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S & HTS Fan Clutch

Supplier: Norman G. Clark

The hub bearing assembly makes the S & HTS perfect for high run time applications. On the piston friction disc (PFD) of the S & HTS is the System Sentry™.

Price Guide: POA

The System Sentry™ protects the fan drive and the entire cooling system. This patented device reacts to heat build up caused by fan drive slippage or fan obstructions.When it senses excessive heat, the System Sentry™ releases, disengaging the fan drive before extensive damage occurs to the cooling system. Finally, a new longer life air cartridge is included in the high performance S & HTS fan drive.

This cartridge reduces the possibility of air leaks with its long life carbon tip and double o-ring air seal. The technologically advanced bearing assembly design, PFD with System Sentry™ and new cartridge, combine to provide you with a premium on/off fan drive that will perform consistently under extreme conditions.

Benefits of S & HTS Fan Clutch

  • Long service life
  • Ideal for harsh environments
  • Consistent performance
  • Better protection against heat damage

Features of S & HTS Fan Clutch

  • System Sentry
  • Long-life air cartridge
  • Double O-ring air seal


  • Heavy-duty trucks

Related Products

  • Advantage Reman Fan Drives & Genuine Horton Repair Kits
  • HT/S PolarExtreme Reman Fan Drives & HT/S or S Repair Kits
  • WindMaster Fans
  • HG300 Solenoid Valves

Further Information

S & HTS Parts & service manual

Master Horton Fan Clutch Listing

Fan Clutch Selection Criteria Form .pdf