Catalytic converter scrap price: what sets it
A catalytic converter's scrap price comes from the platinum, palladium and rhodium inside it, how much of each that particular converter carries, and where those metal prices sit. For most Chicago car owners the practical question is different: what the converter adds to the car it's bolted to. This note from Smart Scrap Metal Buyers, a Chicago scrap car buyer, covers both, plus the Illinois law on loose converters. We don't buy detached converters.
What makes a catalytic converter’s scrap price?
A catalytic converter's scrap price is set by the precious metals inside it: platinum, palladium and rhodium. What matters is how much of each that converter carries, which varies from one design to another, and what those metals are selling for. Two converters that look alike on the outside can hold very different amounts and fetch very different prices.
The steel shell isn’t where the value is. The catalyst inside is.
What’s inside: platinum, palladium and rhodium
A catalytic converter is an emissions control device in the exhaust, usually placed close to the engine, often right after the exhaust manifold. Inside, a catalyst coating does the chemistry that cleans up exhaust gas, and that coating is where the platinum-group metals are. When a converter is recycled, those metals are extracted.
Illinois law uses the same three metals to define the part. Since January 1, 2025, the Recyclable Metal Purchase Registration Law says a “catalytic converter” includes nonferrous parts, “including rhodium, platinum, and palladium,” and defines a “detached catalytic converter” as one that was installed on a vehicle and later removed.
Why converter prices swing
Because the value is almost all precious metal, converter scrap prices move with platinum, palladium and rhodium prices. Those markets can move a long way in a short time. That’s the main reason online price guides disagree with each other, and why a figure quoted even a few months ago can be well off today.
What the converter adds to a scrap car
For a car owner, a converter on the car and a converter on its own are different things. On the car, it’s one of the parts that makes a complete scrap car worth more than a stripped one, next to the engine, transmission and aluminum wheels. It’s priced into the offer. You don’t have to know its part number or its metal content; you just have to leave it where it is.
If it’s already gone, stolen or removed, tell us on the call. The offer will reflect it, and it’s better to know before the truck arrives. Our page on scrap car prices in Chicago lists the other parts that move an offer.
Can you sell a catalytic converter on its own in Illinois?
For most people, no. Here’s what the Recyclable Metal Purchase Registration Law (815 ILCS 325) says:
| Rule | What it means | Section |
|---|---|---|
| Selling a detached converter | It’s a violation for anyone to sell a converter, or its contents, that isn’t attached to a motor vehicle, unless the seller is a licensed automotive parts recycler or scrap processor. | 4.1(a)(4) |
| Buying a detached converter | Only a licensed recyclable metal dealer may buy one, at the dealer’s fixed business address, and only with the required records. | 4.4(a) |
| Paying for it | A buyer can’t pay cash for a converter or its contents worth $100 or more. | 4.4(b) |
| Records | The buyer records the VIN of the vehicle it came from, the converter’s markings, and a copy of the title or uniform invoice showing the seller owned that vehicle. | 3 |
Some of this is older than 2025: the attached-to-a-vehicle rule and the no-cash rule came in 2022, and Public Act 103-0677 added the fixed-address requirement and the extra record items from January 1, 2025.
The practical upshot: if you own a car with a converter on it, the straightforward legal route is to sell the car with the converter still attached.
Why we don’t buy loose converters
Smart Scrap Metal Buyers is a service-area business with no fixed yard, and we don’t buy detached catalytic converters or any other loose metal from the public. We buy whole junk, wrecked and scrap cars. If your car still has its converter, it’s part of what we pay for. Start with scrap car recycling in Chicago, or see how much steel, aluminum and copper is in a car for the rest of what’s on board.
Don’t cut it off
Taking a converter off a car you’re about to scrap rarely makes sense. In Illinois it leaves you holding a part most people can’t legally sell, and it lowers the offer on the car it came from.