This high-quality coolant reservoir is a perfect fit for your 2006-2011 Hyundai Accent or Kia Rio/Rio5. Made of durable aluminum, it comes with a 10-year manufacturer warranty and has been thoroughly tested for leaks and durability. The reservoir has a 5cm outlet diameter and is designed for placement in the engine compartment without the need for drilling or modifications. Included in the package is a cap and the OE/OEM part number is 671. Please note that this product contains chemicals that may cause cancer or reproductive harm and is subject to California's Proposition 65 warning. This product is not intended for universal fitment or performance upgrades. Trust this reliable and safe coolant reservoir for your car's engine cooling needs.