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Mahle GS33503 Fuel Injector O-Ring KitOE Quality 60-Day Returns
Part #: GS33503

Mahle GS33503 Fuel Injector O-Ring Kit

44 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mercedes-Benz, C350, CLK350, E350, GLK350, ML350, ML450, R350, S400, and SLK350
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Not what you need? See all Fuel Injector O-Ring Kit options

Fuel Injector Sealing for Mercedes-Benz Applications

Mahle GS33503 is a fuel injector O-ring kit built to OEM standard for reliable sealing in fuel system service. It uses fluoroelastomer O-rings, a material selected for fuel resistance and durability in demanding engine environments.

Key Features

  • Fuel injector O-ring kit for Mercedes-Benz service applications
  • OEM Standard item grade for OE-style fit and sealing performance
  • Fluoroelastomer O-ring material for fuel system compatibility
  • Mahle sealing product backed by OEM and technician trust
  • Part number GS33503 for accurate ordering and service matching

Detailed Product Overview

Mahle GS33503 is designed for fuel injector sealing service on select Mercedes-Benz models, including the C350, E350, ML350, R350, SLK350, CLK350, GLK350, ML450, and S400. This fuel injector O-ring kit supports proper injector sealing during maintenance or repair, helping maintain fuel system integrity on applications such as Fits 2006-2011 Mercedes-Benz C350, Fits 2006-2011 Mercedes-Benz E350, and Fits 2010-2013 Mercedes-Benz S400. Mahle GS33503 is an OEM-standard sealing solution for technicians servicing Mercedes-Benz fuel injector assemblies.

Common Issues This Part Addresses

  • Fuel seepage around injector seals
  • Hard starting caused by injector seal leakage
  • Fuel odor from deteriorated O-rings
  • Vacuum leaks at injector sealing points
  • Service replacement for worn fuel injector seals

Installation Notes and Tips

Inspect injector bores and mating surfaces before installation. Clean all sealing areas thoroughly and replace damaged injector seals during service. Verify the injector and engine application against the vehicle’s service information before installation. This part number, GS33503, is used for Mercedes-Benz fuel injector O-ring service on the listed model years and should be matched to the exact engine application.

Quality Assurance

Mahle sealing products are used by OEMs and technicians worldwide, and this kit is built to OEM Standard specifications. The fluoroelastomer O-ring material supports dependable sealing performance in fuel system service. This part cross-references no additional part numbers in the provided data.

BrandMahle
Part NumberGS33503
Additional Package ContentsNone
Item GradeOem standard
O-Ring MaterialFluoroelastomer
Package Quantity12

This part fits 44 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2013Mercedes-BenzS4003.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2012Mercedes-BenzGLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2012Mercedes-BenzS4003.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzC3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzE3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzGLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzML3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzML4503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzR3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzS4003.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2011Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzC3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzE3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzGLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzML3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzML4503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzR3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzS4003.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2010Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2009Mercedes-BenzC3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2009Mercedes-BenzCLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2009Mercedes-BenzE3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2009Mercedes-BenzML3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2009Mercedes-BenzR3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2009Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2008Mercedes-BenzC3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2008Mercedes-BenzCLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2008Mercedes-BenzE3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2008Mercedes-BenzML3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2008Mercedes-BenzR3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2008Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2007Mercedes-BenzC3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2007Mercedes-BenzCLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2007Mercedes-BenzE3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2007Mercedes-BenzML3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2007Mercedes-BenzR3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2007Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2006Mercedes-BenzC3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2006Mercedes-BenzCLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2006Mercedes-BenzE3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2006Mercedes-BenzML3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2006Mercedes-BenzR3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2006Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.
2005Mercedes-BenzSLK3503.5LV6N/AFuel Injector O-Ring Kit fits various engine models and sizes.

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

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