Fan Hubs & Blades

Swapping a Caterpillar, Cummins, or Detroit engine into your heavy-duty truck often requires a chassis-specific fan hub to properly center the fan blade within the shroud—critical for efficient airflow and cooling. Not all fan hubs are the same, compatibility depends on the exact truck model, required fan mounting height and belt alignment.  Incorrect fan height leads to poor alignment, potentially reduced fan blade size effecting cooling performance. 

Once the correct hub is selected for proper fan centering, belt sets are determined by precise measurements: drive belt type (serpentine vs. dual V), pulley groove count (8/6, 10/8, 12/6, etc.), mounting style (top or side), and overall dimensions to ensure alignment and prevent belt throw or slippage. Kustom Truck Parts stocks fan hubs (Drivemaster and DM Advantage series), replacement fan blades and matching belt sets tailored for these conversions in Kenworth, Peterbilt, Freightliner and Western Star trucks. 

Our key offerings include:

  • Horton Fan Hubs: On/Off and 2-speed configurations, engine-specific
  • Fan Blades: 30" and 32" diameters with various pilot and bolt circle patterns to match your fan clutch and centered hub position.
  • Related Belt Sets: Serpentine or dual V-belt options for exact pulley alignment and belt routing.

These components deliver precise fan positioning, optimal shroud centering, secure belt retention, and reliable cooling—essential for avoiding overheating, belt failures, or downtime in repowers and conversion projects.

Browse below for your engine model, belt/groove type, mounting style, and fan center height match. Pair with our coolant plumbing, CAC tubes, or engine harnesses for full cooling integration. Need help verifying the correct fan mounting height, groove count, or chassis compatibility? Contact our team for expert guidance on your build.
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