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.
Check price2003 Buick Regal Exhaust Systems
26 products listed as compatible with this vehicle by the retailer feed.
Back to 2003 Buick Regal parts
Dorman Exhaust Manifold Crossover Pipe, 679-003
Out of stock
$450.99
Listed as compatible with this vehicle by the retailer feed.
Check price
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.