Fluid Air BOL

The rugged, lightweight and compact BOL Series provides outstanding heat dissipation for extreme heat loads.  Available with AC or hydraulic fan motors, all feature proven brazed aluminum P-BAR™ plate and bar core technology engineered with an aggressive turbulator that produces ultra-high heat transfer.  Available with two bypass relief options — a factory installed pressure bypass (P-BAR core) or an internal temperature controlled bypass (T-BAR™ core).

Type Cooling Medium Application Technology
Oil Cooling Air Industrial / Mobile Air Cooled / Brazed Aluminum



  • Bar and Plate Brazed Aluminum Core
  • Provides the best heat transfer per given envelope size while minimizing pressure drop
  • Air-side fin design minimizes fouling and static pressure ensuring long-term, reliable performance
  • Welded fittings/ports and manifolds ensure structural integrity
  • Standard SAE ports – NPT & BSPP available
  • Customized units are available to meet your OE specific performance requirements
  • T-BAR core optional for high viscosity oils or other highly fouling fluids.


Product Options

  • Low noise
  • T-BAR core
  • Servicable internal pressure bypass
  • Internal temperature controlled bypass


Customer Focused and Driven

  • All catalog product is available with short lead-times
  • Expert application engineers are available to select and size the right product for your application
  • Custom designs are available



  • Maximum Operating Pressure 250 PSI
  • Maximum Operating Temperature 300°F



  • Mounting Feet - Steel
  • Standard Core - Brazed Aluminum Bar and Plate
  • Tanks – 5052 Aluminum
  • Nose Bar & Little Bar – 3003-H Aluminum
  • Air Fin, Plate, Turbulator & End Plate – 3003-O Aluminum
  • Fanguard - Steel
  • Connectors - Aluminum
  • Fan - Aluminum Hub, Plastic Blades
  • Shroud - Steel
  • Motor - TEFC & IEC


Fluid Compatibility

  • Petroleum/mineral oils
  • Oil/water emulsion
  • Water/ethylene glycol