BUICK RIVIERA Exhaust

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: Nov 27, 2026 if ordered today

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Catalytic Converter, California Grade CARB Compliant Direct-Fit Catalytic Converter, Stainless Steel, Buick, Cadillac, Chevy, Pontiac, Each

Part Number: MPE-3322447

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Estimated Ship Date: Dec 7, 2026 if ordered today

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Muffler, SoundFX, 2 1/2 in. Inlet/2 1/4 in. Outlet, Steel, Aluminized, Buick, Cadillac, Chevy, GMC, Each

Part Number: WLK-18409

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 7, 2026 if ordered today

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Exhaust Pipes, Direct-Fit Intermediate Pipes, Stainless Steel, Natural, 2.500 in. O.D., Buick, Pontiac, Each

Part Number: BRE-107-0023

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Estimated Ship Date: Jan 4, 2027 if ordered today

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Catalytic Converter, California Grade CARB Compliant Universal Catalytic Converter, Stainless Steel, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: MPE-3322015

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Estimated Ship Date: Dec 7, 2026 if ordered today

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Catalytic Converters, California Compliant, Direct-Fit

Part Number: MPE-3322431

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Estimated Ship Date: Dec 7, 2026 if ordered today

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Muffler, OE Replacement, Steel, Aluminized, Buick, Cadillac Oldsmobile, Pontiac, V6, V8, Each

Part Number: APH-3439

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Muffler, MSL, Buick, Cadillac, Oldsmobile Pontiac, Each

Part Number: APH-6578

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Oldsmobile, Pontiac, Passenger Car, 3.8L, Each

Part Number: MPE-23464

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Estimated Ship Date: Dec 8, 2026 if ordered today

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MANIFOLD PRESSURE SENSOR

Part Number: HLN-2MAP0256

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Estimated Ship Date: Nov 23, 2026 if ordered today

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

Part Number: WLK-15042

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Estimated Ship Date: Dec 8, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Cadillac, Oldsmobile, Pontiac, 25.0 in. Length, V6, V8, Each

Part Number: MPE-23223

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Estimated Ship Date: Dec 9, 2026 if ordered today

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MANIFOLD PRESSURE SENSOR

Part Number: HLN-2MAP0078

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Muffler, OE Replacement, Steel, Aluminized, Buick, Cadillac, Oldsmobile, V6, V8, Each

Part Number: APH-3588

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Pontiac, 38.375 in Length, 3.8L, Each

Part Number: CTO-4975

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Estimated Ship Date: Nov 23, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Universal, 2.00 in. Inlet/Outlet, 16 in. Length, Each

Part Number: MPE-94014

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Estimated Ship Date: Dec 8, 2026 if ordered today

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CalCat CARB Catalytic Converter

Part Number: WLK-81322

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Estimated Ship Date: Dec 8, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Universal, 2.25 in. Inlet/Outlet, 16 in. Length, Each

Part Number: MPE-94015

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Estimated Ship Date: Dec 8, 2026 if ordered today

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Catalytic Converter, Universal Catalytic Converter - 3in.

Part Number: MPE-448309

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Estimated Ship Date: Dec 7, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Buick, Oldsmobile, Pontiac, 37.375 in. Length, 3.8L, Each

Part Number: MPE-23422

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 7, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Each

Part Number: MPE-23400

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Estimated Ship Date: Dec 8, 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: Nov 30, 2026 if ordered today

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Catalytic Converters, Direct-Fit, Stock Flange Inlet, 2.50 in. Slip Fit Outlet, 38.38 in. Overall Length, Buick, Oldsmobile, Pontiac, Each

Part Number: APH-642706

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Estimated Ship Date: Nov 27, 2026 if ordered today

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Resonator, Round, Steel, Aluminized, 2.25 in. Center Inlet, 2.50 in. Center Outlet, Buick, Chevy, Pontiac

Part Number: WLK-21687

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Estimated Ship Date: Dec 7, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Universal, 2.50 in. Inlet/Outlet, 16 in. Length, Each

Part Number: MPE-93506

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Estimated Ship Date: Dec 7, 2026 if ordered today

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