If your coolant reservoir cap is cracked, leaking, or just not sealing right, this replacement is an easy fix. Designed specifically for the Toyota Sienna (2004-2010) and Lexus RX 350 (2004-2009), it matches OEM part number 16471-0A030. Made from durable, corrosion-resistant plastic, it’ll keep your cooling system sealed and prevent overflow or contamination.
Installation is straightforward: just remove the old cap and press this one on firmly. No tools or adjustments needed. It helps maintain proper pressure in the system, which is important for engine performance and safety.
Note: This is an aftermarket part, not OEM, but it’s built to fit and function like the original. Always double-check your vehicle year and model before ordering. Keep your cooling system running smoothly with a reliable, affordable replacement cap.
