HUMMER H3 Exhaust - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Walker Lap-Joint Band Clamps 33226

Exhaust Clamp, Band-Style, Lap Joint, Stainless Steel, 2.500 in. Diameter, Each

Part Number: WLK-33226

4.68 out of 5 stars ( 88 )

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Summit Racing™ Spark Plug Boot Heat Shields SUM-889511

Heat Protection, Spark Plug Boot Heat Shields, Straight, Aluminum, Natural, 2 3/8 in. Long, LS, Set of 8

Part Number: SUM-889511

5.0 out of 5 stars ( 4 )

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MagnaFlow Universal Catalytic Converters 51206

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

Part Number: MPE-51206

4.0 out of 5 stars ( 5 )

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MagnaFlow Universal Catalytic Converters 99206HM

Catalytic Converter, Heavy Metal, Stainless Steel, Each

Part Number: MPE-99206HM

Not Yet Reviewed

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Dorman Exhaust Manifold Mounting Hardware 03413

Exhaust Manifold Bolts, Steel, Zinc Plated, 8mm x 1.25 Thread Size, Cadillac, Chevy, Chrysler, Jeep, Set of 12

Part Number: RNB-03413

4.67 out of 5 stars ( 12 )

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ACDelco Spark Plug Heat Shields 19329681

Spark Plug Boot Protector, Heat Shield, 500 degrees F, Snap-on, Buick, Cadillac, Chevy, GMC, Pontiac, Each

Part Number: ADO-8006

5.0 out of 5 stars ( 6 )

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Walker Replacement Exhaust Insulators 35229

Exhaust hanger, Insulator, Each

Part Number: WLK-35229

4.65 out of 5 stars ( 17 )

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Dorman Exhaust Manifold Mounting Hardware 03133HP

Exhaust Manifold Hardware, Exhaust Manifold Mounting Hardware, Stud/Nut Type, Stainless Steel, Natural, Buick, Cadillac, Chevy, Ford, GMC, Set of 6

Part Number: RNB-03133HP

5.0 out of 5 stars ( 2 )

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Summit Racing™ Spark Plug Boot Heat Shields SUM-889505BK

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

Part Number: SUM-889505BK

5.0 out of 5 stars ( 1 )

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Dorman Exhaust Manifold Mounting Hardware 03413HP

Exhaust Manifold Hardware, Bolts, Stainless Steel, Natural, 8mm x 1.25, 30mm Length, Cadillac, Chrysler, Chevy, Dodge, GMC, Set of 12

Part Number: RNB-03413HP

5.0 out of 5 stars ( 1 )

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Fel-Pro Exhaust Manifold Hardware ES 75120

Exhaust Manifold Hardware, Black, Steel, Chevrolet, 5.7L, Kit

Part Number: FEL-ES75120

Not Yet Reviewed

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Dorman Exhaust Manifold Mounting Hardware 03133

Exhaust Manifold Studs, Nuts, Front Flange, Buick, Cadillac, Oldsmobile, Chevy, GMC, Set of 6

Part Number: RNB-03133

3.64 out of 5 stars ( 25 )

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Dorman Exhaust Manifold Mounting Hardware 03413B

Exhaust Manifold Bolts, Steel, Zinc Plated, Cadillac, Chevy, GMC, Chrysler, Dodge, Isuzu, Jeep, Set of 12

Part Number: RNB-03413B

4.59 out of 5 stars ( 27 )

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Summit Racing™ Spark Plug Boot Heat Shields SUM-889505

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

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AP Exhaust Direct-Fit Catalytic Converters for 2009-2012 CANYON, COLORADO, 2008-2010 H3 - 645180

AP Exhaust Direct-Fit Catalytic Converters for 2009-2012 CANYON, COLORADO, 2008-2010 H3 - 645180

Catalytic Converters, Direct-Fit, Stock Flange Inlet/Outlet, 51.13 in. Overall Length, Right, Chevrolet, GMC, Hummer, 5.3L, Each

Part Number: APH-645180

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Summit Racing™ Spark Plug Boot Heat Shields SUM-889505R

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

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MagnaFlow Street Series Performance Exhaust Systems for 2008-2010 H3 - 16832

Exhaust System, Cat-Back, Stainless Steel, Kit

Part Number: MPE-16832

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Feb 2, 2026 if ordered today

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Dorman Exhaust Manifold Mounting Hardware 675-226

Exhaust Hardware Kit, Exhaust Manifold Hardware Kit

Part Number: RNB-675-226

Not Yet Reviewed

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Walker Universal Catalytic Converters 93238

Catalytic Converter, Universal, Stainless Steel, 2.5 in. Inlet/Outlet, 13.5 in. Length, Each

Part Number: WLK-93238

5.0 out of 5 stars ( 2 )

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ACDelco Starter Heat Shields 12668713

Shield, Starter, Heat Protection, Stock Replacement, Bolt-On, Buick, Cadillac, Chevrolet, GMC, Hummer, Car, Truck, Each

Part Number: ADO-12668713

Not Yet Reviewed

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MagnaFlow California Grade CARB Compliant Direct-Fit Manifold Catalytic Converters 5582353

Catalytic Converter, California Grade, Manifold, Direct-Fit, Stainless Steel Case, Chevy, GMC, Hummer, Isuzu, 3.7L, Each

Part Number: MPE-5582353

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converters 5592966

Catalytic Converter, California Grade, Direct-Fit, Stainless Steel Case, Rear Position, 48.250 in. Overall Length, Hummer, Isuzu, 3.7L, Each

Part Number: MPE-5592966

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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AP Exhaust Direct-Fit Catalytic Converters 642196

Catalytic Converters, Direct-Fit, Stock Flange Inlet/Outlet, Converter with Integrated Exhaust Manifold, Chevy, GMC, Hummer, Isuzu, 3.5L, Each

Part Number: APH-642196

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Summit Racing™ Spark Plug Boot Heat Shields SUM-889505BL

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

Part Number: SUM-889505BL

5.0 out of 5 stars ( 1 )

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Walker Ultra Direct-Fit Catalytic Converters for 2004-2006 CANYON, COLORADO, 2006-2007 H3 - 16481

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

Part Number: WLK-16481

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today