, the stock configuration for most Excursions remains two catalytic converters, but always verify the exact vehicle to be certain.
Summary
For most Ford Excursions from 1999 through 2005, expect two catalytic converters—one for each exhaust bank on gasoline models, and typically two in the diesel Power Stroke variant as well. Variations can occur due to aftermarket changes or regional specifications, so check the actual vehicle if you need an precise count.