Lazenta Radiator Overflow Bottle Coolant Reservoir for Infiniti QX80/QX56 & Nissan Armada (2011–2020) with Cap & Hose, OE Fit

The Lazenta 217101LA1A radiator overflow bottle is a direct-fit coolant reservoir assembly—complete with cap and hose—designed to replace worn tanks on compatible Infiniti and Nissan models.

If your vehicle is showing coolant loss, or the original overflow bottle is cracked, discolored, or leaking, this Lazenta replacement restores storage capacity and pressure regulation for the engine cooling system. It is engineered to match OE fitment for Infiniti QX80 (2014–2019), Infiniti QX56 (2011–2013), and Nissan Armada (2017–2020), using the replacement numbers 217101LA1A and 21710-1LA1A for cross-reference.

How does this overflow bottle help my vehicle’s cooling system?

The reservoir provides a reserve of coolant for the radiator and helps maintain proper pressure and fluid balance as engine temperatures change. It also vents trapped air and reduces the chance of air locks that can impair circulation.

• Stores excess coolant when the system expands during heat cycles.
• Returns coolant when the system cools to maintain level and pressure.
• Includes venting paths to reduce air pockets that hinder flow.
• Works with the cap to help stabilize operating pressure.

Will this part fit my Infiniti QX80, QX56, or Nissan Armada?

The Lazenta assembly is made to match the mounting points, hose locations, and overall dimensions expected for the listed model years. Confirm fit by matching your vehicle’s year and the OEM or replacement numbers—217101LA1A or 21710-1LA1A—before ordering.

• Compatibility: Infiniti QX80 2014–2019 models.
• Compatibility: Infiniti QX56 2011–2013 models.
• Compatibility: Nissan Armada 2017–2020 models.
• Use the replacement numbers for cross-referencing during installation.

What are the build and durability features of this reservoir?

This reservoir is manufactured with attention to durability and thermal stability, using materials and design features that resist vibration and thermal cycling. Each unit is tested at the factory to verify performance before shipping.

• Wide temperature stability suitable for engine bay environments.
• Anti-vibration design to reduce stress at mounting points and hose connections.
• Simple construction for reliable long-term service and easier replacement.
• Supplied with hose and cap to simplify installation and inspection.

How easy is installation and ongoing maintenance?

Installation is straightforward for anyone with basic mechanical skills and common hand tools; the reservoir bolts into existing mounts and connects to the original coolant hose routing. Routine visual checks through the translucent tank make it easy to monitor coolant level and system health.

• Direct-fit design for original mounting points and hose routing.
• Supplied cap and hose minimize additional parts required.
• Translucent material allows quick visual level inspection.
• Replaceable with basic tools; professional help recommended if unsure.

Who is this for? This Lazenta radiator overflow bottle is intended for owners or technicians working on Infiniti QX80 (2014–2019), Infiniti QX56 (2011–2013), or Nissan Armada (2017–2020) who need a reliable, factory-tested replacement reservoir. It suits drivers replacing a cracked, leaking, or discolored tank, fleet managers minimizing downtime, and DIY mechanics seeking a straightforward, OEM-compatible part to restore proper coolant storage and pressure regulation.