Heavy-duty trucks, buses and equipment subject the thermostat to constant vibration and long run times. This Gates heavy-duty thermostat is built from heavy-gauge brass and stainless steel with a temperature-sensitive heat motor for consistent valve response.

Gates 33964 Heavy-Duty Thermostat Features:

• 188 Degree F Opening Temperature
• Seal Included
• Heavy-Gauge Brass and Stainless Steel Construction
• Factory Calibrated for Accurate Opening and Closing
• Temperature-Sensitive Heat Motor for Consistent Valve Response
• Sold Individually

Vehicle Applications:

• 1999-2009 Chevrolet W3500 Tiltmaster 4.8L L4, 5.2L L4
• 2000-2010 Chevrolet W4500 Tiltmaster 4.8L L4, 5.2L L4
• 2000-2010 Chevrolet W5500 Tiltmaster 4.8L L4, 5.2L L4
• 2004-2009 Chevrolet W5500HD Tiltmaster 4.8L L4, 5.2L L4
• 1999-2008 GMC W3500 Forward 4.8L L4, 5.2L L4
• 2000-2010 GMC W4500 Forward 4.8L L4, 5.2L L4
• 2000-2010 GMC W5500 Forward 4.8L L4, 5.2L L4
• 2004-2009 GMC W5500HD Forward 4.8L L4, 5.2L L4
• 1999-2009 Isuzu NPR 4.8L L4, 5.2L L4
• 1999-2012 Isuzu NPR-HD 4.8L L4, 5.2L L4
• 1999-2012 Isuzu NQR 4.8L L4, 5.2L L4
• 2005-2012 Isuzu NRR 5.2L L4