Dorman 603-5401 | Washer Fluid Reservoir

Part Number
Heavy Duty Windshield Washer Fluid Reservoir

Fits: 1995-1999 Kenworth K300, 1995-2008 Kenworth T300, 2008-2019 Kenworth T170, 2008-2019 Kenworth T270, 2008-2019 Kenworth T370, 1995-1997 Kenworth T450, 1995-2007 Kenworth T600A, 1995-2019 Kenworth T800, 1995-2019 Kenworth W900, 1995-2019 Kenworth T400, 1995-2016 Kenworth C500, 2007-2018 Kenworth T660

Fits: 95-16 Kenworth C500, 95-97 Kenworth T450, 95-19 Kenworth W900, 07-18 Kenworth T660, 08-19 Kenworth T170, 08-19 Kenworth T370, 95-99 Kenworth K300, 95-08 Kenworth T300, 95-99 Kenworth T400, 95-07 Kenworth T600A, 95-19 Kenworth T800, 10-19 Kenworth T400, 08-19 Kenworth T270
Special Price $83.16 Regular Price $97.83
In stock
Only 6 left
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Estimated Ship Date: 1 Business Day or Less


Heavy Duty Windshield Washer Fluid Reservoir

This washer fluid reservoir is designed to match the fit and function of the original equipment reservoir. It is engineered to withstand the stresses of underhood heat and engine vibration on specified vehicle makes, models, and years.


  • Direct Replacement - This Windshield Washer Fluid Reservoir Is Designed To Match The Fit And Function Of The Original Equipment Reservoir On Specified Vehicle Makes, Models And Years
  • Ideal Solution - Engineered To Help Ensure Leak-Free Washer Fluid Storage When An Original Reservoir Has Cracked Or Failed From Heat And Vibration
  • Durable Construction - Made Of Quality Materials For Reliable Performance And Long Service Life
  • Trustworthy Quality - Backed By Team Of Product Experts In The United States And More Than A Century Of Automotive Experience


Mounting Bracket Included:No
Mounting Hardware Included:No
Package Contents:1 Coolant Reservoir
Reservoir Cap Included:Yes


  • Automann: 575.1041
  • Paccar Parts: R861004
  • Paccar Parts: R861001
  • Paccar Parts: K11420
  • Paccar Parts: R861011
  • Paccar Parts: K11446


  • 1995-2016 Kenworth C500        Note: ID No. K114-20
  • 1995-1999 Kenworth T400        Note: ID No. K114-20
  • 1995-1997 Kenworth T450        Note: ID No. K114-20
  • 1995-2019 Kenworth T800        Note: ID No. K114-20
  • 2010-2019 Kenworth T400        Note: ID No. K114-20
  • 2008-2019 Kenworth T170        Note: ID No. K114-20
  • 1995-1999 Kenworth K300        Note: ID No. K114-20
  • 1995-2008 Kenworth T300        Note: ID No. K114-20
  • 1995-2007 Kenworth T600A        Note: ID No. K114-20
  • 1995-2019 Kenworth W900        Note: ID No. K114-20
  • 2007-2018 Kenworth T660        Note: ID No. K114-20
  • 2008-2019 Kenworth T270        Note: ID No. K114-20
  • 2008-2019 Kenworth T370        Note: ID No. K114-20

Customer Questions
Can I use Dorman parts to replace OEM parts?
Yes, Dorman parts can often be used as replacements for OEM parts, but it is important to carefully compare specifications and ensure compatibility.
How do I install Dorman shift linkage bushing?
To install a Dorman shift linkage bushing, first locate the old bushing and remove it if necessary. Apply lubricant to the Dorman bushing and slide it onto the shift linkage, tapping it into place with a soft tool until fully seated. Check the alignment and function of the shift linkage after installation.
Where is Dorman manufactured?
Dorman is a global automotive parts supplier with manufacturing facilities in the United States, Mexico, Canada, China, and India. Its headquarters and largest manufacturing facility are located in Colmar, Pennsylvania, USA.
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