Coolant Reservoir Tank With Overflow Tube - Replaces# 21710 -8J000, NI3014105, 603-614 - Fits 2002 - 2006 Nissan Altima 2.5L & 3.5L V6, 2002 - 2008 Nissan Maxima 3.5L V6 - Coolant Recovery Bottle TankCategory: Coolant Bottle CapThe coolant reservoir tank collects the heated coolant from the engine and recycles it back into the coolant system once it cools down. The coolant reservior bottle or tank works in sync with the radiator cap to protect the engine and prevent coolant loss due to overflow. Over time, your factory coolant reservoir tank may crack or break due to old age or overheating and coolant may leak out causing all sorts of problems to the engine. It is a simple but very important part of your cooling system. The coolant reservoir tank comes with the overflow tube and spring clamps. Fits the following vehicles: 2002-2006 Nissan Altima 2.5L & 3.5L V6 2002-2008 Nissan Maxima 3.5L V6 Replaces part numbers: 21710-8J000, NI3014105, 603-614, 217108J000, 603614, Dorman 603-614 This is a compatible replacement part manufactured by AA Ignition. This Coolant Reservoir Tank is NOT a genuine Nissan part. Nissan and their associated vehicle models are registered trademarks of their respective owners. These trademarks and part numbers are used in this listing only to identify the vehicles this Coolant Reservoir fits. AA Ignition is a registered trademark of GWA Auto Parts Inc.