SPAL Variable Temperature Control Sensor (140-165 Degree) for Brushless Fans

Precision Temperature Control That Keeps Your SPAL Brushless Fan Running at the Right Speed

The SPAL SPLSBL-TSI-165P-PKG Variable Temperature Control Sensor is the plug-and-play solution for integrating a temperature-based fan speed control into SPAL Plus Series brushless fan setups. Designed specifically for the second-generation SPAL brushless motor platform, this sensor monitors coolant temperature through a standard 3/8 NPT threaded port and sends a variable PWM signal to the fan controller, ramping the fan from off at 140 degrees Fahrenheit up to full speed at 165 degrees Fahrenheit. The result is a quiet, efficient cooling system that ramps up only when needed rather than running at full blast constantly. The SPLSBL-TSI-165P-PKG includes the wiring harness and connectors needed for a complete installation without sourcing additional components.

Key Features

• Activates fan at 140 degrees Fahrenheit and reaches full speed at 165 degrees Fahrenheit for variable-speed temperature management
• Compatible with SPAL Plus Series brushless fans (second-generation brushless motor platform)
• 3/8 NPT thread pitch for direct installation into radiator, intake manifold, or coolant housing ports
• Variable PWM output gradually ramps fan speed with rising temperature for quiet, efficient operation
• Deutsch DT06-4S connector plug for secure, vibration-resistant electrical connection
• Supports up to 12 fans from a single sensor when combined with SBL-YAZ-PT10 adapters
• 12VDC operating voltage, compatible with standard automotive electrical systems
• PKG kit includes harness and connectors for a complete installation package
• Use only with SPAL Plus Series brushless fans to ensure correct fan speed direction

Specifications

What's Included

• 1x SPAL SBL-TSI-165P variable temperature control sensor
• Wiring harness with Deutsch DT06-4S connector
• Installation hardware and connectors for complete plug-and-play setup

About SPAL

SPAL Automotive is an Italian manufacturer of high-performance cooling fans and accessories used across motorsport, automotive OEM, and aftermarket applications worldwide. SPAL's Plus Series brushless fan platform represents their most advanced consumer cooling technology, featuring variable speed control, reduced power draw, and significantly longer service life compared to traditional brush-type motors. The SBL-TSI-165P-PKG sensor is part of SPAL's dedicated accessory ecosystem designed specifically for the Plus Series brushless fan line.

Frequently Asked Questions

The SPLSBL-TSI-165P-PKG is designed exclusively for SPAL Plus Series brushless fans, which are the second-generation SPAL brushless motor line. Compatible fans include the SPAL 30107059, 30107087, 30107089, 30107090, 30107101, 30107102, 30107103, 30107125, 30107328, and other Plus Series models. It is not compatible with SPAL's original first-generation brushless fans or standard brush-type fans.

The SBL-TS-165P is the standalone sensor only. The SBL-TSI-165P-PKG is the complete package version, which includes the sensor plus the wiring harness and Deutsch connector hardware needed for installation. The PKG version is recommended for most users as it eliminates the need to source compatible harness components separately.

Yes. A single SPLSBL-TSI-165P-PKG sensor can control up to 12 SPAL Plus Series brushless fans simultaneously. Each additional fan requires one SBL-YAZ-PT10 adapter, and all fans must connect to the single sensor through the SBL-TS-HARN wiring harness. Only one sensor is needed regardless of fan count.

If an incorrect or incompatible temperature sensor is connected to a SPAL Plus Series brushless fan, the fan will run inverted, meaning it will run at full speed when cool and slow down or turn off as temperature rises. This is a known compatibility issue with SPAL's second-generation platform. Always confirm your fan generation before selecting a sensor.

The SPLSBL-TSI-165P-PKG activates at 140 degrees Fahrenheit and reaches full speed at 165 degrees Fahrenheit, making it appropriate for standard coolant temperature management on most street-driven vehicles. If your engine runs hotter or your cooling system is calibrated for a higher thermostat setpoint, the SBL-TSI-185P-PKG (165 to 185 degree range) may be more appropriate.

The 3/8 NPT thread is a standard tapered pipe thread used widely in automotive radiators, intake manifolds, and coolant housing ports. Most factory cooling system ports in this size accept the sensor directly. If your vehicle does not have an available 3/8 NPT port, a brass adapter fitting can be added at the radiator or a tee fitting can be installed in the upper or lower radiator hose circuit.

No programming or calibration is required. The SPLSBL-TSI-165P-PKG is a self-contained sensor that generates a variable PWM output based on coolant temperature. It connects directly to the SPAL fan harness and operates automatically within its specified temperature range without any additional configuration.

No. The SPLSBL-TSI-165P-PKG is rated for 12VDC systems only. It is not compatible with 24V electrical systems. For heavy-duty or commercial vehicle applications using 24V systems, contact SPAL directly for compatible sensor options.

Installation Overview

1. Identify a 3/8 NPT coolant port in your radiator, intake manifold, or coolant housing closest to the cooling fan location
2. Drain coolant to below the sensor installation point to prevent spillage
3. Apply thread sealant to the 3/8 NPT threads on the sensor body and thread into the port, tightening firmly
4. Route the sensor wiring harness away from heat sources and moving parts, securing with supplied cable ties or zip ties
5. Connect the Deutsch DT06-4S plug to the matching connector on the SBL-TS-HARN fan harness
6. Refill coolant, start the engine, and monitor fan operation as temperature rises to confirm correct activation at 140 to 165 degrees Fahrenheit
7. Confirm fan ramps to full speed at 165 degrees Fahrenheit and shuts off cleanly as the system cools below 140 degrees Fahrenheit

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.