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Dorman Exhaust Flex Bellow Kits

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Dorman exhaust flex bellow bellows are quality-engineered to absorb displacements, vibrations, and thermal expansion from extreme exhaust temperatures. These steel bellows provide a flex point in the exhaust system between the engine and after-treatment emissions equipment. They also prevent exhaust leaks and loss of engine power. All Dorman exhaust pipe bellows are direct-fit replacements and include the required components for a complete clamp-on repair, where applicable. The bellows are available in a variety of lengths and inlet diameters. Choose the model recommended for your vehicle application.

Results 1 - 17 of 17

Bellow, Exhaust, Steel, Natural, 4.25 in. Inlet, 16.00 in. Length, Clamp-on, Volvo, Truck, Kit

Part Number: RNB-674-6026

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 3.25 in. Inlet, 14.750 in. Length, Clamp-on, Mack, Truck, Kit

Part Number: RNB-674-6025

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Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 2.50 in. Inlet, 13.750 in. Length, Clamp-on, Kenworth, Peterbilt, Truck, Kit

Part Number: RNB-674-6019

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 3.2 in. Inlet, 12.5 in. Length, Clamp-on, Kenworth, Peterbilt, Truck, Kit

Part Number: RNB-674-6021

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 3.2 in. Inlet, 13.0 in. Length, Clamp-on, Peterbilt, Truck, Kit

Part Number: RNB-674-6022

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 3.25 in. Inlet, 17.50 in. Length, Clamp-on, Mack, Volvo, Kit

Part Number: RNB-674-6028

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4 in. Inlet, 12.0 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6012

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 14.50 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6013

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.0 in. Inlet, 13.0 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6014

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 52.60 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6015

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 5.00 in. Inlet, 16.500 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6005

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.75 in. Inlet, 18.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6009

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 16.80 in. Length, Clamp-on, International, Truck, Kit

Part Number: RNB-674-6011

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 14.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6001

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 5.00 in. Inlet, 30.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6004

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Estimated Ship Date: Jan 30, 2026 if ordered today

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Estimated Ship Date: Jan 30, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 3.5 in. Inlet, 12.5 in. Length, Clamp-on, Kenworth, Peterbilt, Truck, Kit

Part Number: RNB-674-6018

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Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Bellow, Exhaust, Steel, Natural, 4.00 in. Inlet, 16.00 in. Length, Clamp-on, Freightliner, Truck, Kit

Part Number: RNB-674-6008

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Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

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