South Dakota Catalytic Converter Laws

Selling Catalytic Converters in South Dakota

If you’re looking to sell a catalytic converter in South Dakota, it’s important to know the legal requirements. While South Dakota doesn’t have the strictest converter laws in the country, the state does require scrap metal businesses to keep detailed records — especially for detached converters.

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What the South Dakota Law Says

Under South Dakota Codified Law § 34A-6-109, all detached catalytic converters are considered nonferrous metal property, and scrap metal dealers must record every sale — regardless of the purchase price.

Required records must include:

  • Seller’s full name, address, and signature
  • Date, location, and value of the transaction
  • Photocopy of the seller’s government-issued photo ID
  • Description and weight/volume of the converter
  • Name of the employee handling the sale

These records must be legible and available at the location of the transaction.

Additionally, SDCL § 32-15-17 enforces laws regarding exhaust systems. All vehicles must have working exhaust systems and mufflers — no illegal modifications (like muffler cut-outs) are permitted. This supports theft prevention by ensuring exhaust components remain intact and traceable.

Can You Still Sell Your Converter?

✅ Yes. As long as you legally own the converter and provide the required documentation, you can sell your catalytic converter in South Dakota.

At RRCats, we help you stay compliant with state law while getting the best price for your converter. Whether you’re an auto repair shop or a private seller, we’ll walk you through every step.

Selling to RRCats from South Dakota

Whether you’re in Sioux Falls or Spearfish, we make it easy to sell your used catalytic converter from anywhere in South Dakota. Here’s how:

  • Send us a photo of your converter and any serial numbers for a quick quote
  • Use our prepaid shipping kit or send it in your own box
  • Get paid securely via check, PayPal, or another traceable method
  • We handle the paperwork, and tracking — you just get paid

Need Help?

Not sure if your converter qualifies? Have questions about documentation or value? Visit our Cat Guide »

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Please fill out the form below or text us pictures to get a custom quote for your catalytic converter.

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Check corners, under shields, and down pipes for numbers. Not all catalytic converters have numbers.
Drag & Drop Files, Choose Files to Upload You can upload up to 10 files.
To get a quote sooner, attach photos of any serial numbers and an overhead pic of the catalytic converter(s).
Drag & Drop Files, Choose Files to Upload You can upload up to 3 files.
Upload a Photo: Please include a clear photo of one of the following documents: Vehicle or equipment, Registration, Title, or Bill of Sale. Why do we need this? We are required by law to verify proof of ownership before purchasing certain equipment or materials to prevent theft and ensure lawful transfer. For more details, refer to New Jersey Scrap Metal Laws – N.J.S.A. 13:1E-99.12 (or insert exact link to the statute you want to reference). This requirement is mandatory to receive a quote.

 

Who Is RRCats?

Nationwide catalytic converter buyers

Fair. Consistent. Reliable.

 

“Their online system works great. Verifying ID and proof of ownership worked smoothly and gave me confidence that I was dealing with a reputable company.”

~ Customer, Mike K.*

 

“Very fast service! I submitted my info for a quote and got it the next morning. The only thing that was slow about the process was me packing it all up to ship out!”

~ Customer, Steven C.*

 

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