ISR Performance Universal Coolant Temp Adapter - 34mm

The ISR Performance universal 34mm coolant temp adapter gives you a place to mount an aftermarket water temperature sensor when the engine has no spare port. It splices into a 34mm (1 3/8 inch) radiator hose and provides a 1/8 inch NPT threaded fitting, which is the common thread used by most aftermarket gauge and standalone ECU sensors.

Kit contents

• 1 inline adapter with a 1/8 inch NPT sensor fitting
• 2 hose clamps

Sizing

This adapter is sized for a 34mm radiator hose, which is equivalent to a 1 3/8 inch inside diameter. Measure the inside diameter of the hose you plan to cut before ordering; an adapter that is too small will not seal, and one that is too large will not fit the hose.

How to use it

Cut the radiator hose at a straight section with enough room on either side for the clamps, slide the adapter in, and tighten both clamps. Thread the sensor into the 1/8 inch NPT port with an appropriate sealant, then refill and bleed the system. Reading coolant temperature in the hose gives you a reliable, fast-responding number for a gauge or data logger, and it avoids drilling or tapping an existing housing.

All ISR Performance products are designed for off-road use only.