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Make sure this part fits

GM 12458122
Injection Nozzle

1996-2002 GM

Customer Questions & Expert Answers (7)
GM 12458122 Injection Nozzle
  • Part Description
    Injector, Fuel Injection; Diesel Fuel Injector Nozzle; Nozzle Holder Assembly; Fuel Injector
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • 2001 Chevy Express 2500 Injection Nozzle Diagram for 12458122
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 12458122

  • Vehicle Fitment

    Year Make Model Trim Engine
    1996-2002 Chevrolet Express 2500Base, LS8 Cyl 6.5 L DIESEL
    1996-2002 Chevrolet Express 3500Base, LS8 Cyl 6.5 L DIESEL
    1996-2002 GMC Savana 2500Base, SLE, SLT8 Cyl 6.5 L DIESEL
    1996-2002 GMC Savana 3500Base, SLE, SLT8 Cyl 6.5 L DIESEL
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 12458122 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12458122 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the fuel injector on Chevrolet Express 2500? Posted by Customer
    A:
    The fuel meter body assembly needs removal before proceeding with Fuel Injector replacement. The injector assembly retainer and injector retainer lock nuts need to be uninstall while paying attention to protect electrical connector terminals before you remove the fuel injectors as they should be treated as one complete assembly. Cleaning the electrical fuel injectors remains discouraged because they need to stay away from all types of solvents and the prevention of damage requires they stay dry. A small tip punch should be used to push down between the injector terminals when pulling the poppet nozzle tube downward for injector removal. A proper installation process requires calibration of each injector at its designated flow rate followed by the correct installment of the injector complied with the application type. The new injector o-ring seals need lubrication using clean engine oil before receiving their proper placement on the injector assembly . After installing the Fuel Injector assembly into its socket position the system with the injector assembly retainer together with the injector retainer lock nuts at 3.0 n.m (27 lb in). Reinstall the fuel meter body assembly as the last step of the procedure.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to service the fuel injector on GMC Savana 2500? Posted by Customer
    A:
    The first step for Fuel Injector service requires removal of the fuel meter body assembly followed by the injector assembly retainer and the retention lock nuts. Take care while extracting fuel injectors to protect the electrical connector terminals, injector filter and fuel nozzle since the Fuel Injector should be maintained as an entire assembly unit. Injectors function as electrical components so exposure to liquid solvents or cleaners will cause destruction. A small tip punch should be used to pull the poppet nozzle tube downward during the injector removal process between the injector terminals. The installation process requires a new injector that has been calibrated precisely for the flow rate amount that the application needs. Apply engine oil on the new injector o-ring seals before placing them correctly on the injector assembly. After installing the Fuel Injector assembly into the injector socket you must add the injector assembly retainer with its matching injector retainer lock nuts . Tighten these nuts to 3.0 n.m (27 lb in). Replace the fuel meter body assembly as the final step.
    Posted by ChevyPartsGiant Specialist
    Q:
    What components need to be reinstalled after securing the fuel pipe for the 2002 Chevrolet Express 2500? Posted by Customer
    A:
    Reinstall the brake booster vacuum hose and connector, resonator, air inlet duct, ignition wires, and engine cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Fuel Injector
    Q:
    How do you remove the injector for the 2000 Chevrolet Express 3500? Posted by Customer
    A:
    While pulling the poppet nozzle tube downward, use a small tip punch to push down between the injector terminals until the injector is removed.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Fuel Injector
    Q:
    How should the new injector O-ring seals be prepared for the 2002 GMC Savana 3500? Posted by Customer
    A:
    Lubricate the new injector O-ring seals with clean engine oil and install the O-rings on the injector assembly.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Fuel Injector
    Q:
    What should be done after assembling the injector for the 2001 GMC Savana 3500? Posted by Customer
    A:
    Reassemble the lower hold down plate and nuts, tightening them to 3 N.m (27 lb in).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Fuel Injector
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Injection Nozzle 12458122 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 12458122 Injection Nozzle is available in the market under the name GM Fuel Injector. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12458122 Injection Nozzle fits certain Chevrolet Express 2500, Express 3500 models, as well as GMC Savana 2500, Savana 3500 models.
The original GM component designated by manufacturer part number 12458122 maintains top performance when functioning as the Injector, Fuel Injection; Diesel Fuel Injector Nozzle; Nozzle Holder Assembly; Fuel Injector unit. The component 12458122 is constructed from durable material and its dimensions span 5.2 x 2.0 x 2.0 inches while weighing 0.80 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Injector. The part 12458122 has available replacement options. Each vehicle needs 8 units of the part marked as SKU 12458122. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
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