---
product_id: 660211176
title: "POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each"
brand: "por-15"
price: "€ 172.31"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/660211176-por-15-gray-stop-rust-undercoating-system-3-products-32
store_origin: IE
region: Ireland
---

# Waterproof & chemical resistant 50 sq ft coverage per bottle 3-step permanent rust shield POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each

**Brand:** por-15
**Price:** € 172.31
**Availability:** ✅ In Stock

## Summary

> 🛠️ Stop rust in its tracks — protect your metal like a pro!

## Quick Answers

- **What is this?** POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each by por-15
- **How much does it cost?** € 172.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/660211176-por-15-gray-stop-rust-undercoating-system-3-products-32)

## Best For

- por-15 enthusiasts

## Why This Product

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

## Key Features

- • **Hammer-Tough Finish:** Resists acids, alkalis, oils, fuels, and weather damage.
- • **Industrial-Grade Adhesion:** Metal Prep etches surfaces for maximum coating bond.
- • **Ultimate 3-Step Rust Defense:** Clean, prep, and coat for unbeatable corrosion protection.
- • **EV-Ready Non-Conductive Coating:** Safe for electric vehicle conversions and sensitive electronics.
- • **Effortless Application & Coverage:** Each 32 oz bottle covers up to 50 sq ft with a glossy, chip-resistant finish.

## Overview

The POR-15 Gray Stop Rust Undercoating System is a professional-grade, 3-step rust prevention kit featuring a cleaner, metal prep, and a high-performance rust preventive coating. Designed for permanent corrosion protection, it creates a waterproof, chemical-resistant, and chip-resistant barrier on metal surfaces, ideal for automotive, industrial, and EV applications. Each 32 oz bottle covers 50 sq ft, delivering a durable, hammer-tough finish that outperforms traditional rust paints.

## Description

The POR-15 3-Step Stop Rust System is designed to stop rust on metal surfaces and ensures the best results when applying POR-15 Rust Preventive Coating. Prepare and prime bare metal or directly paint rust with confidence. The clear-cut process when using this rust stopper for metal allows for the proper cleaning, prepping, and coating of metal to create a non-porous surface to seal and protect metal from water, chemicals, salt, acids, alkalis, and other corrosive contaminants. Black and Gray Rust Preventive Coatings are non-conductive and good for EV conversion applications. A topcoat is required if exposed to UV light.

## Features

- ✅ POR-15 3-Step Stop Rust System is the ultimate rust preventive system for permanent corrosion protection. Shields metal in just 3 easy steps, clean it, prep it, and coat it. Better than any rust paint available!
- ✅ Step 1: POR-15 Cleaner Degreaser removes grease, oil, dirt, and grime in one application without leaving residues, noxious fumes, or flammable solvents.
- ✅ Step 2: POR-15 Metal Prep etches to provide the best adhesion for POR-15 Rust Preventive Coating on metal surfaces.
- ✅ Step 3: POR-15 Rust Preventive Coating is a high-tech, high-performance rust preventive coating designed for application directly on stable rust or seasoned metal surfaces. Permanent rust protection with a hammer-tough finish resistant to acids, alkalis, oils, and repels all fuels.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range Description | Adult |
| Asin | B0DJ1LZFCT |
| Best Sellers Rank | #37,830 in Automotive (See Top 100 in Automotive) #137 in Care Corrosion & Rust Inhibitors #1,483 in Oils & Fluids |
| Brand Name | POR-15 |
| Color | Gray |
| Color Code | 808080 |
| Container Type | Bottle |
| Coverage | 50 sq ft |
| Customer Reviews | 4.7 4.7 out of 5 stars (54) 4.7 out of 5 stars |
| Finish Type | Gloss |
| Included Components | Applicator |
| Is Waterproof | True |
| Item Form | Liquid |
| Item Volume | 32 fluid ounces |
| Manufacturer | POR-15 |
| Model Number | PB-3SS-4445204 |
| Paint Type | Oil |
| Part Number | 40104, 40204, 45004 |
| Size | 31.33 Fl Oz (Pack of 3) |
| Special Features | Chip Resistant, Crack Resistant, Rust Resistant, Scratch Resistant, Weather Resistant |
| Specific Uses For Product | Interior/Exterior |
| Surface Recommendation | Metal |
| Unit Count | 94 Fluid Ounces |
| Upc | 051491444521 |
| Water Resistance Level | Water Resistant |

## Images

![POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each - Image 1](https://m.media-amazon.com/images/I/81vhc2wDDlL.jpg)
![POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each - Image 2](https://m.media-amazon.com/images/I/91BkIfX6ViL.jpg)
![POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each - Image 3](https://m.media-amazon.com/images/I/61TTwi4NSwL.jpg)
![POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each - Image 4](https://m.media-amazon.com/images/I/6142jslqbBL.jpg)
![POR-15 Gray Stop Rust Undercoating System, 3 Products, 32 fluid ounces each - Image 5](https://m.media-amazon.com/images/I/61uRO8lg0ZL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Undercoating looks like new car
*by  on Reviewed in the United States June 26, 2026*

Does a great job. My husband was so impressed he did 3 cars! You do have to be a monkey to get under your car though. Also you should be told to cover your face as it kind of sprays your face and the cleaner burns your arms

### ⭐⭐⭐⭐⭐ Best there is.
*by  on Reviewed in the United States December 10, 2025*

Well, it's POR 15. What else is there to say? SUPER easy to use and apply. And so far, holds up like the parts are new.WELL worth the money.

### ⭐⭐⭐⭐ Great coating.
*by  on Reviewed in the United States June 13, 2026*

This stuff is amazing. If you follow the directions and prep the metal as you should and clean it. It will create a finish that is extreme tough and looks great. It goes on super easy, and smoothes out any brush strokes. It is pricey but well worth it. Only reason I didn’t give it 5 stars is the re-usability. This stuff costs so well it’s nearly impossible to open the can again. I had to drill a hole the next time I wanted to use it.

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-08-15*