With the growth of new technologies, such as hybridization and active safety systems, the electronic content will only continue to increase. If independent garages are going to be able to repair these vehicles efficiently, the scope and power of the diagnostics tools and test equipment they use must match the complexity of these systems.


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About Us

With a presence in more than 150 countries, and a global network of over 2750 service centres, Delphi aftermarket provides OE specification end-to-end solutions from components to sophisticated software solutions.

Remanufactured HEUI® Series 3126B Injectors

Delphi offers full support for our Remanufactured HEUI Series 3126B Injectors. Delphi also offers high quality seal kits for Remanufactured HEUI 3126B Injectors. These seal kits are crucial for injector performance.


Features and Benefits of Series 3126B Injectors

  • Surface lapping of each critical component ensures pressure sealing of sub-assemblies
  • New nozzle, solenoid, NOP spring, shim, screws, check balls in each injector guarantees OE quality, performance and durability
  • 100% O-ring replacement for proper sealing

Program Highlights

Coverage for the most popular medium duty truck engines 1995-2004 including:

  • GMC - School Bus Chassis
  • Topkick Series
  • Freightliner FL - 70

Remanufactured in our ISO 9001:2008 and ISO 14001:2014 certified facility.

Cost-effective alternative to new units without compromising on quality.

Delphi offers full support for our Remanufactured HEUI Series 3126B Injectors:

  • 12 month, unlimited-mileage warranty
  • R&R on qualifying Delphi remanufactured injector warranty claims
  • Over 30 years of technical expertise available through our toll-free technical hotline (1.800.521.4784)

Delphi Part Number


OE Reman Number

OE Part Number


7.2L Inline


222-5965, 173-1012, 155-1819, 188-1320, 173-4566, 173-9379, 145-9360


7.2L Inline


131-7150, 196-1401, 173-9268, 1848489C91, 126-0499, 222-5967, 173-4059, 173-9267


7.2L Inline


141-7837, 196-4229, 173-9272, 173-1013, 222-5972


7.2L Inline


198-6605, 199-6065, 222-5926, 197-7107


7.2L Inline


177-4754, 178-0199, 178-0198, 205-1285


7.2L Inline


204-6714, 222-5963, 203-3771

HTK124 Injector Seal Kit

Delphi offers high quality seal kits for Remanufactured HEUI 3126B Injectors. These seal kits are crucial for injector performance. The HTK124 kit includes six o-rings to install one injector.


Did you know?

Reducing the level of emissions is critical in today's diesel engines. Delphi is leading this technological revolution with its advanced fuel injection systems.

The leading causes of injector failure include:

  • Poor Fuel Filtration
  • Fuel Contamination
  • Incorrect Installation

It is good practice to confirm the root cause of the failure before installing replacement injectors.



For information on how to install Trim Code, and to purchase license, and download the Trim Code Upload software for the injectors, please visit https://www.delphitrimcode.com/.

The Delphi Difference

  • 100 years of OE experience, supplier to the world’s top automakers
  • OE heritage and knowledge built into every aftermarket part
  • Comprehensive portfolio for a wide range of vehicles and model years
  • Streamlined SKUs for easy inventory management
  • Support through tools, tips and training

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