---
product_id: 14185717
title: "Dorman 603-900 Power Steering Reservoir Compatible with Select Models"
brand: "dorman"
price: "S$40"
currency: SGD
in_stock: true
reviews_count: 12
category: "Dorman"
url: https://www.desertcart.sg/products/14185717-dorman-603-900-power-steering-reservoir-compatible-with-select-models
store_origin: SG
region: Singapore
---

# Heat & vibration resistant Complete assembly with cap Direct OE replacement fit Dorman 603-900 Power Steering Reservoir Compatible with Select Models

**Brand:** dorman
**Price:** S$40
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride’s heart with precision power steering performance!

## Quick Answers

- **What is this?** Dorman 603-900 Power Steering Reservoir Compatible with Select Models by dorman
- **How much does it cost?** S$40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/14185717-dorman-603-900-power-steering-reservoir-compatible-with-select-models)

## Best For

- dorman enthusiasts

## Why This Product

- Trusted dorman brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Engineered to resist extreme heat and vibration under the hood
- • **Tested for Perfection:** On-vehicle tested to guarantee precise fit and long-lasting durability
- • **All-in-One Convenience:** Includes reservoir and cap for a ready-to-install solution
- • **Tailored Fit Assurance:** Use our garage tool to confirm exact compatibility with your vehicle
- • **Seamless OE Compatibility:** Fits like factory original for hassle-free installation

## Overview

The Dorman 603-900 Power Steering Reservoir is a high-quality, direct replacement part designed for select trucks. Manufactured from durable plastic, it withstands underhood heat and vibration, ensuring reliable performance. This complete assembly includes the reservoir and cap, has undergone rigorous on-vehicle testing for a perfect fit, and comes with a limited lifetime warranty. Compatible with multiple OEM part numbers, it offers a seamless, trouble-free upgrade to your vehicle’s power steering system.

## Description

This replacement power steering fluid reservoir is manufactured from quality materials to withstand the stresses of underhood heat and engine vibration. It is thoroughly tested to ensure optimum fit on specific vehicle applications.

Review: Fits well - Fits well and comes with all of the required o-rings needed to install it. Fits the pump tightly does not leak.
Review: Quality part - Perfect fit! 03 ranger

## Features

- Direct replacement - this power steering fluid reservoir fits and functions like original equipment for a trouble-free installation
- Complete assembly - includes reservoir and reservoir cap
- Reliable performance - built to withstand excessive heat and vibration
- Quality tested - this part has undergone on-vehicle testing to ensure a quality fit and long service life
- Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001C6N6MU |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #135,173 in Automotive ( See Top 100 in Automotive ) #182 in Automotive Reservoirs |
| Brand Name | Dorman |
| Compatible with Vehicle Type | Truck |
| Customer Reviews | 4.0 4.0 out of 5 stars (169) |
| Exterior Finish | Painted |
| Fit Type | Universal |
| Global Trade Identification Number | 00019495122296 |
| Included Components | Dorman - FLUID RESERVOIRS |
| Item Dimensions | 5.36 x 4.24 x 9.78 inches |
| Item Type Name | Dorman - FLUID RESERVOIRS |
| Item Weight | 8 ounces |
| Manufacturer | Dorman Products |
| Manufacturer Part Number | 603-900 |
| Manufacturer Warranty Description | Limited Lifetime Warranty |
| Material Type | Plastic |
| Model Number | 603-900 |
| OEM Equivalent Part Number | E5DZ 3A697-A; E5LY3A697A; YF1Z 3A006-AA |
| Part Interchange Info | E5DZ 3A697-A, E9SZ8100A, YF1Z 3A006-AA |
| Product Grade | Replacement Part |
| UPC | 019495122296 |

## Product Details

- **Brand:** Dorman
- **Exterior Finish:** Painted
- **Item dimensions L x W x H:** 5.36 x 4.24 x 9.78 inches
- **Material:** Plastic
- **Vehicle Service Type:** Truck

## Images

![Dorman 603-900 Power Steering Reservoir Compatible with Select Models - Image 1](https://m.media-amazon.com/images/I/81g6hAAl-9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits well
*by L***1 on February 17, 2026*

Fits well and comes with all of the required o-rings needed to install it. Fits the pump tightly does not leak.

### ⭐⭐⭐⭐⭐ Quality part
*by M***. on May 1, 2025*

Perfect fit! 03 ranger

### ⭐ Wrong o-ring supplied preventing installation.
*by T***1 on July 15, 2025*

Dorman 603-900 Power Steering Reservoir for 2000 Ranger. The unit was impossible to install, due to the supplied large o-ring being too thick. I tried several times and even removed the pump. The o-ring just pushed out of the housing causing a leak. I finally fixed the issue by purchasing an o-ring rebuild kit from O'reilly Auto for $10 and using the o-ring from that kit. The reservoir slid right on and no leaks. The Dorman supplied o-ring was quite a bit thicker than the rebuild kit o-ring. Too thick to allow the reservoir to seal on the pump body.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/14185717-dorman-603-900-power-steering-reservoir-compatible-with-select-models](https://www.desertcart.sg/products/14185717-dorman-603-900-power-steering-reservoir-compatible-with-select-models)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-07-07*