HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsDorman 603-685 Power Steering Reservoir
Part #: 603-685

Dorman 603-685 Power Steering Reservoir

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⚙️ 51 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Honda, Civic
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Overview of the Dorman Power Steering Reservoir for Honda Civic

The Dorman 603-685 power steering reservoir is designed specifically for Honda Civic models, providing a reliable solution for maintaining proper power steering fluid levels. Constructed from durable plastic with a matte gray and white finish, this reservoir includes a cap and is engineered for single reservoir systems.

  • Material: Durable plastic construction
  • Color: Gray and white with a matte finish
  • Includes one power steering reservoir and one reservoir cap
  • Single reservoir type designed for Honda Civic power steering systems
  • No mounting hardware, bracket, or fittings included

Detailed Product Description

The Dorman 603-685 power steering reservoir is a direct replacement part tailored for Honda Civic vehicles. Its plastic construction ensures resistance to corrosion and fluid degradation, while the matte gray and white finish provides a clean, functional appearance under the hood. This reservoir is designed as a single unit and comes with a matching cap to maintain system integrity and prevent fluid contamination. Note that mounting hardware, brackets, and fittings are not included, so existing components should be reused or sourced separately during installation.

Common Applications and Problem Resolution

  • Replacement for cracked or leaking power steering reservoirs in Honda Civic models
  • Addresses power steering fluid contamination or loss issues
  • Helps restore proper fluid levels to prevent steering system noise or stiffness
  • Suitable for resolving reservoir cap seal failures
  • Prevents air entry into the power steering system caused by damaged reservoirs

Installation Notes and Tips

Installation of the Dorman 603-685 power steering reservoir requires removal of the old reservoir and careful transfer or replacement of mounting hardware and fittings, as these are not included. Ensure the system is properly bled after installation to remove air pockets. Verify compatibility with your specific Honda Civic model year before installation to ensure proper fitment.

Quality Assurance and Warranty

Dorman power steering reservoirs are manufactured to meet or exceed OEM specifications for fit, form, and function. While specific warranty details for part number 603-685 should be confirmed at the time of purchase, Dorman typically offers limited warranties covering defects in material and workmanship to provide confidence in product reliability.

BrandDorman
Part Number603-685
ColorGray and White
Fittings IncludedNo
Friction Material ThicknessMatte
Installation Hardware IncludedNo
MaterialPlastic
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Package Contents1 Power Steering Reservoir; 1 Cap
Remote MountedNo
Reservoir Cap IncludedYes
Reservoir TypeSingle

This part fits 51 vehicles. Search below:

YearMakeModelSubmodelBody TypeTransmissionPositionNotes
2000HondaCivicEX-RSedanN/ABuilt in U.S.A.
2000HondaCivicEX-RCoupeN/A
2000HondaCivicEXSedanN/ABuilt in U.S.A.
2000HondaCivicEXCoupeN/A
2000HondaCivicEX-R SIRCoupeN/A
2000HondaCivicCXAutomaticN/A
2000HondaCivicGXN/ABuilt in U.S.A.
2000HondaCivicDXSedanN/ABuilt in U.S.A.
2000HondaCivicDXHatchbackN/A
2000HondaCivicDXCoupeN/A
2000HondaCivicSiN/A
2000HondaCivicHXN/A
1999HondaCivicEX-RSedanN/ABuilt in U.S.A.
1999HondaCivicEX-RCoupeN/A
1999HondaCivicEXSedanN/ABuilt in U.S.A.
1999HondaCivicEXCoupeN/A
1999HondaCivicEX-R SIRCoupeN/A
1999HondaCivicCXAutomaticN/A
1999HondaCivicGXN/ABuilt in U.S.A.
1999HondaCivicDXSedanN/ABuilt in U.S.A.
1999HondaCivicDXHatchbackN/A
1999HondaCivicDXCoupeN/A
1999HondaCivicValue PackageN/ABuilt in U.S.A.
1999HondaCivicSiN/A
1999HondaCivicHXN/A
1998HondaCivicEX-RSedanN/ABuilt in U.S.A.
1998HondaCivicEX-RCoupeN/A
1998HondaCivicEXSedanN/ABuilt in U.S.A.
1998HondaCivicEXCoupeN/A
1998HondaCivicCXAutomaticN/A
1998HondaCivicGXN/ABuilt in U.S.A.
1998HondaCivicDXSedanN/ABuilt in U.S.A.
1998HondaCivicDXHatchbackN/A
1998HondaCivicDXCoupeN/A
1998HondaCivicHXN/A
1997HondaCivicEX-RSedanN/ABuilt in U.S.A.
1997HondaCivicEX-RCoupeN/A
1997HondaCivicEXSedanN/ABuilt in U.S.A.
1997HondaCivicEXCoupeN/A
1997HondaCivicCXAutomaticN/A
1997HondaCivicDXSedanN/ABuilt in U.S.A.
1997HondaCivicDXHatchbackAutomaticN/A
1997HondaCivicDXCoupeAutomaticN/A
1997HondaCivicHXN/A
1996HondaCivicEXSedanN/ABuilt in U.S.A.
1996HondaCivicEXCoupeN/A
1996HondaCivicCXAutomaticN/A
1996HondaCivicDXSedanN/ABuilt in U.S.A.
1996HondaCivicDXHatchbackAutomaticN/A
1996HondaCivicDXCoupeAutomaticN/A
1996HondaCivicHXN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

3R-21353697SB3952

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.