2003 GMC SIERRA 1500 Exhaust

Muffler, Super Turbo, 3 in. Inlet/Dual 2 1/2 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-17674

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

• $10 Summit Bucks on $100 spent*

Catalytic Converter, Direct Fit, Stainless Case, Ceramic Substrate, Cadillac, Chevy, GMC, Each

Part Number: FLO-2010019

4.63 out of 5 stars ( 79 )

Estimated Ship Date: Today

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Catalytic Converter, Direct-Fit, Stainless Steel, Chevy, GMC, 4.8, 5.3L, Each

Part Number: WLK-50511

4.39 out of 5 stars ( 28 )

Estimated Ship Date: Today

• Oversize $54.99

Muffler, Super 50 Series, 3 in. Inlet/3 in. Outlet, Steel, Black, Aluminized, Each

Part Number: FLO-53057

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Heat Protection, Spark Plug Boot Heat Shields, Heat Resistant Polyimide Film Insert, Straight, Aluminum, Silver, 2 3/8 in. Long, LS/LT, Set of 8

Part Number: SUM-889505

Not Yet Reviewed

Estimated Ship Date: Today

Tail Pipe Extension LH/RH 94-03 Ram 1500, 87-03 Ford Truck Fullsize

Part Number: WLK-53068

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: HED-69723

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

Part Number: BIG-91836-1FLT

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Estimated Ship Date: May 11, 2026 if ordered today

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Exhaust System, Installer Series, Cat-Back, Steel, Passenger Side Exit, Aluminized, Chevy, GMC, 4.8L, 5.3L, Kit

Part Number: MBR-S5014P

4.62 out of 5 stars ( 29 )

Estimated Ship Date: Today

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Exhaust System, Cat-back, FlowFX, 409 Stainless Steel, Dual Exit, Chevrolet, GMC, Kit

Part Number: FLO-717924

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Flange Manifold 5.3/6.0L CHEVY/GMC Truck Manifold Flange-Drivers 2.500" ID Hole

Part Number: STW-FLCD-2-5

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Headers, Shorty, Steel, Temporary non-high, Temperature Paint, Pair

Part Number: BIG-11143FLT

3.57 out of 5 stars ( 7 )

Estimated Ship Date: May 11, 2026 if ordered today

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Exhaust Systems, Direct-Fit, Cat-back, Single, Steel, Aluminized, Side Exit, Chevrolet, GMC, Kit

Part Number: BRE-106-0713

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Muffler, Big Block II 70 Series, 3 in. Inlet/3 in. Outlet, Steel, Black, Each

Part Number: FLO-53072

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Catalytic Converter, California Grade, Direct-Fit, Stainless Steel Case, Chevy, GMC, 4.3L, 4.8L, 5.3L, Each

Part Number: MPE-4451419

Not Yet Reviewed

Estimated Ship Date: May 15, 2026 if ordered today

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Mufflers, Direct Fit SoundFX, Steel, Aluminized, 29.000 in. Overall Length, Chevy, GMC, Each

Part Number: WLK-18823

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

Exhaust Clamps, Extra Heavy-Duty U-Clamps, U-bolt Clamp Style, 0.500 in. Clamp Width, 2.750 in. Pipe Diameter, Steel, BMW, Chevy, Chrysler, Ford, Each

Part Number: APH-H234

Not Yet Reviewed

Estimated Ship Date: Today

Muffler, Ultra Flo Welded, 3 in. Inlet/Dual 2 1/2 in. Outlet, Stainless Steel, Each

Part Number: WLK-17228

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Headers, Shorty, Steel, Temporary Black Paint, Chevy, GMC, Pair

Part Number: BIG-11142FLT

Not Yet Reviewed

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Headers, Cat4ward, Stainless Steel, Silver Ceramic Coated, Chevy, GMC, Pickup, 4.3L, Pair

Part Number: JBA-1842S-9JS

5.0 out of 5 stars ( 2 )

Estimated Ship Date: May 18, 2026 if ordered today

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Exhaust, Tail Pipe, Steel, Aluminized, 2.750 in., Chevrolet, GMC, Each

Part Number: BRE-102-7921

Not Yet Reviewed

Estimated Ship Date: May 20, 2026 if ordered today

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Heat Protection, Spark Plug Boot Heat Shields, Heat Resistant Polyimide Film Insert, Straight, Aluminum, Red, 2 3/8 in. Long, LS/LT, Set of 8

Part Number: SUM-889505R

Not Yet Reviewed

Estimated Ship Date: Today

Tailpipe, Replacement for Kit 19305, No Tip, Steel, Aluminized, 3.0 in., Chevy, GMC, Each

Part Number: WLK-55513

4.75 out of 5 stars ( 4 )

Estimated Ship Date: May 27, 2026 if ordered today

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• Oversize $12.99
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Ceramic Manifold

Part Number: RNB-674-732XD

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Exhaust Manifolds, Cast Iron, Natural, Left, Cadillac, Chevrolet, GMC, Hummer, Each

Part Number: ATP-101261

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Estimated Ship Date: May 11, 2026 if ordered today

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