MagnaFlow California Grade CARB Compliant Universal Catalytic Converter, 5461206
In stock
$1,239.00
Listed as compatible with this vehicle by the retailer feed.
Check price2004 Buick Regal Exhaust Systems
29 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Back to 2004 Buick Regal parts
MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter, 4561396
In stock
$1,310.00
Listed as compatible with this vehicle by the retailer feed.
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Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 38.325 IN, 84585
In stock
$1,929.00
Listed as compatible with this vehicle by the retailer feed.
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Walker CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID), 84513
In stock
$2,038.00
Listed as compatible with this vehicle by the retailer feed.
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Dorman Exhaust Manifold Crossover Pipe, 679-003
Out of stock
$450.99
Listed as compatible with this vehicle by the retailer feed.
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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.