RADIATOR FILLER NECK INLINE 1-1/2in BILLET BLACK

These in-line radiator filler adaptors provide a high positive fill point to help keep air out of your cooling system at all times. Constructed from 6061-T6 aluminium, they have 2 x 1/8in NPT ports for the overflow and 1.50in outlet ports with large 42 mm cap provision. Comes with an NPT to 8 mm barb side outlet.