A Chevrolet Silverado catalytic converter scraps for roughly $80 to $286 per unit as of 21 August 2026, with V8 after-cat units most commonly quoted at $125–$225 each. Because nearly every Silverado carries two main converters and often two smaller pre-cats, a complete truck typically yields $250 to $600 total, and occasionally more on a clean, well-stamped late-model V8. Duramax diesel trucks are graded on a completely separate scale and can beat all of that.
| Grade / Item | Low | High | Unit |
|---|---|---|---|
| Main after-cat, V8 | $80 | $286 | USD/unit |
| Main after-cat, 4.3L V6 | $100 | $192 | USD/unit |
| Pre-cat / manifold unit | $20 | $100 | USD/unit |
| Duramax DOC | $15 | $511 | USD/unit |
| Duramax DPF | $30 | $806 | USD/unit |
| Aftermarket replacement | $5 | $50 | USD/unit |
| Country | Typical Range | Per Tonne | Cur. |
|---|---|---|---|
| United States | $50 – $450 /unit (typical OEM) | — | USD |
| Canada | C$65 – C$600 /unit | — | CAD |
| United Kingdom | £40 – £350 /unit | — | GBP |
| Germany / EU | €45 – €400 /unit | — | EUR |
| Australia | A$75 – A$650 /unit | — | AUD |
| India | ₹4,000 – ₹35,000 /unit | — | INR |
| UAE / Dubai | 180 – 1,600 AED /unit | — | AED |
How many converters a Silverado actually has
This is where most money gets left behind. People pull the two obvious under-floor units, cash out, and walk away from two more parts still bolted to the engine.
- Main after-cat converters: two on essentially every gasoline Silverado, V6 and V8 alike — one per exhaust bank, mounted under the floor downstream of the manifolds.
- Pre-cats (close-coupled units): smaller converters mounted at or immediately behind the exhaust manifolds. Common on later trucks running tighter emissions calibrations.
- Total per truck: GM vehicles run 2 to 4 converters across the range. On a Silverado, assume two and check forward for two more before you call the job done.
The 4.3L V6 is not a single-converter truck. It runs two banks and two main converters, same as the V8. What changes between V6 and V8 is the loading inside each unit, not the count.
Pre-cat versus after-cat, and why they price differently
They are graded as separate products and you should quote them separately.
| Position | Grading class | Range, 21 Aug 2026 | What to know |
|---|---|---|---|
| Main after-cat, V8 | Large GM | $80–$286 | The money units. Must be full of core to hold the Large grade. |
| Main after-cat, 4.3L V6 | Large GM / GM Medium | $100–$192 typical | Often grades one class down from the V8 unit on the same year truck. |
| Pre-cat / manifold unit | Pre-Domestic | $20–$100 | Small and easy to miss. Two of them is real money. |
| Duramax diesel unit | Diesel Cat | $15–$511 | Enormous spread. Never accept a flat quote on one. |
| Duramax DPF | DPF | $30–$806 | Separate part from the converter. Sold separately. |
| Aftermarket replacement | Aftermarket | $5–$50 | Very common on high-mileage Silverados. Check before hauling. |
A pre-cat at $60 does not feel worth the wrench time until you notice there are two of them and they add $40 to $200 to a truck you were already stripping.
Value by generation and engine
Published sources do not quote Silverado converters by individual model year — buyers price the stamped serial, not the build date. What follows maps engine and generation onto the grading classes those buyers actually use, so you know which bucket your unit should land in before you negotiate.
| Generation | Years | Engines | Expected per-unit range |
|---|---|---|---|
| GMT800 | 1999–2007 | 4.3L V6, 4.8L / 5.3L / 6.0L V8 | $80–$250 |
| GMT800 HD | 2001–2007 (2500/3500) | 6.0L, 8.1L V8 | $120–$286 |
| GMT900 | 2007–2013 | 4.3L V6, 4.8L / 5.3L / 6.0L V8 | $100–$286 |
| K2XX | 2014–2018 (2015–2019 HD) | 4.3L V6, 5.3L / 6.2L V8 | $100–$250 |
| T1XX | 2019–present | 4.3L V6, 5.3L / 6.2L V8 | $90–$225 |
Two things to take from that table. First, newer is not automatically better. Automakers substituted cheaper platinum for palladium and rhodium over the last several years, so the newest trucks do not carry the richest loading. Mid-2000s through early-2010s GM truck units often outpay a 2021 truck.
Second, the ranges overlap heavily on purpose. Condition and serial legibility move a converter between grades more than model year does.
4.3L V6 against 5.3L and 6.0L V8
- The 5.3L V8 is the volume engine and the benchmark. Its after-cat units are the ones quoted at $125–$225 each in current 2026 market data.
- The 6.0L V8, mostly in 2500HD and 3500 trucks, feeds larger-bodied converters and sits at the top of the Large GM band.
- The 4.3L V6 moves less exhaust volume and its converters carry lighter loading. Expect roughly 20 to 30 percent under the equivalent 5.3L unit, which usually means Medium GM grading rather than Large.
- The 8.1L V8 in older 2500HD and 3500 trucks runs large-body units worth checking individually.
1500 against 2500 and 3500
The half-ton and heavy-duty trucks diverge more than the badge suggests.
- Silverado 1500: two main gasoline converters, Large GM grading on V8s. The most predictable of the three.
- Silverado 2500HD gasoline: 6.0L and 8.1L units run physically larger converters that consistently grade at the top of the Large GM band.
- Silverado 2500HD and 3500 Duramax: a different market entirely. Diesel converters run $15–$511 and the DPF is a separate $30–$806 part. That total can exceed a whole gasoline truck — but the spread is so wide that a flat quote is almost always a bad one.
- 3500 chassis cab and dually: exhaust routing varies by body configuration. Count the units on the actual truck rather than assuming.
What is inside a Silverado converter
A Silverado unit typically holds around 5 grams of platinum, 3 to 5 grams of palladium, and up to 2 grams of rhodium. Against 21 August 2026 spot prices, that is why the truck is worth stripping:
| Metal | Spot, 20–21 Aug 2026 | Typical content | Year on year |
|---|---|---|---|
| Platinum | $1,706–$1,816/oz | about 5 g | up about 35% |
| Palladium | $1,280–$1,339/oz | 3–5 g | up about 22% |
| Rhodium | $8,499–$8,800/oz | up to 2 g | up about 18% |
Two spot figures are shown per metal because two sources one day apart disagreed by up to 6 percent. Rhodium is the swing factor — two grams at roughly $8,500 an ounce is what separates a $90 converter from a $290 one.
Reading the serial on a Silverado unit
GM stamps roughly 90 percent of its converters and does not hide the code under a secondary shield. On a Silverado, look for a 7 to 10 digit numeric code in two places: a corner of the converter body, and stamped into the main heat shield toward the middle. GM and AC Delco stamps commonly begin 126, 127, 253 or 255.
Clean the area with steel wool. Never grind. An unreadable serial forces the buyer into bucket pricing, and the bucket is always the low end of the range.
If the unit has no GM-format stamp at all, it is very likely an aftermarket replacement — extremely common on Silverados past 150,000 miles — and worth $5 to $50 rather than $200.
Getting the best number on a Silverado
- Quote every unit separately by serial. Four converters off one truck can span four different grading classes.
- Do not let a buyer price the truck. A quote of three hundred dollars for the Silverado cats without reading serials is a bucket rate on parts that may be worth double.
- Keep cores intact. A rattling or hollowed unit drops out of Large GM grading immediately.
- Check forward of the manifolds before scrapping the shell. Two pre-cats are easy to overlook and worth up to $200 together.
- Sell diesel units on assay only. The $15 to $511 diesel band is too wide to trust any flat offer.
- Get three quotes. Published Large GM prices ranged from $80 to $286 on the same day this month.
Generation bands in the table above are mapped from published class prices, not quoted per model year, because buyers price the stamped serial rather than the build date. Prices move daily and no yard is required to honour any published list.