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603-5403 Front Engine Coolant Reservoir Water Expansion Tank Fit For Kenworth T600 T660 T800 W900 & Peterbilt 348 365 367 377 382 384 385 386 388 389

4.8 (1) Write Review
Free shipping on orders over $29.99

$104.99

$ 51 .99 $51.99

In Stock

About this item

  • 【Replace Part Number】603-5403, 6035403, N5346001, T1673008.
  • 【Fitment】2008-2015 Kenworth T600, 2008-2017 Kenworth T660, 2008-2017 Kenworth T800, 2008-2017 Kenworth W900, 2010-2018 Peterbilt 348, 2008-2018 Peterbilt 365, 2008-2018 Peterbilt 367, 2008-2014 Peterbilt 377, 2008-2017 Peterbilt 382, 2008-2016 Peterbilt 384, 2008-2014 Peterbilt 385, 2008-2016 Peterbilt 386, 2008-2015 Peterbilt 388, 2008-2017 Peterbilt 389.
  • 【Installation】Direct replacement for the original part. Make sure this engine coolant reservoir fits your exact vehicle. It only takes you few minutes to finish installation.
  • 【High Quality】The engine coolant reservoir is made of premium plastic materials, which resists expansion and cracking that can be caused by extreme temperature fluctuations.
  • 【Function】The engine coolant recovery tank can balance cooling system pressure and refill coolant in time in order to avoid engine overheating.


Specification: 100% Brand New
Material: Plastic
Color: White

Package included:
1 X Front Heavy Duty Pressurized Coolant Reservoir Overflow Bottle

Replace OE Part Number: 603-5403, 6035403, N5346001, T1673008

Compatible with the following truck or semi trucks:
2008-2015 Kenworth T600
2008-2017 Kenworth T660
2008-2017 Kenworth T800
2008-2017 Kenworth W900
2010-2018 Peterbilt 348
2008-2018 Peterbilt 365
2008-2018 Peterbilt 367
2008-2014 Peterbilt 377
2008-2017 Peterbilt 382
2008-2016 Peterbilt 384
2008-2014 Peterbilt 385
2008-2016 Peterbilt 386
2008-2015 Peterbilt 388
2008-2017 Peterbilt 389


Randy Brooks
2025-09-06 12:18:07
This product OEM from Peterbilt is over 600 bucks..not much as i need to say..it works perfectly.
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