This radiator overflow bottle, also known as a coolant expansion tank, is located in the engine bay, typically mounted to the inner guard. It functions as a reservoir for coolant that expands from the radiator as the engine reaches operating temperature. As the engine cools, a vacuum is created, drawing the coolant back into the radiator, ensuring the system remains full and free of air.
Over time, the original plastic bottle is exposed to constant heat cycles, causing it to become brittle, yellowed, and prone to cracking. This can lead to coolant leaks and makes it impossible to accurately check the coolant level. Replacing a failing overflow bottle is crucial for maintaining the health of your vehicle's cooling system.
Failure to replace a cracked or leaking overflow bottle can result in a gradual or sudden loss of engine coolant. This can introduce air into the cooling system, leading to inefficient cooling and, ultimately, engine overheating. Severe overheating can cause catastrophic engine damage, such as a warped cylinder head or blown head gasket, resulting in costly repairs.
This part has been designed to fit
Please check vehicle fitment to confirm compatibility with your vehicle. Please contact us with your VIN details if you require further assistance to confirm fitment.
Patrolapart is a leading supplier of quality aftermarket, genuine, and reconditioned parts for the Nissan Patrol. With a focus on durability, performance, and value, our parts are trusted by 4WD enthusiasts and professional mechanics across Australia.
Bottle itself okay for a (very) cheap replacement vs factory - Just check the hoses, my one arrived with them fitted to the cap reversed.
The bolt spacing didn't fit my 1998 GQ patrol Ute but only the bottom hole didn't line up, I still used it. and it seemed fairly sturdy.
