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Dorman 903-305 Exhaust Clamp - Converter To MufflerOE Quality 60-Day Returns
Part #: 903-305

Dorman 903-305 Exhaust Clamp - Converter To Muffler

Converter To Muffler
101 vehicles fit this part
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Fitment: Cadillac, Chevrolet, GMC, and Hummer, Cheyenne, Escalade, Escalade ESV, Escalade EXT, H2, Sierra, Sierra 1500, Silverado 1500, Silverado 3500 HD, Suburban 2500, Tahoe, Yukon, Yukon XL, Yukon XL 1500, and Yukon XL 2500
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Dorman 903-305 Exhaust Clamp for OE-Style Repair

Dorman 903-305 is a standard replacement exhaust clamp built to match the function of the original equipment clamp on specified vehicles. It uses an aluminum construction with a natural finish and V-band clamping design to help maintain a secure connection between exhaust components.

Compatible with select Cadillac Escalade, Chevrolet Silverado 1500, GMC Sierra 1500, and Yukon applications, this clamp supports converter-to-muffler exhaust connections where a 3.50 in. clamp is specified. The Dorman 903-305 is a direct-fit exhaust hardware solution for repair work that calls for a specific OE-style clamp design.

Key Features

  • OE-style exhaust clamp for specified vehicle applications
  • Aluminum construction with natural finish
  • V-band clamping design for secure exhaust joint retention
  • Specific fitment for converter-to-muffler locations
  • Maximum diameter: 3.78 in.
  • Thread diameter: 0.125 in. with 70 mm thread length
  • Cross-reference part number: 20779890

Detailed Description

This exhaust clamp is engineered for vehicles that require a 3.50 in. clamp at the converter-to-muffler connection. It is a direct replacement for the original equipment style used on applications such as 2011-2021 Cadillac Escalade, 2011-2020 Chevrolet Silverado 1500, and 2011-2021 GMC Yukon. The V-band design helps create a tight, serviceable connection between exhaust system sections while the aluminum material supports corrosion resistance in everyday exhaust service.

Dorman 903-305 is a practical choice for exhaust repair on Cadillac Escalade, Chevrolet Silverado 1500, and GMC Sierra 1500 platforms where the factory clamp design and dimensions must be matched. Part number 903-305 also cross-references 20779890 for the same application.

What This Part Helps Address

  • Loose exhaust connections at the converter-to-muffler joint
  • Exhaust leaks caused by a worn or damaged clamp
  • Service issues when the original clamp no longer holds proper tension
  • Fitment problems when a specific V-band clamp design is required
  • Replacement needs for OE-style exhaust hardware on listed GM and Cadillac vehicles

Installation Notes and Tips

Verify the vehicle’s exhaust connection size and clamp style before installation. This part is listed for converter-to-muffler positions only and is specific to the applications shown. Confirm the 3.50 in. clamp requirement and inspect mating exhaust surfaces for wear, distortion, or damage before securing the joint.

Quality Assurance

Dorman manufactures this clamp from quality materials for reliability and OE-style function. It is a standard replacement exhaust hardware part designed for specified fitment and consistent service use.

  • Fits 2011-2021 Cadillac Escalade, converter to muffler
  • Fits 2012-2021 Cadillac Escalade ESV, converter to muffler
  • Fits 2018-2021 Chevrolet Tahoe, converter to muffler
  • Fits 2011-2021 GMC Sierra 1500, converter to muffler
  • Fits 2011-2021 GMC Yukon, converter to muffler
  • Fits 2015-2021 GMC Yukon XL, converter to muffler
  • Fits 2014-2020 Chevrolet Cheyenne, converter to muffler
  • Fits 2011-2020 Chevrolet Silverado 1500, converter to muffler
  • Fits 2013-2020 GMC Sierra, converter to muffler
  • Fits 2016-2019 Chevrolet Silverado 3500 HD, converter to muffler
  • Fits 2011-2014 GMC Yukon XL 1500, converter to muffler
  • Fits 2011-2013 Cadillac Escalade EXT, converter to muffler
  • Fits 2009-2013 Chevrolet Suburban 2500, converter to muffler
  • Fits 2009-2013 GMC Yukon XL 2500, converter to muffler
  • Fits 2009 Hummer H2, converter to muffler
BrandDorman
Part Number903-305
MaterialAluminio
MaterialAluminum
Size96
ColorGris metálico
ColorMetallic gray
Performance RatedNo
Performance RatedNon
Pipe Diameter96
Flange IncludedOui
Flange IncludedSí
Flange IncludedYes
FinishNatural
Nut TypeHex-nut
Nut TypeTuerca hexagonal
Outside Diameter96
Thread Length70
Universal Or Specific FitEspecífico
Universal Or Specific FitSpecific
Grade TypeReemplazo estándar
Grade TypeStandard replacement
Clamping TypeBanda en v
Clamping TypeV band
Housing ColorNatural
98082
Clamp DesignV band
Contenidos del paquete1 abrazadera
Diámetro de la rosca0.125 in.
Diámetro máximo (in)3.78 in.
Diseño de la abrazaderaBanda en v
Maximum Diameter (In)3.78 in

This part fits 101 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2021CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2021ChevroletTahoe6.2LV8Converter To Muffler3.50 In. Clamp
2021GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2021GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2021GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2020CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2020CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2020ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2020ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2020ChevroletTahoe6.2LV8Converter To Muffler3.50 In. Clamp
2020GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2020GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2020GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2020GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2019CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2019CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2019ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2019ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2019ChevroletSilverado 3500 HD6.0LV8Converter To Muffler3.50 In. Clamp
2019ChevroletTahoe6.2LV8Converter To Muffler3.50 In. Clamp
2019GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2019GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2019GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2019GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2018CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2018CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2018ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2018ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2018ChevroletSilverado 3500 HD6.0LV8Converter To Muffler3.50 In. Clamp
2018ChevroletTahoe6.2LV8Converter To Muffler3.50 In. Clamp
2018GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2018GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2018GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2018GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2017CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2017CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2017ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2017ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2017ChevroletSilverado 3500 HD6.0LV8Converter To Muffler3.50 In. Clamp
2017GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2017GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2017GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2017GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2016CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2016CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2016ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2016ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2016ChevroletSilverado 3500 HD6.0LV8Converter To Muffler3.50 In. Clamp
2016GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2016GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2016GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2016GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2015CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2015CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2015ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2015ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2015GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2015GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2015GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2015GMCYukon XL6.2LV8Converter To Muffler3.50 In. Clamp
2014CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2014CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2014ChevroletCheyenne6.2LV8Converter To Muffler3.50 In. Clamp
2014ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2014GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2014GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2014GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2014GMCYukon XL 15006.2LV8Converter To Muffler3.50 In. Clamp
2013CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2013CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2013CadillacEscalade EXT6.2LV8Converter To Muffler3.50 In. Clamp
2013ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2013ChevroletSuburban 25006.0LV8Converter To Muffler3.50 In. Clamp
2013GMCSierra6.2LV8Converter To Muffler3.50 In. Clamp
2013GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2013GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2013GMCYukon XL 15006.2LV8Converter To Muffler3.50 In. Clamp
2013GMCYukon XL 25006.0LV8Converter To Muffler3.50 In. Clamp
2012CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2012CadillacEscalade ESV6.2LV8Converter To Muffler3.50 In. Clamp
2012CadillacEscalade EXT6.2LV8Converter To Muffler3.50 In. Clamp
2012ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2012ChevroletSuburban 25006.0LV8Converter To Muffler3.50 In. Clamp
2012GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2012GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2012GMCYukon XL 15006.2LV8Converter To Muffler3.50 In. Clamp
2012GMCYukon XL 25006.0LV8Converter To Muffler3.50 In. Clamp
2011CadillacEscalade6.2LV8Converter To Muffler3.50 In. Clamp
2011CadillacEscalade EXT6.2LV8Converter To Muffler3.50 In. Clamp
2011ChevroletSilverado 15006.2LV8Converter To Muffler3.50 In. Clamp
2011ChevroletSuburban 25006.0LV8Converter To Muffler3.50 In. Clamp
2011GMCSierra 15006.2LV8Converter To Muffler3.50 In. Clamp
2011GMCYukon6.2LV8Converter To Muffler3.50 In. Clamp
2011GMCYukon XL 15006.2LV8Converter To Muffler3.50 In. Clamp
2011GMCYukon XL 25006.0LV8Converter To Muffler3.50 In. Clamp
2010ChevroletSuburban 25006.0LV8Converter To Muffler3.50 In. Clamp
2010GMCYukon XL 25006.0LV8Converter To Muffler3.50 In. Clamp
2009ChevroletSuburban 25006.0LV8Converter To Muffler3.50 In. Clamp
2009GMCYukon XL 25006.0LV8Converter To Muffler3.50 In. Clamp
2009HummerH26.2LV8Converter To Muffler3.50 In. Clamp

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

20779890

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.