HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsDorman 603-673 Power Steering Reservoir
Part #: 603-673

Dorman 603-673 Power Steering Reservoir

N/A
⚙️ 5 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$105.44Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Lexus, RX350 and RX330
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dorman Power Steering Reservoir 603-673

The Dorman power steering reservoir 603-673 is designed for reliable fluid storage and management in Lexus RX330 and RX350 models. This remote-mounted reservoir features a durable combination of metal and plastic materials, ensuring long-lasting performance in your vehicle's power steering system.

  • Constructed with both metal and plastic for durability and corrosion resistance
  • Matte finish in black and white colors for a clean, functional appearance
  • Includes mounting bracket and hardware for secure installation
  • Comes with a reservoir cap to maintain proper fluid containment
  • Designed as a single reservoir type, remote mounted for optimal system integration

Detailed Product Description

The Dorman 603-673 power steering reservoir is engineered specifically for Lexus RX330 and RX350 vehicles, providing a precise fit and reliable fluid containment. The reservoir combines metal and plastic components to balance strength and weight, with a matte black and white finish that resists wear and blends with engine bay components. This single reservoir type is remote mounted, allowing for efficient fluid circulation and easy access during maintenance. The package includes the reservoir, a cap, and a mounting bracket with hardware, facilitating a straightforward replacement process without the need for additional fittings or installation hardware.

Common Applications and Problem Resolution

  • Replaces cracked or leaking power steering reservoirs in Lexus RX330 and RX350
  • Addresses fluid contamination or loss due to damaged reservoir caps
  • Solves mounting issues with included bracket and hardware for secure fitment
  • Prevents power steering fluid leaks that can cause steering performance problems
  • Restores proper fluid levels to maintain smooth power steering operation

Installation Notes and Tips

  • Ensure vehicle compatibility with Lexus RX330 or RX350 before installation
  • Use the included mounting bracket and hardware for secure and correct placement
  • Check power steering fluid levels after installation and refill as necessary
  • Inspect hoses and connections for wear or damage during replacement
  • Follow manufacturer torque specifications for mounting hardware

Quality Assurance and Warranty Information

Dorman power steering reservoir 603-673 is manufactured to meet or exceed OEM standards for fit, form, and function. The product undergoes rigorous quality control to ensure durability and performance in demanding automotive environments. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.

BrandDorman
Part Number603-673
ColorBlack
ColorWhite
Fittings IncludedNo
Friction Material ThicknessMatte
Installation Hardware IncludedNo
MaterialMetal
MaterialPlastic
Mounting Bracket IncludedYes
Mounting Hardware IncludedYes
Package Contents1 Power Steering Reservoir; 1 Cap; 1 Bracket
Remote MountedYes
Reservoir Cap IncludedYes
Reservoir TypeSingle

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
2008LexusRX350N/A
2007LexusRX350N/A
2006LexusRX330N/A
2005LexusRX330N/A
2004LexusRX330N/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-1104430506050

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