MotoRad® - High-Flow™ Series Thermostat

0 reviews|Item # 5739031246
In Stock
Guaranteed Fit
2006 Workhorse W42
  • 4.5L
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Product Details

Workhorse W42 4.5L 2006, High-Flow™ Series Thermostat by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high quality product used in their vehicle. MotoRad offers the only true good, better, best in the industry with standard flow, High Flow / Performance, and the patented Failsafe thermostats.


Flange Thickness: 0.05"
Gasket or Seal included: No
Installation Tool Included: No
Jiggle Pin Weep Hole: Yes
Sealing Flange Outside Diameter: 2.13"


  • Made of stainless steel
  • Provide increased flow
  • Triple-bridge design

MotoRad High Flow thermostats are made of stainless steel and have enlarged openings to provide increased flow. MotoRad is the only thermostat manufacturer that produces true "High Flow" thermostats for today's higher performance engines. These parts also feature a triple-bridge design that increases strength, stability and reliability. High-flow thermostats also have a bypass valve that allows a small amount of coolant to circulate before fully opening.

A standard thermostat flows about 37 gallons of coolant per minute. With MotoRad’s High-Flow thermostat, that number jumps to 56 gallons per minute. That’s almost a 50 percent increase in coolant flow. This additional flow of coolant is important for today’s high powered engines, high performance vehicles, towing, extreme heat and cold temperatures, extreme terrains and stop-and-go traffic. And what does increase coolant flow mean for your engine? The increased coolant flow will reduce the delay in engine warm-up times, allows trapped air in the cooling system to escape and stabilizes the pressure of the cooling system overall. Only MotoRad offers a true high-flow thermostat with improved performance for the toughest driving conditions.

MotoRad®, established in 1958, is the leader in manufacturing top of the line thermostats, radiator caps and fuel caps offered to the North American automotive aftermarket. The company is also a trusted OE supplier and is a privately-owned subsidiary of Fishman Thermo Technologies. MotoRad proudly makes its sophisticated and advanced line of thermostats which is one of the finest in the automotive industry. MotoRad offers the most comprehensive coverage of thermostats for almost any vehicle and engine on the market. MotoRad is known by millions of customers worldwide as the company that offers everything for your thermostat and closure cap needs.


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MotoRad® - High-Flow™ Series Thermostat
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