2003 GMC Sierra 3500 GBR Fuel Injection Parts

Choose your Engine for your 2003 GMC Sierra 3500


Showing 1 - 6 of 6 products
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GBR Fuel Injection
  • LB7 Engine, VIN 1; Cylinders 1 & 8 - One line required per cylinder. Recommend replacement any time injector is serviced or replaced.
  • Fuel Injector High Pressure Line
  • A common problem on the Duramax LB7 engine is contamination of the fuel fittings resulting in injector failure when serviced. Corrosion can form between the line and injector nut and fall into the injector when the line is removed or installed. Replacing the line at time of injector replacement or service is highly recommended to reduce injector failure due to contamination. GB premium fuel lines meet or exceed critical OE performance specifications for sealing and burst pressure.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - GMC Sierra 3500 V 6599 8 Cyl 6.6L 403

GBR Fuel Injection
  • Fuel Return Line Gasket Kit
  • Services one side of engine, 4 injectors.
  • Fuel Injector Return Line Gasket Kit
  • Complete kit includes banjo bolt seals to reseal injector fuel return rail manifold on Duramax LB7 engines. One required per side.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - GMC Sierra 3500 V 6599 8 Cyl 6.6L 403

GBR Fuel Injection
  • Services one injector.
  • Fuel Injector Seal Kit
  • Complete injector seal kit includes all necessary components to properly reseal injector when installed. All parts in kit are manufactured using premium OE quality materials.
  • Suggested Purchase Quantity: 8
    • Most jobs typically require 8 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - GMC Sierra 3500 V 6599 8 Cyl 6.6L 403

GBR Fuel Injection
  • LB7 Engine, VIN 1; Cylinders 3 & 6 - One line required per cylinder. Recommend replacement any time injector is serviced or replaced.
  • Fuel Injector High Pressure Line
  • A common problem on the Duramax LB7 engine is contamination of the fuel fittings resulting in injector failure when serviced. Corrosion can form between the line and injector nut and fall into the injector when the line is removed or installed. Replacing the line at time of injector replacement or service is highly recommended to reduce injector failure due to contamination. GB premium fuel lines meet or exceed critical OE performance specifications for sealing and burst pressure.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - GMC Sierra 3500 V 6599 8 Cyl 6.6L 403

GBR Fuel Injection
  • LB7 Engine, VIN 1; Cylinders 4 & 5 - One line required per cylinder. Recommend replacement any time injector is serviced or replaced.
  • Fuel Injector High Pressure Line
  • A common problem on the Duramax LB7 engine is contamination of the fuel fittings resulting in injector failure when serviced. Corrosion can form between the line and injector nut and fall into the injector when the line is removed or installed. Replacing the line at time of injector replacement or service is highly recommended to reduce injector failure due to contamination. GB premium fuel lines meet or exceed critical OE performance specifications for sealing and burst pressure.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - GMC Sierra 3500 V 6599 8 Cyl 6.6L 403

GBR Fuel Injection
  • LB7 Engine, VIN 1; Cylinders 2 & 7 - One line required per cylinder. Recommend replacement any time injector is serviced or replaced.
  • Fuel Injector High Pressure Line
  • A common problem on the Duramax LB7 engine is contamination of the fuel fittings resulting in injector failure when serviced. Corrosion can form between the line and injector nut and fall into the injector when the line is removed or installed. Replacing the line at time of injector replacement or service is highly recommended to reduce injector failure due to contamination. GB premium fuel lines meet or exceed critical OE performance specifications for sealing and burst pressure.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
2003 - GMC Sierra 3500 V 6599 8 Cyl 6.6L 403
Showing 1 - 6 of 6 products

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