Two 1/4" NPT holes allow the fitment of a sensor and or air bleed. Should you only need one hole, a bung is included.

This simple, Adapter allows easy fitting directly into the top radiator hose.

Suits all temperature sensors with either a 5mm or a 6mm outside diameter and temperature gauge senders with ¼” NPT thread.

Note: This is an accessory for use with Part #0401, #0404, #0444 and #0500 Thermatic® Switches.

The adapter ends for hose fitting are 35mm in size.

With the use of DC 3mm adapter sleeve, this can be increased to 38mm (Part #18510)
With the use of DC 6mm adapter sleeve, this can be increased to 41-42mm (Part #18511)