Do any cars have 2 catalytic converters?
Yes. Many cars use two catalytic converters, typically arranged as a close-coupled pre-cat plus a downstream main converter, or as one converter per bank in V- or W-engine configurations.
Common two-cat configurations
Car makers deploy two catalytic converters in several common layouts to balance emissions performance, heat management, and underbody packaging. The following are the patterns you’re most likely to encounter:
- Close-coupled (pre-cat) near the exhaust manifold paired with a downstream main catalytic converter.
- One catalytic converter per bank on V- or W-engine configurations (two catalysts total).
- Two separate converters along the exhaust path on some inline engines (less common, used to meet specific regulatory targets).
Different models may combine other components such as oxygen sensors at multiple points, but these are the core two-cat configurations you'll see in production vehicles today.
Why automakers use two catalytic converters
Two converters help reduce emissions more efficiently across the engine's operating range. A pre-cat speeds up emissions control during cold starts, while the downstream catalyst handles the majority of processing once the exhaust reaches operating temperature. In V engines, a cat per bank helps optimize flow and thermal management for each bank of cylinders.
Indicators of a dual-cat layout
Two catalytic converters are usually accompanied by multiple oxygen sensors placed before and after each converter, and the exhaust path will clearly show two discrete catalytic units in the undercarriage. A service manual or VIN decoding can confirm the exact count for a given vehicle.
Maintenance and replacement considerations
As with any catalytic converter, a dual-cat system requires proper maintenance. Faulty oxygen sensors, exhaust leaks, or engine misfiring can damage catalysts. When replacing, technicians must address sensors, heat shielding, and mounting hardware for each converter, which can affect labor cost and time.
Summary
In short, yes—cars can have two catalytic converters. The configuration varies by engine layout and regulatory demands, with common patterns including a close-coupled pre-cat plus a downstream main cat, or one cat per bank in V-configured engines. If you're unsure about your vehicle, consult the owner's manual or a qualified technician to confirm the exact setup.
What cars have two catalytic converters?
Engine size and type: Larger engines often have two separate exhaust banks, each with its own catalytic converter. Exhaust system design: Vehicles with dual exhaust systems have two converters, one for each pipe.
What is the scrap value of a catalytic converter?
The scrap value of a catalytic converter varies significantly, but can range from under $50 to over $1,000, depending on the car's make and model, the precious metals inside, and the current market price. The most accurate value comes from professional recyclers who analyze the converter's contents.
Factors that determine the scrap value
- Precious metal content: Catalytic converters contain valuable precious metals like platinum, palladium, and rhodium. The concentration of these metals is the primary factor in determining value.
- Type of converter: The size and origin of the converter play a large role. For example, converters from certain high-end or hybrid vehicles are often worth more than those from standard domestic or aftermarket units.
- Manufacturer and model: The specific make and model of the vehicle can indicate the type of converter and its potential value.
- Market demand: The price of precious metals fluctuates based on global market trends.
- Condition: The converter must be intact, with the ceramic honeycomb inside undamaged, to receive the highest value. A broken converter will be worth less.
How to get an accurate quote
- Contact a professional recycler: To get the most accurate price, contact a reputable buyer who can assess the converter's serial number and brand markings.
- Do not open it: Scrapyards and buyers prefer to receive the converter whole so they can accurately grade the metals inside.
- Have identification ready: You will need a valid ID to sell a catalytic converter to a recycler.
Where are the two catalytic converters located?
If there's a catalytic converter located near (or integrated into) the exhaust manifold, it's often referred to as the “pre-cat”, and the converter located closest to the muffler is referred to as the “main cat”.
Does a car still run without one of the two catalytic converters?
If your catalytic converter has been stolen or you bypass it because it's been having problems, your vehicle will still work. However, without a converter, your car lets out harmful emissions, including carbon monoxide and nitrogen oxides.
