2003 CADILLAC Exhaust

Headers, Long Tube One-Piece, 1 5/8 in. Primaries, Round Port, 3 in. Collectors, 2 1/2 in. Reducers, Steel, Natural, Cadillac, Chevrolet, GMC, Pair

Part Number: HED-69720

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Headers, Cat4ward, Stainless Steel, Natural, 1-5/8 in. Primary Tubes, Cadillac, Chevy, GMC, SUV, Pickup, 4.8, 5.3L, Pair

Part Number: JBA-1850S-2

4.57 out of 5 stars ( 14 )

Estimated Ship Date: Today

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Headers, Cat4ward, Stainless Steel, Natural, Cadillac, Chevy, GMC, Hummer, SUV, Pickup, 6.0L, Pair

Part Number: JBA-1850S-3

4.77 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Headers, Street, Shorty, Steel, Silver Ceramic Coated, Cadillac, Chevy, GMC, Hummer, Small Block LS, Pair

Part Number: HED-69696

3.89 out of 5 stars ( 9 )

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Catalytic Converter, Direct Fit, Stainless Steel, Cadillac, Chevy, GMC, Each

Part Number: MPE-51097

4.5 out of 5 stars ( 2 )

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Headers, Shorty, Steel, Ceramic Coated, Cadillac, Chevy, GMC, 4.8, 5.3L, Pair

Part Number: BBK-40050

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Exhaust Manifolds, BD Diesel Exhaust Manifolds, High Silicon Ductile Iron, Chevrolet, GMC, Cadillac, Hummer, Sold as a Pair

Part Number: BDD-1041400

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Headers, Full-Length, Steel, Silver Ceramic Coated, Cadillac, Chevrolet, GMC, Pair

Part Number: HED-69726

5.0 out of 5 stars ( 1 )

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Catalytic Converter, Direct Fit, Stainless Steel, Cadillac, Chevy, GMC, Each

Part Number: WLK-83482

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

• Oversize $54.99

Catalytic Converter, Stainless Steel, Cadillac, GMC, 6.0L, Passenger Side, Each

Part Number: MPE-93602

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Estimated Ship Date: May 11, 2026 if ordered today

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Headers, Full-Length, Steel, Black Ceramic Coated, Cadillac, Chevrolet, GMC, Pair

Part Number: HED-69723

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Headers, Street, Shorty, Steel, Black Ceramic Coated, Cadillac, Chevy, GMC, Pair

Part Number: HED-69683

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Estimated Ship Date: Jul 3, 2026 if ordered today

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EPA OBDII Direct Fit Converter

Part Number: CTO-9444

1.0 out of 5 stars ( 1 )

Estimated Ship Date: May 11, 2026 if ordered today

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Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Slip Fit Outlet, Ceramic Honeycomb, Heat Shield, Cadillac, Each

Part Number: WLK-16686

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Estimated Ship Date: Today

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Catalytic Converter, Stainless Steel, Cadillac, 3.2L, Passenger Side, Each

Part Number: MPE-51137

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Catalytic Converter, Cal-Cat Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Heat Shield, Cadillac, Chevrolet, GMC, Each

Part Number: WLK-83457

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Estimated Ship Date: May 12, 2026 if ordered today

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Catalytic Converter, Cal-Cat Direct Fit, Stock Flange Inlet, Slip Fit Outlet, Ceramic Honeycomb, Cadillac, Chevrolet, GMC, Each

Part Number: WLK-83497

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Estimated Ship Date: May 14, 2026 if ordered today

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Converter - Direct Fit

Part Number: CTO-9267

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Estimated Ship Date: May 11, 2026 if ordered today

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Catalytic Converters, Direct-Fit, Stock Flange Inlet, 2.09 in. Slip Fit Outlet, 60.00 in. Overall Length, Cadillac, 4.6L, Each

Part Number: APH-645999

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Estimated Ship Date: May 11, 2026 if ordered today

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Catalytic Converter, Stainless Steel, Cadillac, 6.0L, Driver Side, Each

Part Number: MPE-51878

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Estimated Ship Date: May 11, 2026 if ordered today

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Catalytic Converter, Ceramic Honeycomb Substrate, 16.250 in. Overall Length, Buick, Chevy, GMC, Olds, Pontiac

Part Number: WLK-82637

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Estimated Ship Date: May 12, 2026 if ordered today

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