Prestone AS145 Stop Leak seals radiator leaks while protecting against corrosion for longer cooling system life.
Prestone AS145 Stop Leak seals radiator leaks while protecting against corrosion for longer cooling system life.

Prestone AS145 Stop Leak 11 oz — Seals Radiators, Heater Cores & Hoses

Overview Prestone AS145 Stop Leak is a patented formula designed for quick, durable sealing of leaks in...
Vendor: Prestone
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Prestone AS145 Stop Leak seals radiator leaks while protecting against corrosion for longer cooling system life.

Prestone AS145 Stop Leak 11 oz — Seals Radiators, Heater Cores & Hoses

£28.97
Prestone AS145 Stop Leak seals radiator leaks while protecting against corrosion for longer cooling system life.

Prestone AS145 Stop Leak 11 oz — Seals Radiators, Heater Cores & Hoses

£28.97
Description
Description
x

Overview

Prestone AS145 Stop Leak is a patented formula designed for quick, durable sealing of leaks in your cooling system. The blend combines natural and synthetic components with fibrous particles—the same materials used in bulletproof vests—to form a seal without restricting flow.

In addition to stopping leaks, it boosts corrosion inhibitors to guard against pitting and corrosion, common culprits behind radiator leaks. The formula targets leaks in radiators, water pumps, and heater cores, helping maintain coolant flow and overall system integrity.

Key benefits

  • Quickly stops leaks in radiators, water pumps, and heater cores.
  • Boosts corrosion inhibitors to protect against pitting and corrosion.
  • Seals leaks up to 0.020 in x 0.5 in.
  • Seals large leaks without interfering with coolant flow.
  • Addresses the leak and the corrosive condition that causes it.

Real-world use cases

Designed for everyday cooling systems, this 11 oz bottle fits many passenger vehicles and light trucks. It provides a convenient option when minor leaks appear in aging radiators or hoses, or when heater core issues are suspected.

  • Ideal for preventive maintenance to reduce the chance of coolant loss.
  • Useful when you notice damp spots or steam near the engine bay.
  • Can be part of routine roadside maintenance for a faster, non-invasive fix.

Usage tips

Follow the product label for instructions. If you are unsure, consult a professional. Ensure the cooling system is cooled before opening, and refill with the appropriate coolant after treatment.

FAQ

Q: What does Prestone AS145 Stop Leak do?

A: It quickly seals leaks in radiators, water pumps, and heater cores while boosting corrosion inhibitors to help prevent further damage.

Q: Where can I use Prestone AS145 Stop Leak?

A: It works with radiators, water pumps, and heater cores to seal leaks and reduce corrosive wear.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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