MAG 1 Cooling System Stop Leak
MAG1
This product is not available for purchase online.
Features
Overview
MAG 1 Cooling System Stop Leak is a concentrated additive that seals leaks in radiators, hoses, gaskets, and heater cores without clogging the system. Poured directly into the cooling reservoir, it forms a durable seal to prevent coolant loss, restoring pressure and efficiency—reliable gear that patches up overheating woes without a full flush or tow.
Why You’ll Love It
- Quickly plugs small leaks to stop coolant drips and top-ups
- Safe for all coolant types, including extended-life formulas
- One-bottle treatment works on cars, trucks, and heavy machinery
Built for Real Work
Formulated with premium sealants that swell and repair without residue or blockages, this additive handles high-heat and pressure like a pro. It's tough on pinholes and cracks but gentle on pumps and sensors—proper kit for the tradie's overheating ute mid-job, straightforward enough for the driveway fix, just pour in, run the engine, and watch it hold.
Perfect For
- Tradies keeping fleet vehicles running on remote sites
- DIYers patching radiator issues before bigger repairs
Recommended Products
Here's What Our Customers Are Saying
Articles
Stay in the Know - No Spam, No BS.
We know you're here for great products, not junk emails. Sign up to get exclusive access to product sales, special offers, and new arrivals - all delivered straight to your inbox with zero fluff. We promise to only send you the good stuff, when it matters.
Exclusive Deals
Be the first to hear about flash sales and discounts on your favorite hardware, tools, and garden supplies.
New Products
Stay ahead of the curve with updates on the latest arrivals across our extensive range.
Project Tips
Get expert advice, DIY hacks, and how-tos that help you tackle every task with confidence.
No spam. No BS. Just the best from Khardware.
Sign up today and start saving!













