Mfr. Part Number: 99A9586 by Horton Inc.® Engine Cooling Fan Clutch Skip to content
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99A9586 | Genuine Horton® DM Engine Cooling Fan Clutch
Horton®

99A9586 | Genuine Horton® DM Engine Cooling Fan Clutch

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  • Product SKU: 99A9586
  • Availability: In Stock
$1,399.00 - $1,399.00
$1,399.00
$1,399.00 - $1,399.00
$1,399.00
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Description: DM Engine Cooling Fan Clutch Configured for 24-inch fan with 26-inch pilot mounting surface
Condition: New 
Brand: Horton Inc.® 
Part Number: 99A9586H0R, 99A9586, 99A9586H0R-412

Fitment Guide:

Truck Engine Approx. application
Kenworth T660 Cummins ISX / ISX15 / X15 2010–2024*
Kenworth T680 Cummins ISX / ISX15 / X15 2010–2024*
Kenworth T700 Cummins ISX / ISX15 / X15 2010–2024*
Kenworth T800 Cummins ISX / ISX15 / X15 2010–2024*
Kenworth T880 Cummins ISX / ISX15 / X15 2010–2024*
Kenworth T800B-123 Cummins ISX / ISX15 / X15 listed application


DM generally refers to Horton's DM Advantage fan clutch family. It is commonly found on heavy-duty trucks and diesel engines.

 
  • Prevent engine overheating by providing strong airflow when temperatures rise.
  • Save fuel because the fan isn't constantly consuming engine power.
  • Maintain engine power by reducing the horsepower required to drive the fan.
  • Reduce noise when maximum cooling isn't needed.
  • Reduce wear on the fan, belts, bearings, and related components.
  • Improve cooling efficiency under heavy loads, during climbing, or in hot weather.


Signs of Faulty:

 
  1. Engine overheating
    • Temperature rises under heavy load, climbing hills, or in hot weather.
    • The fan doesn't speed up when the engine gets hot.
    • This is one of the most important warning signs.
  1. Fan stays engaged all the time
    • Loud fan roaring even when the engine is cold.
    • Fan runs at high speed unnecessarily.
    • Can cause poor fuel economy and reduced engine performance.
  1. Fan won't engage
    • Engine temperature gets high but the fan doesn't turn on properly.
    • You may not hear the normal increase in fan noise when the clutch is commanded on.
  1. Fan remains at low speed
    • Particularly relevant to a 2-speed DM clutch.
    • Fan operates, but doesn't switch to high speed when additional cooling is required.
  1. Air leaking from the clutch
    • You hear a hissing sound around the fan clutch.
    • Air pressure may drop when the clutch is activated.
    • Internal seals can also leak.
  1. Fan engages/disengages incorrectly
    • Fan repeatedly switches on and off.
    • Fan engages at the wrong temperature.
    • Fan doesn't respond properly to the vehicle's cooling demand.
  1. Excessive vibration or wobbling
    • Fan or clutch appears to wobble while running.
    • Could indicate worn bearings, damaged clutch components, or another fan-drive problem.
  1. Poor fuel economy
    • If the clutch is stuck engaged, the engine continually uses power to drive the fan.


Horton Inc.® is a leading manufacturer of engine cooling fan clutches. Founded in 1951, the company has built a reputation as a reliable supplier of quality and durable products for heavy equipment and vehicles. Horton Inc.® invests heavily in research and development to provide innovative solutions for optimal performance of engine cooling systems. Their products are widely used in trucks, buses, construction equipment and other vehicles around the world.

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