---
product_id: 17035366
title: "CRC Knock'er Loose Plus Penetrating Solvent- 11.5 wt. oz."
brand: "crc"
price: "S/.172"
currency: PEN
in_stock: true
reviews_count: 13
url: https://www.desertcart.pe/products/17035366-crc-knocker-loose-plus-penetrating-solvent-11-5-wt-oz
store_origin: PE
region: Peru
---

# Dissolves rust & corrosion on bolts & fittings Freeze-shock tech rapidly contracts metal 50-state compliant, safe for no-flame zones CRC Knock'er Loose Plus Penetrating Solvent- 11.5 wt. oz.

**Brand:** crc
**Price:** S/.172
**Availability:** ✅ In Stock

## Summary

> ❄️ Unlock stuck bolts like a pro—no heat, no hassle!

## Quick Answers

- **What is this?** CRC Knock'er Loose Plus Penetrating Solvent- 11.5 wt. oz. by crc
- **How much does it cost?** S/.172 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/17035366-crc-knocker-loose-plus-penetrating-solvent-11-5-wt-oz)

## Best For

- crc enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** CRC’s market-leading formula with 4.6-star user acclaim
- • **Generous 11.5 oz Can:** Long-lasting spray for multiple heavy-duty maintenance jobs
- • **Safe for Sensitive Zones:** No-flame formula ideal for fuel and brake lines
- • **Instant Rust-Busting Power:** Freeze-shock technology cracks rust for fast loosening
- • **Versatile Industrial Strength:** Perfect for bolts, locks, hinges, and frozen components

## Overview

CRC Knock'er Loose Plus is an 11.5 oz aerosol penetrating solvent featuring advanced freeze-shock technology that rapidly contracts metal to break rust bonds. Its 50-state compliant, no-flame formula safely loosens frozen bolts, fittings, and machinery parts, making it a trusted industrial-grade solution for maintenance professionals and DIYers alike.

## Description

You know the moment: the bolt won't budge, the line's down, and every minute costs more than you want to admit. You don't need promises- you need movement. CRC Knock'er Loose Plus uses freeze-shock technology to rapidly lower the temperature of the metal, causing it to contract. This cracks the rust and creates space for the industrial strength solvent to rapidly break the bond. For use om no-flame zones, it's the go-to when heat isn't an option.

Review: Witchcraft in a spray can - Had a saw get seized up. Shot some of this into the piston and I managed to break it free. Best part is I still had compression and she still works like a horse. Originally got this for stubborn bolts
Review: The best I've used so far at getting heavily rusted nuts/bolts apart - For $15 I was blown away at how well this stuff works. I needed to replace some exhaust parts on a nearly 20 year old car and the studs were completely rusted and looked like they would need to be cut out. I sprayed this on all of them and let it sit for a couple of hours before trying to remove them, fully expecting to break at least one of the studs off due to corrosion. Instead, when I came back a lot of the crusty looking rust was gone and after working the nuts back and forth I got all of them off without issue and was able to reuse them. It's an expensive spray but that bottle is a decent size and it sprays on easily. Whatever is in it works extremely effectively at lubricating through the rust and letting you get heavily rusted nuts off. Long story short, I highly recommend this stuff.

## Features

- CRC INDUSTRIES: A market leader that offers impeccably designed chemical solutions to maintain, protect and repair different marine, heavy-duty motor vehicles, industrial-grade engines, household tools and electrical equipment.
- PENETRATING SOLVENT: Best for freezing fasteners in fuel/brake lines or no-flame zones.
- UNIQUE FORMULA: Knock’er Loose offers a 50-state compliant formula that provides great performance in easing the disassembly of tools, automobile engines, plant machinery, and other equipment for routine maintenance.
- APPLICATIONS: Knock’er Loose works effectively to dissolve and loosen rust and corrosion from couplings, bolts, fittings, locks, washers, sliding mechanisms, hinges, bushings, nuts, and other frozen components.
- PRODUCT SPECIFICATIONS: This product is available in a 11.5 wt oz aerosol can.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0013IZS1O |
| Best Sellers Rank | #33,304 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #195 in Industrial Lubricants #1,002 in Oils |
| Brand | CRC |
| Brand Name | CRC |
| Container Type | Can |
| Customer Reviews | 4.6 out of 5 stars 521 Reviews |
| Flash Point | 64 °C |
| Global Trade Identification Number | 00078254030272 |
| Included Components | Super Penetrant |
| Item Form | Spray |
| Item Type Name | Super Penetrant |
| Item Weight | 13.28 ounces |
| Liquid Volume | 11.5 fluid ounces |
| Manufacturer | CRC Industries |
| Material | Specialty compound |
| Model Number | 03027 |
| Number of Items | 1 |
| Package Information | Can |
| Part Number | 3027 |
| Recommended Uses For Product | Electrical |
| Specific Uses For Product | Prevent Corrosion |
| UPC | 078254030272 |
| Unit Count | 11.5 Ounce |

## Product Details

- **Brand:** CRC
- **Item Weight:** 13.28 ounces
- **Liquid Volume:** 11.5 fluid ounces
- **Material:** Specialty compound
- **Package Information:** Can

## Images

![CRC Knock'er Loose Plus Penetrating Solvent- 11.5 wt. oz. - Image 1](https://m.media-amazon.com/images/I/51HRrmsV6DL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Witchcraft in a spray can
*by T***G on July 7, 2026*

Had a saw get seized up. Shot some of this into the piston and I managed to break it free. Best part is I still had compression and she still works like a horse. Originally got this for stubborn bolts

### ⭐⭐⭐⭐⭐ The best I've used so far at getting heavily rusted nuts/bolts apart
*by A***A on October 15, 2025*

For $15 I was blown away at how well this stuff works. I needed to replace some exhaust parts on a nearly 20 year old car and the studs were completely rusted and looked like they would need to be cut out. I sprayed this on all of them and let it sit for a couple of hours before trying to remove them, fully expecting to break at least one of the studs off due to corrosion. Instead, when I came back a lot of the crusty looking rust was gone and after working the nuts back and forth I got all of them off without issue and was able to reuse them. It's an expensive spray but that bottle is a decent size and it sprays on easily. Whatever is in it works extremely effectively at lubricating through the rust and letting you get heavily rusted nuts off. Long story short, I highly recommend this stuff.

### ⭐⭐⭐⭐⭐ Gets the tough stuck fasteners broken loose quicker with less wrenching/cussing!
*by M***T on November 12, 2025*

Seems to work better than other penetrating sprays. I plan to use it as my "first choice" from now on given the positive results so far!

## Frequently Bought Together

- CRC Knock’er Loose Plus Penetrating Solvent 03027 – [Reddish] 11.5 WT. Oz., Industrial Grade Penetrating Solvent and Lubricant w/ Freeze Shock Action
- CRC Knock’er Loose Penetrating Solvent 03020 – [Reddish] 13 WT. Oz., Industrial Grade Penetrating Solvent and Lubricant
- CRC Freeze-Off Super Penetrant, 11.5 oz

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-08-01*