SPAL Variable Temperature Control Sensor (175-195 Degree) for Brushless Fans

Precision Fan Trigger for Mid-Range Cooling Systems

The SPLSBL-TSI-195P-PKG is SPAL's variable temperature control sensor package for brushless cooling fans, calibrated to an activation range of 175 to 195 degrees Fahrenheit. With a 3/8 in. NPT threaded body, the SPLSBL-TSI-195P-PKG installs directly into a radiator port or coolant passage and connects to the SPAL brushless fan controller harness without additional relays or switching hardware. This mid-range thermal trigger is a natural fit for engines running lower thermostat ratings or vehicles requiring fan engagement before reaching higher coolant thresholds.

Key Features

• Variable temperature activation range: 175 to 195 degrees Fahrenheit, suited for lower thermostat or cooler running engine builds
• 3/8 in. NPT thread for compatibility with standard radiator and manifold sensor ports
• Designed exclusively for SPAL brushless fan systems, ensuring correct signal output to the fan controller
• Plug-and-play installation into SPAL brushless fan wiring harness, no relay or additional switching hardware required
• Adjustable activation threshold allows tuning within the rated range to match your cooling system target
• MSRP $224.19, part number SBL-TSI-195P-PKG

Specifications

What's Included

• 1x SPAL SBL-TSI-195P-PKG variable temperature control sensor (175 to 195 degree)
• Wiring harness adapter for SPAL brushless fan controller connection

About SPAL

SPAL Automotive is an Italian-engineered, globally recognized manufacturer of electric cooling fans, blower motors, and fan control systems. Founded in 1959, SPAL supplies OEM-level components to automotive manufacturers worldwide and is widely considered the benchmark for high-efficiency brushless cooling fan technology in both OEM and aftermarket applications. Their brushless fan systems are used across racing, motorsport, and performance street builds where consistent, reliable thermal management is non-negotiable.

Frequently Asked Questions

What SPAL brushless fan models is the SPLSBL-TSI-195P-PKG compatible with?

The SPLSBL-TSI-195P-PKG is designed for use with SPAL's Plus Series and other brushless cooling fans that use the TSI temperature sensor harness input. Verify your specific fan model's harness requirements before ordering to confirm sensor connector compatibility.

What does the 175 to 195 degree activation range mean?

The sensor triggers fan activation within the 175 to 195 degree Fahrenheit window. This lower range is ideal for builds using a 160 to 180 degree thermostat, track day vehicles requiring aggressive pre-cooling, or any application where earlier fan engagement is preferred to maintain lower coolant temperatures.

How does the SPLSBL-TSI-195P-PKG differ from the 215P-PKG version?

The primary difference is the temperature activation range. The SPLSBL-TSI-195P-PKG activates between 175 and 195 degrees Fahrenheit, making it appropriate for lower-temperature applications, while the 215P-PKG targets a higher 190 to 215 degree window more common in stock cooling setups. Choose based on your thermostat rating and preferred coolant operating temperature.

What thread size does the SPLSBL-TSI-195P-PKG use?

The sensor body is threaded to 3/8 in. NPT, a widely available standard found on most aftermarket radiators, thermostat housings, and intake manifold water ports. NPT adapter bushings are available if your installation point uses a different thread pitch.

Do I need a relay or external switch to use this sensor?

No relay is required. The SPAL brushless fan controller manages motor switching internally. The SPLSBL-TSI-195P-PKG sends a temperature-triggered signal directly to the controller, which handles all power switching. This simplifies installation and reduces wiring complexity versus traditional relay-based setups.

Is this sensor suitable for a twin-fan brushless setup?

Yes, provided each fan's controller is wired to receive the temperature signal. In a dual-fan setup, you may need to split the sensor signal or use a separate sensor for each controller depending on your specific SPAL wiring harness configuration. Refer to your SPAL brushless fan wiring guide for multi-fan applications.

Can the SPLSBL-TSI-195P-PKG be used on a forced-induction build?

Yes. The 175 to 195 degree activation range makes the SPLSBL-TSI-195P-PKG a good fit for turbocharged or supercharged applications that benefit from earlier fan engagement to offset the additional heat load from intercoolers and compressed charge temperatures. Ensure the sensor is installed in the primary coolant circuit for accurate temperature readings.

Does this sensor include installation hardware?

The package includes the sensor and harness adapter. Thread sealant or PTFE tape and an NPT plug wrench are recommended for installation but are not included. If your radiator or housing uses a port plug, you will need to remove it before installing the sensor.

Installation Instructions

1. Locate a 3/8 in. NPT threaded port on the radiator side tank, thermostat housing, or coolant outlet passage.
2. Remove any existing plug or sensor from the port and clean the threads.
3. Apply thread sealant or PTFE tape to the SPLSBL-TSI-195P-PKG sensor threads.
4. Thread the sensor into the port by hand, then torque carefully, avoiding overtightening in aluminum housings.
5. Connect the sensor pigtail to the SPAL brushless fan controller harness input.
6. Start the vehicle and allow coolant to reach the 175 to 195 degree activation window, confirming fan engagement with a scan tool or temperature gauge.
7. Inspect the sensor port for coolant leaks at full operating temperature before returning the vehicle to service.

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.