How many catalytic converters does a Subaru Legacy have?
Two catalytic converters. In most Legacy models, one is close to the exhaust manifold and a second is farther downstream in the exhaust system.
Typical exhaust layout across most Legacy models
The standard layout for many generations of the Legacy places two catalytic converters in the exhaust path to optimize emissions control while keeping the system relatively compact.
- Close-coupled catalytic converter positioned near the exhaust manifold to begin emissions reduction as soon as the engine warms up.
- Secondary catalytic converter located downstream in the mid-pipe to further reduce pollutants before exhaust gases exit the vehicle.
In practice, this two-cat arrangement is the norm for the majority of Legacy models across common engine families and markets.
Variations by engine and year
There are occasional differences depending on the engine choice and regional specifications. The number of catalytic converters in the typical Legacy setup generally remains two, but placement and particular exhaust routing can vary.
- Engine types involved: models with the 2.5-liter four-cylinder and those with larger flat-six configurations typically employ two catalytic converters.
- Performance and market variations: certain trims or regional versions may feature different exhaust routing, sensors, or heat shields, but the overall count often stays at two.
For a precise count on a specific year and engine, consult the factory service information or inspect the undercarriage for the exact model configuration.
Maintenance and diagnostic considerations
Understanding the two-catalyst arrangement helps with diagnostics, replacement planning, and emissions-related inspections. If a converter fails or becomes restricted, signs can include a check engine light, reduced performance, unusual exhaust noise, or higher emissions readings.
Bottom line
In the vast majority of Subaru Legacy models, there are two catalytic converters in the exhaust system—one close to the engine and one further downstream. Always verify for a specific year and engine variant to be certain.
Summary
Two catalytic converters are standard for most Subaru Legacy configurations, with variations mainly in placement or regional specifications. For an exact count on a particular vehicle, refer to the owner's manual or factory service documentation for that model year.
Why are Subaru catalytic converters worth so much?
Catalytic converters have economic value as they contain precious metals. This is the main reason why they are sold as the most expensive scrap. Because it contains rhodium, palladium and platinum, which are among the most precious metals.
What is the most common problem with Subaru Legacy?
Top Subaru Legacy Problems
- Cooling System Problems Cause Head Gasket Failure.
- Subaru Front O2 Sensor Recall.
- Failure in ABS causes pump to run continuously and wear down battery.
- Failure in ABS causes pump to run continuously and wear down battery.
- Engine Oil May Leak From Camshaft/Crankshaft Front Seals.
How much is a catalytic converter for a Subaru Legacy?
Advance Auto Parts has 75 different Catalytic Converters for your vehicle, ready for shipping or in-store pick up. The best part is, our Subaru Legacy Catalytic Converters start from as little as $83.99.
How many catalytic converters are in a Subaru Legacy?
Most Subarus Have Two Catalytic Converters
Subaru catalytic converters are commonly part of a dual-cat system, where one unit is smaller and the other has a more rounded, bean-like shape.
