LIQUI MOLY · New
LIQUI MOLY 250mL Radiator Stop-Leak
MPN 20132 · Store SKU lqm20132
Supplier stock checked 11/7/2026, 10:14:21 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
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. 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. Radiator Stop Leak
Manufacturer fitment & guides
Check 20132 against the manufacturer’s application information below.
Part-specific notes
- Ground shipping only.
- California Proposition 65: Y