Replacement 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. Compatible Replacement for Nissan Vehicles - 2002 - 2006 Altima 2.5L & 3.5L V6 | 2002 - 2008 Maxima 3.5L V6 | The coolant reservoir tank is commonly located inside the engine bay beside the engine on your Altima or Maxima. Fits models with years 02, 03, 04, 05, 06, 07, 08. Replaces Part# 21710 -8J000, NI3014105, 603-614, 217108J000, 603614, 603-614 - 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 your vehicle specially the engine. It is a simple but very important part of your cooling system. OEM Fit, Quality, Finish - All mounting points on the reservoir tank are identical to your factory part. While this is not a genuine OEM part, it is a direct replacement part manufactured by AA Ignition. Save hundreds of dollars off of dealer prices by purchasing this part and replacing it yourself. Lifetime Warranty - This coolant reservoir tank comes complete with a Lifetime Warranty. If the coolant reservoir tank ever break or leak on your Altima or Maxima simply contact us for a replacement. See our website for full details. The 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 Altima 2.5L & 3.5L V6 2002-2008 Maxima 3.5L V6 Replaces part numbers: 21710-8J000, NI3014105, 603-614, 217108J000, 603614, 603-614 This is a compatible replacement part manufactured by AA Ignition. This Coolant Reservoir Tank is NOT a genuine OEM part. Vehicle makes 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.