BUICK RIVIERA Catalytic Converters

Catalytic Converter, Stainless Steel, 2.50 in. Inlet, 2.50 in. Outlet, 15.0 in. Length, Universal, Each

Part Number: MPE-418006

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Cadillac, Chevy, Oldsmobile, Pontiac, 22.75 in. Length, 4.1, 5.0L

Part Number: MPE-23447

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 21, 2026 if ordered today

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Catalytic Converters, Direct-Fit, Stock Flange Inlet, 2.63 in. Slip Fit Outlet, 23.38 in. Overall Length, Buick, Oldsmobile, Pontiac, Each

Part Number: APH-645410

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Estimated Ship Date: Jan 16, 2026 if ordered today

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CATALYTIC CONVERTER

Part Number: WLK-81328

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Estimated Ship Date: Jan 26, 2026 if ordered today

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DIRECT-FIT CATALYTIC CONVERTER

Part Number: WLK-15817

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Universal, 2.5 in. Inlet/Outlet, 18 in. Length, Each

Part Number: WLK-15142

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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Converter - Direct Fit

Part Number: CTO-4890G

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Riviera, 3.8L, Each

Part Number: MPE-23404

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Each

Part Number: MPE-23400

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Catalytic Converters, Direct-Fit, Stock Flange Inlet, 2.50 in. Slip Fit Outlet, 23.00 in. Overall Length, Buick, Oldsmobile, Pontiac, Each

Part Number: APH-645357

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Oldsmobile, Pontiac, Car, 23.375 in. Length, Each

Part Number: CTO-4890

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 14, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-81327

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Estimated Ship Date: Jan 22, 2026 if ordered today

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Catalytic Converters, Universal, 2.50 in. Slip Fit Inlet/Outlet, Stainless Steel Case, Ceramic Honeycomb Substrate, 16.00 in. Overall Length, Each

Part Number: APH-608736

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Estimated Ship Date: Jan 19, 2026 if ordered today

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