Walker Ultra EPA Direct Fit Catalytic Converter 2.5" Outlet (OD), 16386
In stock
$365.99
Listed as compatible with this vehicle by the retailer feed.
Check price2003 Buick LeSabre Exhaust Systems
28 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Back to 2003 Buick LeSabre parts
MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter, 4561333
In stock
$1,263.00
Listed as compatible with this vehicle by the retailer feed.
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BRExhaust Direct-Fit Exhaust System Kit, 106-0072
Out of stock
$363.99
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.