URO GM0517575 Replacement Expansion Tank Cap

The URO GM0517575 Expansion Tank Cap is a replacement coolant expansion tank cap (also called a coolant reservoir cap or coolant recovery bottle cap) for a vehicle's cooling system.

What it does:

• Seals the expansion tank to keep coolant in and dirt out
• Holds pressure in the cooling system, which raises the coolant's boiling point and helps prevent overheating
• Replaces a worn, cracked or leaking cap to restore the cooling system seal

Replace the cap only when the system is cool.