2 Pack Rad Coolant Reservoir Cap For Infiniti And Nissan Radiator Overflow Tank Engine Water Cooling Cap Replacement Compatible With OEM 21712-79900 Black Finish Durable Car Cooling System Cap

2-Pack Infiniti/Nissan Radiator Overflow Cap
✔️ Compatible with OEM 21712-79900, black finish, durable cap

This radiator overflow cap is a 2-pack replacement designed to seal Infiniti and Nissan coolant reservoirs. It works with OEM cap threads and prevents leaks during engine operation, keeping the cooling system sealed for reliable performance.

✅ Replaces OEM cap numbers: 21712-79900, AM-4118851190, 10037044, 21712-3NA0A
✅ Material: durable black plastic with high-temperature resistance
✅ Easy twist-to-seal installation, no tools required
✅ Pack size: 2 caps per order

💡 What is a radiator overflow cap used for? This handy component helps seal the cooling system and prevent pressure-related leaks in the reservoir.

- seals the reservoir to prevent coolant leaks and maintain system pressure - prevents overflow during heat cycles and thermal expansion - compatible with OEM 21712-79900 cap families for Infiniti and Nissan - easy replacement with common hand tools