GKTECH RADIATOR HOSE 1/8-27 NPT COOLANT TEMP ADAPTER (38MM) (Order in)NOTE: This item is specially ordered from GKTECH Australia and usually takes around 3 4 weeks to arrive. Listing is for: 1x Water temp sensor adapter with clamps When installing an aftermarket coolant temp gauge or setting up a header bleeder tank you'll need to tap into the return on your radiator hose. Simply cut a slit in your hose and insert this beautifully CNC machined aluminium piece. CNC machined aluminium and anodized black To suit 1 8 27 NPT