Peterbilt Coolant Reservoir | Paccar N5346001 | FleetRun FR-COOL610


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Part Number

  • FleetRun: FR-COOL610

Cross Reference Part Number

  • Paccar: N5346001
  • Dorman: 603-5403
  • Misc. Industry Part Number: T1673008


  • Includes: Overflow Valve / Cap, Fill Cap, Level Sensor
  • Cap Maximum Pressure Rating : 15 PSI
  • Fits Peterbilt 389, Kenworth W900 and more (see full list below)
  • Mounting Bolt Hole Quantity: 2
  • Position: Front

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.

Peterbilt Coolant Reservoir | Paccar N5346001

Optimal Cooling for Your Heavy-Duty Truck Looking to maintain the perfect coolant reservoir for your Peterbilt semi truck? Our top-quality Peterbilt Coolant Expansion Tank, part number FR-COOL610, is the ideal choice for your Peterbilt 389, Kenworth W900, and many other compatible models. Engineered for OEM quality and durability, this expansion tank ensures efficient coolant regulation to keep your engine running at peak performance.

Why Choose Our Peterbilt Coolant Reservoir Tank?

Precision Engineering: Crafted to Paccar's stringent standards, our coolant tank is designed to fit flawlessly into your commercial vehicle's cooling system. The precise calibration ensures accurate flow control, optimizing your radiator, water pump, and fan clutch's performance. Heavy-Duty Reliability: Built tough to withstand the demands of the road, our Peterbilt Coolant Reservoir Tank excels in even the most challenging conditions. Whether you're hauling cargo or navigating tough terrains, this thermostat guarantees uninterrupted coolant flow for consistent engine cooling. Efficient Cooling System: The thermostat's ability to regulate coolant flow enables your engine to operate within its optimal temperature range. This not only maximizes fuel efficiency but also reduces wear and tear, extending the life of critical engine components. Upgrade to Peak Performance!

Don't let build quality compromise your heavy-duty truck's efficiency. Upgrade to our Peterbilt Coolant Expansion Tank and experience enhanced cooling system control for your Peterbilt semi truck. Whether you need an OEM replacement or a reliable aftermarket option, FleetRun delivers top-quality products.

Superior Quality, Trusted Performance

For professional drivers and fleet managers alike, maintaining engine health is crucial. With our Peterbilt Coolant Tank, you can trust in its quality and precision engineering. Rest assured that your engine will run smoothly, delivering the performance you expect from Paccar.

Order now and optimize your cooling system with the Peterbilt Coolant Reservoir - the perfect fit for your Peterbilt or Kenworth.

  • Peterbilt 348
  • Peterbilt 365
  • Peterbilt 367
  • Peterbilt 377
  • Peterbilt 382
  • Peterbilt 384
  • Peterbilt 386
  • Peterbilt 387
  • Peterbilt 388
  • 2008-2023+ Peterbilt 389
  • 2008-2023+ Kenworth W900
  • Kenworth T600
  • Kenworth T660
  • Kenworth T700
  • Kenworth T800
  • Kenworth T880

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