Walker CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID), 82815
Out of stock
$624.99
Listed as compatible with this vehicle by the retailer feed.
Check price2006 Cadillac STS Exhaust Systems
25 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.