Mounting Boss (IAT1-8MS) Link ecu Sale! from 2500 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Weld in steel boss, 1/8" BSP Thread. Suitable for mounting Intake air temperature (IAT1-8), Coolant Temperature sensors (NTC1-8) and other sensors that use 1/8" BSP Thread.