GMC SIERRA 3500 HD Catalytic Converters

Catalytic Converter, OEM Grade, Federal/EPA Compliant, Direct-Fit, Chevy, GMC, 6.0L, Each

Part Number: MPE-21-252

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Catalytic Converter, Universal, 3-Way Style, Stainless Steel, Each

Part Number: MPE-51209

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Catalytic Converter, Cal-Cat Universal, 3.000 in. Slip Fit Inlet, 3.000 in. Slip Fit Outlet, Ceramic Honeycomb, Heat Shield, Universal, Each

Part Number: WLK-83509

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Catalytic Converter, CalCal Universal, One Inlet, 3 in., One Outlet, 3 in., Stainless Steel, Ceramic Honeycomb, Each

Part Number: WLK-83404

5.0 out of 5 stars ( 1 )

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Catalytic Converter, Stainless Steel, 3.00 in. Inlet, 3.00 in. Outlet, 8.75 in. Length, Universal, Each

Part Number: MPE-51659

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Catalytic Converter, Stainless Steel, Chevy, GMC, 6.0L, Each

Part Number: MPE-49644

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Estimated Ship Date: Dec 11, 2026 if ordered today

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Catalytic Converters, Universal, Stainless Steel Case, 3.000 in. Slip Fit Inlet/Outlet, 13.250 in. Overall Length, Each

Part Number: WLK-93239

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Catalytic Converters, Direct-Fit, Two Stock Flange Inlets, One Stock Flange Outlet, Ceramic Honeycomb Substrate, 59.00 in. Length, Chevy, GMC, Each

Part Number: APH-645154

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Estimated Ship Date: Dec 2, 2026 if ordered today

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Catalytic Converter, Direct Fit, Stainless Case, Chevy, GMC, Each

Part Number: WLK-50566

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Catalytic Converter, Stainless Steel, Chevy, GMC, 6.0L, Each

Part Number: MPE-51812

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Estimated Ship Date: Dec 14, 2026 if ordered today

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Catalytic Converter - Direct Fit

Part Number: APH-645123

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Estimated Ship Date: Dec 2, 2026 if ordered today

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CONVERTER ASM-OXIDN CTLTC

Part Number: ADO-12705096

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Estimated Ship Date: Today

• Core Charge $400.00
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Catalytic Converters, Direct-Fit, Two Stock Flange Inlets, One Stock Flange Outlet, Ceramic Honeycomb Substrate, 34.00 in. Length, Chevy, GMC, Each

Part Number: APH-645184

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Estimated Ship Date: Dec 1, 2026 if ordered today

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Catalytic Converters, Direct-Fit, Stock Flange Inlet/Outlet, 53.00 in. Overall Length, Chevrolet, GMC, Each

Part Number: APH-645809

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Estimated Ship Date: Dec 2, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-84721

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Ultra EPA Catalytic Converter

Part Number: WLK-14871

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Estimated Ship Date: Dec 10, 2026 if ordered today

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Catalytic Converter, California Grade, Direct-Fit, Stainless Steel Case, Chevy, GMC, 6.0L, Each

Part Number: MPE-4551252

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Estimated Ship Date: Dec 10, 2026 if ordered today

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Catalytic Converter, California Grade, Direct-Fit, Stainless Steel Case, Chevy, GMC, 6.0L, Each

Part Number: MPE-5451644

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Estimated Ship Date: Dec 10, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-84707

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Estimated Ship Date: Dec 10, 2026 if ordered today

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OEM Grade Direct-Fit Catalytic Converter

Part Number: MPE-280745

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Estimated Ship Date: Dec 10, 2026 if ordered today

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Catalytic Converter, California Grade, Universal, Stainless Steel Case, 10.750 in. Overall Length, 3.000 in. Inlet/Outlet, Each

Part Number: MPE-5582409

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Estimated Ship Date: Dec 10, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-84797

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Estimated Ship Date: Dec 11, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-84796

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Estimated Ship Date: Dec 11, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-83019

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Estimated Ship Date: Dec 11, 2026 if ordered today

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Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Chevrolet, GMC, Each

Part Number: WLK-50571

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Estimated Ship Date: Dec 11, 2026 if ordered today

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