Sealey cooling system vacuum purge refill kit sealey vs0042 dramatically reduces cooling system refill time without mess and without introducing air locks no more time consuming cooling system bleeding and no more messy spills to clean up simply plug into the workshop air line attach to the cooling system header tank and create a vacuum complete the process by attaching the filler hose and opening the valve allowing your pre mixed coolant to flow into the system supplied with 3 adapto