Overflow coolant tank caps are designed to fit OEM coolant tanks with a threaded fill neck
Complete replacement caps are machined from billet aluminum, with a polished surface comes with pressure cap.
Scalloped design, making them the perfect complement to any engine bay. A clear anodized finish adds shine and durability.
Coolant reservoir cap is a great way to give your engine a custom look.
Cap Size: 1.5" /38mm, 2"/49mm, 2.5"/63mm.(Please buy according to your needs and the size in the picture).