Installing a JOES Expansion Tank will help keep your engine cool!
A ¼" NPT fitting is welded in at the top for an air bleed line, a ½" pipe fitting for a line to your water pump is near the bottom and an 1/8" fitting for water overflow is provided in the 6061-T6 billet aluminum filler cap housing. Fabricated from 5052 aluminum.

Recovery Tank, Coolant, 5-1/4 x 2-3/4 x 6-1/4 in Tall, 1/4 in NPT Inlet, 1/2 in NPT Outlet, 1-1/2 in Tube Mount, Aluminum,
Tank holds .28 US Gallons or 1.06 liters of fluid, approximately.