20R1525 | Genuine CAT® Fuel Transfer Pump

1. Off-Highway Trucks

• 773GC and similar Cat haul trucks

2. Excavators & Hydraulic Shovels

• 345C, 349D, 365C, 374D, 385C, 390D/F series

3. Wheel Loaders & Scrapers

• 621, 623, 631K, 637K, 651B, 657 series

4. Dozers (Track-Type Tractors)

• D8, D8R, D8T, D9T

5. Generator Sets / Power Systems

• C15, C18 generator sets and power modules

6. Marine & Industrial Engines

• C11, C13, C15, C16, C18, 3406E engines

7. Underground & Mining Equipment

• R1600, R1700 load-haul-dump machines, AD22, AD30 trucks

8. Drilling & Special Equipment

• MD6200 rotary drills and various Cat mining machines

• Supplies Fuel to the Engine – Moves fuel from the tank to the engine to ensure continuous operation.
• Maintains Proper Fuel Flow – Provides a steady and consistent fuel supply for efficient combustion.
• Builds Initial Fuel Pressure – Helps deliver fuel at the correct pressure to the injection or high-pressure fuel system.
• Removes Air from Fuel Lines – Assists in priming the system and eliminating air pockets that could cause engine hesitation or failure.
• Improves Engine Starting – Ensures fuel is available quickly during engine start-up, especially in diesel engines.
• Supports Engine Performance – Maintains stable fuel delivery, helping the engine run smoothly under different loads and conditions.
• Protects Fuel System Components – Reduces strain on injectors and high-pressure pumps by ensuring consistent fuel supply.

• Hard Starting or No Start – The engine may take longer to start or fail to start due to insufficient fuel supply.
• Engine Stalling – The engine may suddenly shut off while running because fuel delivery is interrupted.
• Loss of Power – Noticeable reduction in engine performance, especially under load or acceleration.
• Surging or Hesitation – The engine may run unevenly, surge, or hesitate due to inconsistent fuel flow.
• Low Fuel Pressure – Fuel system pressure drops below required levels, affecting injection performance.
• Unusual Noises – Whining, buzzing, or knocking sounds coming from the fuel tank or pump area.
• Poor Fuel Efficiency – Increased fuel consumption due to inefficient fuel delivery.
• Engine Warning Light – In modern systems, a fault code or check engine light may appear related to fuel pressure or delivery issues.