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.
Check price2001 GMC Sierra 2500HD Exhaust Systems
87 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Back to 2001 GMC Sierra 2500HD parts
aFe POWER High-Flow Exhaust Manifold for Improved Performance, 46-40024
In stock
$689.99
Listed as compatible with this vehicle by the retailer feed.
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Walker Ultra EPA Direct Fit Catalytic Converter 3" Outlet (OD), 53726
In stock
$741.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 93480
In stock
$744.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Direct Fit Exhaust Manifold: with Heat Shield, 674-728
In stock
$779.99
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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MagnaFlow Street Series Cat-Back Performance Exhaust System, 15829
In stock
$999.99
Listed as compatible with this vehicle by the retailer feed.
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GM Genuine Parts Exhaust Manifold Gasket, 12617944
In stock
$19.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Exhaust Manifold Heat Shield, 674-736HS
In stock
$92.99
Listed as compatible with this vehicle by the retailer feed.
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MAHLE Original EGR Valve Gasket, F31902
Out of stock
$7.99$6.35Listed as compatible with this vehicle by the retailer feed.
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MAHLE Original Exhaust Manifold Gasket Set, MS16124
Out of stock
$36.99
Listed as compatible with this vehicle by the retailer feed.
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Felpro Exhaust Gas Recirculation (EGR) Gasket Set, ES 73503
Out of stock
$73.99
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 OEM Grade Federal / EPA Compliant Universal Catalytic Converter, 51659
Out of stock
$308.99
Listed as compatible with this vehicle by the retailer feed.
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MAHLE Original Exhaust Pipe Gasket, F31903
Out of stock
$9.99
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.