Freightliner Cascadia Coolant Reservoir | Freightliner A05-25263-007 | 08-18 | FleetRun FR-COOL934


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Part Number

  • FleetRun: FR-COOL934

Cross Reference

  • Freightliner: A05-25263-007 / A05-25263-005 / A05-25263-006
  • Automann: 575.1073
  • Dorman: 603-5203


    • Material: High-Durability Temperature Expanding Plastic
    • Color: Clear
    • Mounting Hole Quantity: 4
    • Coolant Level Sensor Connector: 2 Pin Connector
    • 1 Supply Outlet Hose Connection
    • 2 Overflow Hose Connections
    • Pressure Cap Maximum Pressure Capacity: 15 PSI

    Please note: this is an aftermarket part, the use of other manufacturer's names, part numbers or trademarks is for informational purposes only.

    Please verify OEM part numbers before purchasing, FleetRun assumes no liability related to product use and fitment.

    • 1 - Expansion Tank
    • 1 - Filler Cap
    • 1 - Pressure Cap
    • 1 - Coolant Level Sensor

    Introducing the FleetRun FR-COOL934, a top-quality replacement coolant reservoir surge tank for your 2008-2018 Freightliner Cascadia. This direct replacement part is built to exceed OEM standards and is designed to endure the demanding conditions of heavy-duty truck operation. The FleetRun FR-COOL934 is made from high-durability temperature-expanding plastic, making it more resistant to damage and deterioration than other coolant reservoirs on the market.

    This surge tank has a clear color and comes with 4 mounting holes, 1 supply outlet hose connection, and 2 overflow hose connections. It also features a 2-pin connector for the coolant level sensor and a pressure cap with a maximum pressure capacity of 15 PSI. 

    The package includes all the necessary hardware, such as a filler cap, a pressure cap, and a coolant level sensor, to ensure a seamless installation process. With the included coolant level sensor, you can easily monitor the coolant level and maintain optimal engine performance.

    Cross-referenced with various OEM part numbers, the FleetRun FR-COOL934 is an ideal replacement option for your Freightliner Cascadia, matching or exceeding the same standards as the original equipment. Additionally, if you encounter any problems with your coolant reservoir, our Shop Talk page offers troubleshooting tips and tricks from technicians and shops.

    Don't let a faulty coolant reservoir cause costly damage to your engine. Choose the FleetRun FR-COOL934 for a reliable and cost-effective solution that will keep your Freightliner Cascadia running smoothly and efficiently.

    • 042-002-009
    • For other information such as tips and tricks or troubleshooting from technicians and shops visit our Shop Talk page from our menu
    • 2008-2018 Freightliner Cascadia

    Detroit DD15 Coolant Capacity

    • The total capacity is 16 gallons, please be aware if you are doing a repair that does not require fully draining the system, this may be 5-6 gallons less

    Freightliner Cascadia Coolant Level Sensor Location / Common Problems

    • The coolant level sensor for your 2008-2018 Freightliner Cascadia is located on the rear side of the coolant reservoir, which is inserted and twisted to secure it (included with our coolant reservoir)
    • Common problems that cause fault codes include: faulty coolant reservoir coolant level sensor floats (necessary to replace the reservoir), faulty coolant level sensor