Link ECU Water Temperature Sensor | 1/8 NPT Thread | Universal Engine Management Sensor

The Link ECU Water Temperature Sensor is a coolant temperature sensor designed for use with Link Engine Management ECUs — providing the ECU with accurate coolant temperature data for fuel and ignition calibration, cooling fan control, warm-up enrichment, and engine protection functions. Threaded with a 1/8 NPT (National Pipe Taper) fitting for installation into any coolant passage, thermostat housing, or radiator hose fitting with a 1/8 NPT port. Link Engine Management is one of the most respected standalone ECU brands in the performance aftermarket — a New Zealand brand with a global following among performance engine builders and professional tuners.

Key Features:

• Link ECU compatible — engineered for use with Link Engine Management ECUs — correct resistance curve and output characteristics for accurate coolant temperature reading on Link ECU platforms
• 1/8 NPT thread — 1/8 National Pipe Taper thread — compatible with any coolant passage, thermostat housing, or fitting with a 1/8 NPT port — one of the most common thread standards used across performance engine applications in North America
• Accurate coolant temperature measurement — provides the Link ECU with accurate coolant temperature data for correct warm-up enrichment, cooling fan control, and engine protection functions
• Universal fitment — correct for any engine application where a 1/8 NPT coolant temperature sensor port is available — not vehicle-specific
• Link quality — manufactured by Link Engine Management, one of the most respected standalone ECU brands in the performance aftermarket

Why Coolant Temperature Matters to the ECU:

The coolant temperature sensor is one of the most critical inputs to a standalone ECU — the ECU uses coolant temperature data for multiple calibration and control functions. Warm-up enrichment: a cold engine requires richer fuelling than a warm engine — the ECU uses coolant temperature to apply the correct warm-up enrichment as the engine comes up to operating temperature. Ignition timing: ignition timing is typically retarded on a cold engine and advanced as the engine warms — coolant temperature is the primary input for this correction. Cooling fan control: the ECU uses coolant temperature to trigger the cooling fan at the correct temperature threshold. Engine protection: the ECU can use coolant temperature to trigger overtemperature warnings, reduce boost, or cut fuel if coolant temperature exceeds safe limits. An accurate, correctly-calibrated coolant temperature sensor is essential for all of these functions — an incorrect or poorly-calibrated sensor will cause incorrect fuelling, incorrect timing, and potential engine damage.

1/8 NPT Thread — Installation Options:

The 1/8 NPT thread is one of the most common thread standards in North American performance engine applications — many aftermarket thermostat housings, coolant manifolds, and radiator hose fittings include 1/8 NPT sensor ports specifically for coolant temperature sensors. If your engine's coolant system does not have an existing 1/8 NPT port, a 1/8 NPT weld bung or thread adapter can be installed in the thermostat housing, coolant manifold, or a suitable coolant passage to provide the correct mounting point for the sensor. Note: 1/8 NPT and 1/8 BSP are not interchangeable — NPT uses a 60° thread angle while BSP uses 55° — verify your fitting is 1/8 NPT before ordering.

Specifications:

• Brand: Link Engine Management
• Part Number: 101-0076
• Sensor Type: Coolant / water temperature sensor
• Thread: 1/8 NPT (National Pipe Taper)
• Application: Universal — Link ECU installations
• ECU Compatibility: Link Engine Management ECUs (G4+, G4X, and compatible platforms)

Fitment Information:

• Universal — any engine application with a 1/8 NPT coolant temperature sensor port
• Designed for use with Link Engine Management ECUs — verify sensor resistance curve compatibility with your specific Link ECU and calibration before ordering
• Note: 1/8 NPT and 1/8 BSP are not interchangeable — verify your fitting thread standard before ordering. If your engine does not have an existing 1/8 NPT coolant sensor port, a 1/8 NPT weld bung or thread adapter will be required. The sensor must be calibrated in the Link ECU software for correct temperature readings — refer to Link's sensor calibration documentation for the correct calibration table for this sensor.

What's Included:

• Link ECU water temperature sensor — 1/8 NPT (101-0076)
• Refer to Link Engine Management's product documentation for wiring and calibration specifications

Installation Notes:

• Install the sensor into a 1/8 NPT port in the coolant system — thermostat housing, coolant manifold, or radiator hose fitting — in a location that provides accurate coolant temperature measurement (not in a dead-flow area)
• Apply PTFE thread tape or thread sealant to the sensor threads before installation — NPT threads rely on thread sealant for a leak-free seal
• Torque the sensor to the correct specification — do not overtighten — the sensor body can be damaged by excessive torque
• Wire the sensor to the correct coolant temperature input on the Link ECU — refer to the Link ECU wiring diagram for the correct pin assignment
• Calibrate the sensor in the Link ECU software using the correct calibration table for this sensor — an uncalibrated or incorrectly calibrated coolant temperature sensor will cause incorrect fuelling and timing corrections
• Verify correct coolant temperature readings in the Link ECU software after installation — compare the ECU's coolant temperature reading to a known reference (infrared thermometer or factory gauge) to confirm correct calibration

Why Link Engine Management?

Link Engine Management is one of the most respected standalone ECU brands in the performance aftermarket — a New Zealand brand with a global following among performance engine builders, professional tuners, and motorsport teams. Link's G4+ and G4X ECU platforms are trusted for their feature set, tuning flexibility, and reliability across a wide range of performance engine applications. Link's sensors and accessories are engineered to work correctly with their ECU platforms — correct resistance curves, correct connector types, and correct calibration data for accurate, reliable sensor readings. For Link ECU installations that require a quality coolant temperature sensor with 1/8 NPT thread, 101-0076 is the correct choice.

Perfect For:

• Link ECU installations (G4+, G4X, and compatible platforms) that require a coolant temperature sensor with 1/8 NPT thread for installation in a thermostat housing, coolant manifold, or radiator hose fitting
• Custom engine builds and engine swaps where a standalone ECU coolant temperature sensor is required and a 1/8 NPT port is available or can be added to the coolant system
• Replacement coolant temperature sensors for existing Link ECU installations where the original sensor has failed or requires replacement

Note: 1/8 NPT thread — not BSP. NPT and BSP are not interchangeable — verify your fitting thread standard before ordering. Designed for Link ECU platforms — verify resistance curve compatibility with your specific ECU before ordering. Calibrate sensor in Link ECU software after installation. Apply PTFE thread tape or sealant before installation. Install in a location with active coolant flow for accurate temperature measurement.