MagnaFlow California Grade CARB Compliant Universal Catalytic Converter, 447209
In stock
$425.99
Listed as compatible with this vehicle by the retailer feed.
Check price2003 Chevrolet Silverado 1500HD Exhaust Systems
40 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Back to 2003 Chevrolet Silverado 1500HD parts
BRExhaust Direct-Fit Exhaust Front Pipe Kit, 107-0260
In stock
$472.99
Listed as compatible with this vehicle by the retailer feed.
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Flowtech EO Legal Headers, 91835FLT
In stock
$478.99
Listed as compatible with this vehicle by the retailer feed.
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Walker CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID), 83404
In stock
$537.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 24148
In stock
$556.99
Listed as compatible with this vehicle by the retailer feed.
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Flowtech Shorty Headers - Black Painted, 11142FLT
In stock
$559.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Universal Catalytic Converter, 447109
In stock
$571.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Universal Catalytic Converter, 445006
In stock
$603.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 49668
In stock
$679.99
Listed as compatible with this vehicle by the retailer feed.
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Flowtech Shorty Headers - Ceramic Coated, 31142FLT
In stock
$699.99
Listed as compatible with this vehicle by the retailer feed.
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JBA Performance 1850S-3 1 5/8" Header Shorty Stainless Steel 03-06 GM Truck/Hummer 6.0L
In stock
$718.99
Listed as compatible with this vehicle by the retailer feed.
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Walker Ultra EPA Direct Fit Catalytic Converter 3" Outlet (OD), 54899
In stock
$811.99
Listed as compatible with this vehicle by the retailer feed.
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JBA Performance 1850S-3Js 1 5/8" Header Shorty Stainless Steel 03-06 Gm Truck/Hummer 6.0L Silver Ceramic
In stock
$896.99
Listed as compatible with this vehicle by the retailer feed.
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Walker CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3" Outlet (ID), 81724
In stock
$936.99
Listed as compatible with this vehicle by the retailer feed.
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Felpro Exhaust Manifold Gasket Set Bolts Included, MSB 92467
Out of stock
$81.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter, 447283
Out of stock
$1,254.00
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.