HomeAir and Fuel Delivery > Service KitsMahle GS33505A Fuel Injector Seal Kit
Part #: GS33505A

Mahle GS33505A Fuel Injector Seal Kit

⚙️ 21 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Express 2500, Express 3500, Silverado 2500 HD Classic, Silverado 3500 Classic, Savana 2500, Savana 3500, Sierra 2500 HD Classic, Sierra 3500 Classic, Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500
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Reliable Fuel Injector Seal Kit for Chevrolet and GMC Trucks

The Mahle GS33505A Fuel Injector Seal Kit is designed to maintain optimal fuel system performance in select Chevrolet and GMC heavy-duty trucks. Engineered to meet OEM standards, this kit ensures a precise seal and reliable operation for fuel injectors in demanding applications.

  • Includes three fluoroelastomer O-rings for durable sealing
  • Comes with a fuel injector washer for proper fitment
  • Meets OEM standard item grade for quality assurance
  • No pintle cap or support ring required for installation
  • Compatible with multiple Chevrolet and GMC 2500 and 3500 series models

Durable Components for Effective Fuel Injector Sealing

This fuel injector seal kit features fluoroelastomer O-rings, known for their resistance to heat, fuel, and chemical degradation. The inclusion of three O-rings ensures a complete seal around the injector, preventing leaks and maintaining fuel system integrity. The kit also includes a fuel injector washer to secure proper injector positioning. Designed without the need for pintle caps or support rings, the GS33505A simplifies installation while maintaining a secure fit.

Compatible Chevrolet and GMC Models

The Mahle GS33505A Fuel Injector Seal Kit is compatible with a range of Chevrolet and GMC heavy-duty trucks, including Express 2500, Express 3500, Savana 2500, Savana 3500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, and Silverado 3500 Classic models. This ensures targeted fitment for reliable fuel injector maintenance.

Common Applications and Issues Addressed

  • Prevents fuel leaks caused by worn or damaged injector seals
  • Eliminates rough engine idle due to injector seal failure
  • Helps restore proper fuel pressure and injector performance
  • Reduces risk of fuel odor and potential engine misfires
  • Supports maintenance during injector replacement or service

Installation Notes and Tips

When installing the Mahle GS33505A Fuel Injector Seal Kit, ensure all old seals and washers are fully removed and the injector ports are clean. Lubricate the new fluoroelastomer O-rings lightly with clean engine oil to facilitate installation and prevent damage. Since pintle caps and support rings are not required, focus on proper seating of the O-rings and washer for a secure fit. Follow vehicle-specific service manual instructions for torque specifications and injector handling.

Quality Assurance and Warranty

Mahle manufactures the GS33505A Fuel Injector Seal Kit to meet OEM standards, ensuring consistent quality and durability. The use of fluoroelastomer material provides resistance to heat and fuel exposure, extending service life. While specific warranty details may vary, Mahle products typically come with a limited warranty covering defects in materials and workmanship. Refer to Mahle’s official documentation for exact warranty terms.

BrandMahle
Part NumberGS33505A
Additional Package ContentsFuel Injector Washer
Item GradeOEM Standard
O-Ring MaterialFluoroelastomer
Pintle Cap IncludedNot Required
Support Ring IncludedNot Required

This part fits 21 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2007ChevroletExpress 25006.6LV8N/AServices 1 Fuel injector
2007ChevroletExpress 35006.6LV8N/AServices 1 Fuel injector
2007ChevroletSilverado 2500 HD Classic6.6LV8N/AServices 1 Fuel injector
2007ChevroletSilverado 3500 Classic6.6LV8N/AServices 1 Fuel injector
2007GMCSavana 25006.6LV8N/AServices 1 Fuel injector
2007GMCSavana 35006.6LV8N/AServices 1 Fuel injector
2007GMCSierra 2500 HD Classic6.6LV8N/AServices 1 Fuel injector
2007GMCSierra 3500 Classic6.6LV8N/AServices 1 Fuel injector
2006ChevroletExpress 25006.6LV8N/AServices 1 Fuel injector
2006ChevroletExpress 35006.6LV8N/AServices 1 Fuel injector
2006ChevroletSilverado 2500 HD6.6LV8N/AServices 1 Fuel injector
2006ChevroletSilverado 35006.6LV8N/AServices 1 Fuel injector
2006GMCSavana 25006.6LV8N/AServices 1 Fuel injector
2006GMCSavana 35006.6LV8N/AServices 1 Fuel injector
2006GMCSierra 2500 HD6.6LV8N/AServices 1 Fuel injector
2006GMCSierra 35006.6LV8N/AServices 1 Fuel injector
2005ChevroletSilverado 2500 HD6.6LV8N/AServices 1 Fuel injector
2005ChevroletSilverado 35006.6LV8N/AServices 1 Fuel injector
2005GMCSierra 2500 HD6.6LV8N/AServices 1 Fuel injector
2005GMCSierra 35006.6LV8N/AServices 1 Fuel injector
2004ChevroletSilverado 2500 HD6.6LV8N/AServices 1 Fuel injector

* 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:

ES73178

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