Sale

Heating and Cooling Radiators

LIQUI MOLY

LIQUI MOLY 250mL Radiator Stop-Leak

$191.40 $11.78 Save $179.62

SKU: L001 20132

In Stock
In Stock
Ships by Sep 19
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item

Overview

It effectively seals hairline cracks, porous solder joints, and external damage. This product also prevents coolant from entering the combustion chamber due to internal leaks.

Radiator Stop Leak is compatible with conventional coolants and antifreezes and is safe for use with aluminum and plastic radiators. It does not react with oxygen or heat, ensuring it will not impede system flow or cause overheating. The 250 ml bottle is sufficient for up to 10 liters of coolant.
Show original supplier description

Part #: 20132

Will immediately seal small leaks caused by external damage, porous solder joints and hairline cracks in cooling systems of all water cooled engines. Coolant is prevented from entering the combustion chamber due to internal leaks from head gasket etc. It does not react with oxygen or heat and will never prevent system flow or cause overheating. Radiator Stop Leak works as long as its in the coolant.

Features:

  • Compatible With Conventional Coolant Water Refiners And Antifreezes
  • Suitable For Aluminum Radiators
  • Permanently And Reliably Seals Hairline Cracks And Small Leaks
  • No Negative Side Effects On The Water Pump Or Heating Circuit
  • For Preventive Use

For water based cooling system with or without filters. Safe with aluminum or plastic radiators. One can is sufficient for 10 liters (2.6 gal.) of coolant. Compatible with most types of coolant or anti-freeze. May be used as a preventive.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandLIQUI MOLY
Part NumberL001 20132

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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