HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsDorman 603-707 Power Steering Reservoir
Part #: 603-707

Dorman 603-707 Power Steering Reservoir

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⚙️ 7 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Acura, MDX
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Overview of Dorman Power Steering Reservoir for Acura MDX

The Dorman 603-707 power steering reservoir is designed specifically for Acura MDX models, providing a reliable solution for your vehicle's power steering fluid storage needs. This remote-mounted reservoir features a durable plastic construction with a matte finish, ensuring long-lasting performance under various driving conditions.

  • Material: High-quality plastic for durability and corrosion resistance
  • Colors: Black, red, and white for clear fluid level visibility
  • Finish: Matte surface to reduce glare and enhance appearance
  • Reservoir Type: Single reservoir design with included cap
  • Remote Mounted: Allows flexible installation away from the pump
  • Package Contents: Includes one power steering reservoir and one reservoir cap
  • No mounting hardware, bracket, or fittings included

Detailed Product Description

The Dorman 603-707 power steering reservoir is engineered to meet the specifications required for Acura MDX vehicles. Its plastic construction offers resistance to corrosion and wear, while the matte finish minimizes surface reflections. The reservoir is remote mounted, which provides installation flexibility and helps maintain optimal fluid temperature by positioning it away from engine heat. The included reservoir cap ensures a secure seal to prevent fluid leaks and contamination. This single reservoir design simplifies the power steering system and is compatible with the OEM setup of the Acura MDX.

Common Applications and Problem Resolution

This power steering reservoir is used to store and supply hydraulic fluid to the power steering pump, ensuring smooth steering operation. It is particularly useful for addressing the following issues:

  • Leaking or cracked original power steering reservoir
  • Contaminated or degraded power steering fluid storage
  • Inadequate fluid capacity causing steering performance issues
  • Replacement of worn or damaged reservoir caps
  • Upgrading to a remote-mounted reservoir for improved system layout

Installation Notes and Tips

Installation of the Dorman 603-707 power steering reservoir requires basic mechanical skills and tools. Since mounting hardware and fittings are not included, reuse existing components or source compatible parts separately. Ensure the reservoir is securely mounted in a remote location as per Acura MDX specifications. After installation, fill the reservoir with the recommended power steering fluid and bleed the system to remove air pockets for optimal steering performance.

Quality Assurance and Warranty

Dorman power steering reservoirs are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 603-707 are not provided here, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official documentation for complete warranty information.

BrandDorman
Part Number603-707
ColorBlack
ColorRed
ColorWhite
Fittings IncludedNo
Friction Material ThicknessMatte
Installation Hardware IncludedNo
MaterialPlastic
Mounting Bracket IncludedNo
Mounting Hardware IncludedNo
Package Contents1 Power Steering Reservoir; 1 Cap
Remote MountedYes
Reservoir Cap IncludedYes
Reservoir TypeSingle

This part fits 7 vehicles. Search below:

YearMakeModelPositionNotes
2013AcuraMDXN/A
2012AcuraMDXN/A
2011AcuraMDXN/A
2010AcuraMDXN/A
2009AcuraMDXN/A
2008AcuraMDXN/A
2007AcuraMDXN/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-21153697SB3951

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