Coolant Overflow Reservoir Cap 16405-31070 & 16405-0P040 - Engine Overflow Tank Cap Compatible with Toyota Sienna 2011-2020, Lexus RX350 RX450h 2010-2015 - Cap Sub-Assy, Reserv Replacement
Perfect Compatibility - Directly replaces OEM part numbers 16405-0P140 and 16405-31100, ensuring a precise fit for Toyota Highlander 2014-2019 and Lexus RX350 RX450h 2016-2022.
Reliable Seal & Leak Prevention - Designed for a tight and secure fit, this reservoir cap prevents coolant leaks, maintains proper system pressure, and helps protect the engine from overheating.
Robust & Heat-Resistant Material - Crafted from high-quality plastic and rubber, this tank cap withstands extreme temperatures and resists corrosion for long-lasting performance in harsh conditions.
Quick & Easy Installation - No tools or modifications required. Simply twist off the old cap and install the new one in seconds for a hassle-free replacement.
OE-Quality Performance - Manufactured to meet or exceed factory standards, providing the same function and reliability as the original cap at a fraction of the cost.