YzusGomumu Radiator Coolant Overflow Reservoir Tank for Chevy/Buick 2013-2021 — Direct-Fit, Corrosion-Resistant Plastic

The YzusGomumu radiator coolant overflow reservoir tank replaces the factory overflow bottle to safely store excess coolant and help maintain stable engine temperatures.

This replacement coolant overflow tank is a direct-fit aftermarket part engineered for select Chevrolet and Buick compact models. Constructed from durable, corrosion-resistant plastic and molded to match OEM mounting points, it captures expanding coolant when the engine warms and returns it to the cooling system as temperatures fall. Before installing, confirm compatibility by checking the listed OE numbers and your vehicle’s model year.

Will this reservoir fit my Chevy or Buick model?

Yes — the tank is designed to fit multiple compact models across Chevrolet and Buick lineups produced between 2013 and 2021. Compatibility depends on engine size and production year, so confirming your vehicle’s specifications ensures correct fitment.

• Compatible models: 2013–2021 Buick Encore L4 1.4L
• Compatible models: 2013–2014 Chevrolet Tracker L4 1.8L; 2015 Chevrolet Tracker L4 1.4L
• Compatible models: 2013–2019 Chevrolet Trax L4 1.8L; 2013–2021 Chevrolet Trax L4 1.4L
• Check OE numbers: 95269001, 95201979, 95380033, 13502353, 603-955 for confirmation

How is this replacement tank built to last in the engine bay?

The reservoir is manufactured from high-strength, corrosion-resistant plastic selected for thermal and chemical durability in the engine compartment. Reinforced seams and precise molding reduce the risk of leaks and deformation under heat and pressure cycles, extending service life compared with worn original bottles.

• Robust plastic resists coolant chemicals and heat exposure
• Molded mounting points match factory locations for secure fit
• Seam construction minimizes leak risk under pressure
• Designed to withstand typical under-hood vibrations and movement

What do I get in the package and what should I verify before buying?

The package contains one radiator coolant overflow reservoir tank ready for installation. Prior to purchase, verify the OE part number and confirm your vehicle’s engine configuration and model year to avoid fitment issues. Additional hoses or clamps are not included unless specified by the seller.

• Includes: 1 x coolant overflow reservoir tank
• Confirm compatibility using OE numbers and vehicle year
• May require reuse of original mounting hardware and hoses
• Inspect for any necessary additional parts (caps, clamps) before installation

How does replacing a worn reservoir benefit my vehicle?

Swapping a cracked or leaking overflow tank restores the cooling system’s ability to manage expanding coolant, reducing the chance of fluid loss and air entering the system. A properly functioning tank helps maintain consistent coolant levels and contributes to stable operating temperatures during normal driving conditions.

• Prevents coolant leaks and visible under-hood fluid loss
• Helps preserve correct coolant level and system pressure balance
• Reduces risk of air pockets that can impair heater or cooling performance
• Maintains tidy under-hood appearance and factory routing

Who is this for: This YzusGomumu reservoir tank is intended for owners and DIY mechanics of compatible Chevrolet and Buick compact vehicles (Tracker, Trax, Encore) who need a durable OEM-style replacement. It suits drivers seeking a long-lasting, corrosion-resistant overflow bottle that fits factory mounting points. If you operate one of the listed models and notice cracks, coolant staining, or loss of coolant, this part provides a direct-replacement option — just verify OE compatibility and gather any small installation supplies before you begin.