---
product_id: 254870437
title: "243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799)"
brand: "loctite"
price: "AR$57820"
currency: ARS
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.ar/products/254870437-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high-temperature
store_origin: AR
region: Argentina
---

# Medium-strength bond for reliable fastening Fast curing in 10 minutes, full cure in 24 hours Oil tolerant for tough automotive environments 243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799)

**Brand:** loctite
**Price:** AR$57820
**Availability:** ✅ In Stock

## Summary

> 🔩 Lock it down, loosen it up — the pro’s choice for every bolt!

## Quick Answers

- **What is this?** 243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799) by loctite
- **How much does it cost?** AR$57820 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/254870437-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high-temperature)

## Best For

- loctite enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Cure Time:** Sets in just 10 minutes to keep your projects moving
- • **Multi-Application Power:** Ideal for bolts 6mm to 20mm across critical automotive parts
- • **Trusted by Professionals:** OEM-specified and lab-tested for race-grade reliability
- • **Service-Friendly Strength:** Medium strength bond removable with standard hand tools
- • **Versatile Metal Compatibility:** Works flawlessly on stainless steel, aluminum, and plated surfaces

## Overview

LOCTITE 243 is a blue, medium-strength threadlocker designed for automotive use, offering oil tolerance and reliable adhesion on all metals including passive substrates. It cures anaerobically within 10 minutes and fully in 24 hours, providing a removable yet secure bond for fasteners between 6mm and 20mm. Trusted by OEMs and professional mechanics alike, it ensures vibration resistance and easy maintenance with hand tools.

## Description

LOCTITE 243 is a general purpose, medium strength, primerless, blue threadlocker with improved oil tolerance . For fasteners between 1/4" to 3/4" (6mm to 20mm). Parts can be separated using hand tools. LOCTITE 243 is a general purpose threadlocker that provides a medium strength bond. This product works on all metals, including passive substrates such as stainless steel, aluminum, and plated surfaces. It is proven to be tolerant of minor contamination. STEADFAST ADHESION LOCTITE 243 is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. Suitable for applications on less active substrates such as plated surfaces, where disassembly with hand tools is required for servicing. LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Engines of nearly every professional race car are assembled and maintained with LOCTITE brand adhesives, sealants, gasket makers, and coatings. Whether gasoline or diesel, from bolts and gaskets to cooling lines and core plugs, Henkel products are used to seal, secure, and repair vehicle components.

## Features

- OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.
- RELIABLE ADHESION. Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces) with improved oil tolerance.
- REMOVABLE WITH HAND TOOLS. Well suited for automotive and other applications where maintenance or servicing is required.
- MULTI-PURPOSE APPLICATIONS. Rocker studs, rocker adjustment bolts, bolts on valve and cam covers, oil pans, disc brake calipers, intakes and alternators, and pulley assemblies. Ideal for all nut and bolt applications ¼" to ¾" (6 mm to 20 mm).
- CONVENIENT CURING. Sets in just 10 minutes & is fully cured in 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B004L439FE |
| Best Sellers Rank | #8,180 in Automotive (See Top 100 in Automotive) #54 in Automotive Fillers, Adhesives & Sealants |
| Brand Name | LOCTITE |
| Color | Blue |
| Compatible Material | Metal |
| Container Type | Tube |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,203) 4.8 out of 5 stars |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340439078 |
| Included Components | (1) 243 Threadlocker for Automotive, Blue, 6-ml |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | automotive-thread-lock-sealers |
| Item Weight | 18 g |
| Manufacturer | Loctite |
| Material Type | Aluminum,Stainless Steel |
| Model | 1330799 |
| Number Of Pieces | 1 |
| Other Special Features Of The Product | Oil Tolerant, Medium Strength Bond, Removable with Hand Tools, Improved Adhesion on Various Metals and Passive Substrates |
| Part Interchange Info | 1330799 |
| Part Number | 1330799 |
| Specific Uses For Product | Automotive |
| Upc | 079340439078 |
| Viscosity Level | High |
| Volume | 6 Milliliters |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** LOCTITE
- **Item form:** Liquid
- **Material:** Aluminum,Stainless Steel
- **Specific uses for product:** Automotive

## Images

![243 Threadlocker for Automotive: Medium-Strength, Oil Tolerant, High-Temperature, Anaerobic, General Purpose | Blue, 6 ml Red Tube (PN: 1330799) - Image 1](https://m.media-amazon.com/images/I/81InQQNOf1L.jpg)

## Available Options

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

## Questions & Answers

**Q: is there a loctite that resists gasoline ?**
A: Most of our Loctite anaerobic sealants and threadlockers will resist gasoline once they're fully cured. The right product will depend on your application requirements. Please call 1-800-LOCTITE (562-8483) to receive a product recommendation from one of our engineers.

**Q: How do I open the Loctite 243 bottle?**
A: You simply twist the cap and it should open.

**Q: Is this good to use on battery cable bolts?**
A: Yes this can be used on the threads.  Loctite 243 is a plastic so keep it off the post where good electrically conductive contact is required.
I am thinking a car battery here.   If this is a different design and IF THIS  THREADED ASSEMBLY REQUIRES ELECTRICALLY CONDUCTIVY DO NO USE OUR PLASTIC THREADLOCKER IT WILL INSULATE AND GENERATE RESISTANCE.

**Q: Can this still be effective on a bolt that is threaded, left to sit, and then threaded again to torque spec?**
A: Left for set how long? When you remove the bolt, if it's still wet then yes, but I would wipe it off and reapply because I would want a thicker application for a tighter bond.

## Customer Reviews

### ⭐⭐⭐⭐⭐ good
*by  on Reviewed in Australia 21 October 2021*

good

### ⭐⭐⭐⭐⭐ Handy threadlocker for gym gear
*by  on Reviewed in the United States 11 August 2026*

I used it on my son’s skateboard truck bolts after they kept backing out and they finally stayed tight. i like that it works on oily threads in the garage too, reallly saves me redoing stuff.

### ⭐⭐⭐⭐⭐ Good stuff, really works better than the 242 on stainless and oily environment
*by  on Reviewed in Canada 21 September 2015*

The 243 formula really makes a difference when used on stainless and other corrosion resistant metals, even with oil or grease contamination, like that you often get in tap holes of anything mechanical like engine, bikes, gears and sprockets, motors, etc. Using the 242, I often observed very poor, if not total lack of thread locking, when using stainless fasteners or in a shop environment, anywhere around greasy or oily parts. With the 243, I still yet to have a failure in thread locking and I've been using it for over a year now.36mL is a lot cheaper than the 6mL tube and no, it won't go to waste because you used it once a year ago and are afraid it's no good anymore. Simply cap it off properly and it's gonna remain usable for a very long time. Don't forget to shake it up before using it that day, just like you would shake and stir your paint before painting.

## Frequently Bought Together

- LOCTITE 243 Automotive Threadlocker Blue - Medium Strength Thread Lock, General Purpose, Oil Tolerant - 6 ml, 1 Pack
- LOCTITE 263 Automotive Threadlocker Red – High Strength Thread Lock, General Purpose Applications, Oil Tolerant, Fluorescent - 6 ml, 1 Pack
- Loctite 38653 222 Purple Low Strength Thread Locker Tube - 6 ml

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**Shop now:** [https://www.desertcart.com.ar/products/254870437-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high-temperature](https://www.desertcart.com.ar/products/254870437-243-threadlocker-for-automotive-medium-strength-oil-tolerant-high-temperature)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-11-06*