---
product_id: 1776615
title: "Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models"
brand: "dorman"
price: "฿3662"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/1776615-dorman-603-100-non-pressurized-coolant-reservoir-with-cap-compatible
store_origin: TH
region: Thailand
---

# Heat & vibration resistant Direct OEM fit & function Easy, seamless installation Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models

**Brand:** dorman
**Price:** ฿3662
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your ride with confidence—cool smarter, drive stronger!

## Quick Answers

- **What is this?** Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models by dorman
- **How much does it cost?** ฿3662 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/1776615-dorman-603-100-non-pressurized-coolant-reservoir-with-cap-compatible)

## 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

- • **Trusted Legacy:** Backed by Dorman’s century-long expertise in automotive aftermarket innovation and reliability.
- • **Built to Endure:** Crafted from premium plastic materials designed to withstand intense underhood heat and vibrations.
- • **Perfect OEM Match:** Engineered to replicate original fit and function flawlessly, ensuring zero hassle replacements.
- • **Effortless Upgrade:** Non-pressurized design allows for straightforward, no-fuss installation—get back on the road faster.
- • **Tailored Fit Guarantee:** Use the garage tool to confirm compatibility with your exact Cadillac, Chevrolet, or GMC model and trim.

## Overview

The Dorman603-100 Non-Pressurized Coolant Reservoir is a direct replacement part compatible with select Cadillac, Chevrolet, and GMC models. Made from durable plastic, it resists heat and vibration for long-lasting performance. Designed for seamless installation and backed by 100 years of Dorman’s automotive aftermarket expertise, this reservoir ensures a perfect fit and reliable cooling system maintenance.

## Description

Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models

## Features

- Direct replacement - this engine coolant reservoir matches the fit and function of the original part.Material:Plastic
- Ideal solution - engineered for a seamless installation
- Durable construction - manufactured from quality materials to withstand underhood heat and vibration
- Trustworthy design - backed by 100 years of automotive aftermarket experience
- 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 |
|---------------|-------|
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | FLUID RESERVOIR |
| Item Weight | 1.5 pounds |
| Product Dimensions | 11.5 x 8.75 x 7 inches |
| Item model number | 603-100 |
| Is Discontinued By Manufacturer | No |
| Exterior | Ready To Paint If Needed |
| Manufacturer Part Number | 603-100 |
| OEM Part Number | 650373; DAKG-650373; FRT1203C; RC77; SK603100; 15630112; 15650373 |
| Hollander Number | 671-218 |
| Position | Front |

## Product Details

- **Brand:** Dorman
- **Material:** Plastic
- **Fit Type:** Vehicle Specific
- **Item dimensions L x W x H:** 11.5 x 8.75 x 7 inches
- **Exterior Finish:** Machined

## Images

![Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models - Image 1](https://m.media-amazon.com/images/I/61xkHSaknhL.jpg)
![Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models - Image 2](https://m.media-amazon.com/images/I/51B0m26J0RL.jpg)
![Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models - Image 3](https://m.media-amazon.com/images/I/91+ZwqnEC-L.jpg)
![Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models - Image 4](https://m.media-amazon.com/images/I/61DmLCn-0tL.jpg)
![Dorman 603-100 Non-Pressurized Coolant Reservoir with Cap Compatible with Select Cadillac / Chevrolet / GMC Models - Image 5](https://m.media-amazon.com/images/I/51-N++dRBML.jpg)

## Frequently Bought Together

- Dorman 603-100 Front Engine Coolant Reservoir Compatible with Select Cadillac / Chevrolet / GMC Models
- ACDelco GM Original Equipment RC27 15 P.S.I. Radiator Cap
- ACDelco Professional 252-719 Water Pump Kit

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**Shop now:** [https://www.desertcart.co.th/products/1776615-dorman-603-100-non-pressurized-coolant-reservoir-with-cap-compatible](https://www.desertcart.co.th/products/1776615-dorman-603-100-non-pressurized-coolant-reservoir-with-cap-compatible)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-31*