Fuel Assemblies

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For Reference Only - Some Applications May Vary.


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  1. Fuel Assembly, Fuel Blender, WIF, ESI, 12V K37-1027-112011 - Paccar
    Price $819.94
    Ships within 72 hours
  2. Fuel Assembly, Fuel Blender, WIF, SSI, 12V K37-1027-102011 - Paccar
    Price $811.66
    Ships within 72 hours
  3. Fuel Assembly, Fuel Blender, WIF, SSI K37-1027-102001 - Paccar
    Price $746.91
    Ships within 72 hours
  4. Fuel Assembly, Fuel Blender, WIF, SSI K37-1027-101001 - Paccar
    Price $746.91
    Ships within 72 hours
  5. Fuel Assembly, Unheated, WIF, SSI K37-1027-200001 - Paccar
    Price $733.37
    Ships within 72 hours
  6. Fuel Assembly, Unheated, WIF, SSI, 12V K37-1027-100011 - Paccar
    Price $730.59
    Ships within 72 hours
  7. Fuel Assembly, Fuel Blender, WIF, ESI K37-1027-111001 - Paccar
    Price $711.24
    Ships within 72 hours
  8. Hp F/Line Kt A9340704632 - Detroit Diesel
    Price $296.81
    Ships within 72 hours
  9. Valve A9060920910 - Detroit Diesel
    Detroit Diesel Valve A9060920910
    Part# A9060920910 OLD# -
    Price $63.91
    Ships within 72 hours
  10. Oil Line A5411800922 - Detroit Diesel
    Price $63.23
    Ships within 72 hours
  11. Pipe A4722030315 - Detroit Diesel
    Detroit Diesel Pipe A4722030315
    Part# A4722030315 OLD# -
    Price $18.13
    Ships within 72 hours
  12. Valve, Needle Return Pressure Control A4720980457 - Detroit Diesel
    Price $19.43
    Ships within 72 hours
  13. P/Limit Vlv A4720781249 - Detroit Diesel
    Price $231.73
    Ships within 72 hours
  14. Valve, Pressure Limiting A4720781049 - Detroit Diesel
    Price $143.78
    Ships within 72 hours
  15. Oil Feed Lin A4601800720 - Detroit Diesel
    Price $33.83
    Ships within 72 hours
  16. Bracket A4600960245 - Detroit Diesel
    Price $30.14
    Ships within 72 hours
  17. Injector Asm A0020102751 - Detroit Diesel
    Detroit Diesel Injector Asm A0020102751
    Part# A0020102751 OLD# RA0020102751
    Price $440.72
    Ships within 72 hours
  18. Inj Mbe 900 6.3L Epa98 A0020102251 - Detroit Diesel
    Detroit Diesel Inj Mbe 900 6.3L Epa98 A0020102251
    Part# A0020102251 OLD# RA0020102251
    Price $774.05
    Ships within 72 hours
  19. Fuel Cooler A0000700879 - Detroit Diesel
    Price $285.70
    Ships within 72 hours
  20. Tube Asm 23538465 - Detroit Diesel
    Price $130.71
    Ships within 72 hours
  21. Tube Asm 23538186 - Detroit Diesel
    Price $133.81
    Ships within 72 hours
  22. Tube Asm 23538185 - Detroit Diesel
    Price $30.49
    Ships within 72 hours
  23. Supt Bridge 23536833 - Detroit Diesel
    Price $18.68
    Ships within 72 hours
  24. Adapter 23529282 - Detroit Diesel
    Price $37.94
    Ships within 72 hours
  25. Regulator 23528950 - Detroit Diesel
    Price $603.69
    Ships within 72 hours
  26. M-Inj Sprng 23528939 - Detroit Diesel
    Price $20.35
    Ships within 72 hours
  27. Sensor 23528890 - Detroit Diesel
    Price $448.13
    Ships within 72 hours
  28. Fuel Chk Vl 23516993 - Detroit Diesel
    Price $129.07
    Ships within 72 hours
  29. Plate 23516935 - Detroit Diesel
    Price $511.09
    Ships within 72 hours
  30. Inj Harn Ind 23513605 - Detroit Diesel
    Price $404.74
    Ships within 72 hours
  31. Valve 23505047 - Detroit Diesel
    Price $168.24
    Ships within 72 hours
  32. Clamp 08929088 - Detroit Diesel
    Price $57.25
    Ships within 72 hours
  33. Pipe - Fuel, From Tank To Fuel Lift Pump 1973417PE - Paccar Engine
    Price $39.73
    Ships within 72 hours
  34. Fuel Assembly- Unheated WIF ESI 12V K37-1027-110001 - Kenworth
    Price $604.09 Original price $652.12
    Ships within 72 hours
  35. Heated Fuel Assembly- WIF ESI 12V K37-1027-110011 - Paccar
    Price $730.40
    Ships within 72 hours
  36. Fuel Assembly Blender- WIF ESI K37-1027-111011 - Paccar
    Price $819.94
    Ships within 72 hours
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Fuel Assemblies and components for trucks and semis

Fuel assemblies refer to the combination of components that make up the fuel delivery system, responsible for storing, delivering, and managing the fuel supply to the engine. The fuel assembly ensures a consistent and adequate supply of fuel for efficient combustion and optimal performance. 

Some of the primary components of a fuel assembly in trucks and semis include the fuel tank, fuel pump, fuel lines, fuel filter, fuel injectors, and the fuel pressure regulator. Properly functioning and well-maintained fuel assemblies are essential for maintaining engine performance and fuel efficiency, as well as overall vehicle reliability.

Most important fuel assemblies to maintain

The fuel tank stores the fuel and is typically made of materials such as steel, aluminum, or high-density polyethylene to prevent corrosion and leakage. It also includes components like the fuel level sender, which measures the amount of fuel in the tank, and the fuel filler neck, through which fuel is added to the tank.

The fuel pump is responsible for pressurizing and delivering fuel from the fuel tank to the engine. There are two main types of fuel pumps used in trucks and semis: mechanical; and electric. Mechanical fuel pumps are driven by the engine’s camshaft, while electric pumps are powered by the vehicle’s electrical system.

Fuel lines are tubes and hoses made of durable materials that transport fuel from the fuel tank to the engine’s fuel system components. The fuel filter removes contaminants, such as dirt, rust, and debris, from the fuel before it reaches the engine. Fuel injectors are responsible for atomizing the fuel and injecting it into the engine’s combustion chamber in precise amounts and at the right time. The Fuel pressure regulator helps maintain the correct fuel pressure within the fuel system by regulating the amount of fuel returning to the tank.

For all your fuel assembly parts needs, check out our catalog at Big Rig World for high-quality replacement parts and more.