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 33599 Heavy-Duty Thermostat Features:

• 190 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:

• 1998-2008 American LaFrance ALF Eagle 12.7L L6
• 1994 Flxible Transit Bus Metro 35 8.5L L4
• 1990-1997 Ford LTA9000 11.1L L6, 12.7L L6
• 1991-1997 Ford LA9000 11.1L L6, 12.7L L6
• 1991-1997 Ford LS9000 11.1L L6
• 1992-1996 Ford LLA9000 11.1L L6
• 1992-1997 Ford LT9000 11.1L L6, 12.7L L6
• 1992-1997 Ford LTLA9000 11.1L L6, 12.7L L6
• 1992-1996 Ford LTLS9000 11.1L L6, 12.7L L6
• 1992-1997 Ford LTS9000 11.1L L6, 12.7L L6
• 1993-1997 Ford L9000 11.1L L6, 12.7L L6
• 1994 Ford LLS9000 11.1L L6
• 1996-1998 Ford A9513 11.1L L6, 12.7L L6
• 1996-1998 Ford AT9513 11.1L L6, 12.7L L6
• 1996-1998 Ford LT9513 11.1L L6, 12.7L L6
• 1997 Ford A9522 12.7L L6
• 1997-1998 Ford AT9522 11.1L L6, 12.7L L6
• 1997 Ford L9513 11.1L L6, 12.7L L6
• 1997-1998 Ford LT9522 12.7L L6
• 1998 Ford LT9501 11.1L L6, 12.7L L6
• 1998 Ford LT9511 11.1L L6, 12.7L L6
• 1987-2000 Freightliner FLC112 11.1L L6, 12.7L L6
• 1987-1988 Freightliner FLC120 11.1L L6
• 1987-1988 Freightliner FLT086 11.1L L6
• 1988-2008 Freightliner FLD120 8.5L L4, 11.1L L6, 12.0L, 12.7L L6, 14.0L L6
• 1989-1994 Freightliner FLA086 11.1L L6, 12.7L L6
• 1990-1998 Freightliner FLL086 11.1L L6, 12.7L L6
• 1994-2003 Freightliner FL106 8.5L L4
• 1994-1999 Freightliner FLB 11.1L L6, 12.7L L6
• 1994-2002 Freightliner FLD112 8.5L L4, 12.0L, 12.7L L6
• 1996-2011 Freightliner Century Class 11.1L L6, 12.0L, 12.7L L6, 14.0L L6
• 1997-1998 Freightliner FL112 8.5L L4, 12.0L
• 1999-2011 Freightliner Argosy 11.1L L6, 12.7L L6, 14.0L L6
• 2000-2011 Freightliner Columbia 11.1L L6, 12.7L L6, 14.0L L6
• 2001-2011 Freightliner Classic 11.1L L6, 12.7L L6, 14.0L L6
• 2001-2009 Freightliner Classic XL 11.1L L6, 12.7L L6, 14.0L L6
• 2001-2010 Freightliner FLD132 12.7L L6, 14.0L L6
• 2002-2009 Freightliner Coronado 12.7L L6, 14.0L L6
• 2005-2010 Freightliner FLD120SD 12.7L L6, 14.0L L6
• 2008-2014 Freightliner Cascadia 14.0L L6
• 1987-1988 GMC General 11.1L L6, 12.7L L6
• 1988 GMC Brigadier 11.1L L6
• 2003-2005 Gillig Low Floor 8.5L L4
• 1990-1998 International 8100 8.5L L4, 11.1L L6, 12.7L L6
• 1990-1998 International 8200 8.5L L4, 11.1L L6, 12.7L L6
• 1990-1994 International 8300 11.1L L6, 12.7L L6
• 1992-1998 International 9300 11.1L L6, 12.7L L6
• 1992-2000 International 9400 11.1L L6, 12.7L L6
• 1992-1996 International 9600 11.1L L6, 12.7L L6
• 1992-1996 International 9700 11.1L L6, 12.7L L6
• 1994-2000 International 9200 SBA 11.1L L6, 12.7L L6
• 1996-1999 International 9800 SBA 11.1L L6, 12.7L L6
• 1998-1999 International 9100 SBA 11.1L L6
• 1999 International 9900 12.7L L6
• 1999 International 9900 SFA 11.1L L6
• 2000-2003 International 9100i SBA 11.1L L6, 12.7L L6
• 2000-2003 International 9200i SBA 11.1L L6, 12.7L L6
• 2000-2003 International 9400i SBA 11.1L L6, 12.7L L6
• 2000-2003 International 9900i 12.7L L6
• 2000-2003 International 9900i SFA 11.1L L6, 12.7L L6
• 2000-2002 International 9900ix 12.7L L6
• 2001-2002 International 9900ix SFA 12.7L L6
• 1987-2003 Kenworth T600A 12.7L L6
• 1988-1996 Kenworth K100E 12.7L L6
• 1988-2003 Kenworth T800 8.5L L4, 12.7L L6
• 1988-2003 Kenworth W900 12.7L L6
• 1989-1994 Kenworth C500 12.7L L6
• 1995-1996 Kenworth T450 8.5L L4
• 1997-2003 Kenworth T2000 12.7L L6
• 1992-1997 Mack CL 12.7L L6
• 1994-2000 Motor Coach Industries 102D3 11.1L L6, 12.7L L6
• 1995-2001 Motor Coach Industries 102DL3 11.1L L6, 12.7L L6
• 1998-2000 Motor Coach Industries 102EL3 11.1L L6, 12.7L L6
• 2002-2003 Motor Coach Industries J4500 12.7L L6
• 2007 Motor Coach Industries D4505 12.7L L6
• 2002-2005 Neoplan Advanced DSN 8.5L L4, 12.7L L6
• 1994 New Flyer D40 8.5L L4
• 1994-1999 New Flyer D40LF 8.5L L4
• 1995 New Flyer D60 8.5L L4
• 2001 New Flyer C40LF 8.5L L4
• 1997-2000 Orion Bus Orion V 8.5L L4
• 2000 Orion Bus Orion VI 8.5L L4
• 1999 Oshkosh Motor Truck Co. H 11.1L L6, 12.7L L6
• 1999 Oshkosh Motor Truck Co. P 12.7L L6
• 1988-2004 Peterbilt 362 12.7L L6
• 1988-2001 Peterbilt 377 12.7L L6
• 1988-2004 Peterbilt 378 12.7L L6
• 1988-2003 Peterbilt 379 12.7L L6
• 1989-2003 Peterbilt 357 12.7L L6
• 1989-1993 Peterbilt 372 12.7L L6
• 2001-2003 Peterbilt 385 12.7L L6
• 2006-2011 Pierce Mfg. Inc. Arrow XT 12.7L L6, 14.0L L6
• 2006-2008 Pierce Mfg. Inc. Lance 12.7L L6, 14.0L L6
• 2007-2008 Pierce Mfg. Inc. Dash 12.7L L6, 14.0L L6
• 2007-2009 Pierce Mfg. Inc. Quantum 12.7L L6, 14.0L L6
• 2008-2009 Pierce Mfg. Inc. Velocity 14.0L L6
• 1999-2007 Sterling Truck A9500 11.1L L6, 12.7L L6, 14.0L L6
• 1999-2000 Sterling Truck A9513 11.1L L6, 12.7L L6
• 1999 Sterling Truck A9522 12.7L L6
• 1999-2007 Sterling Truck AT9500 11.1L L6, 12.7L L6
• 1999-2000 Sterling Truck AT9513 11.1L L6, 12.7L L6
• 1999-2000 Sterling Truck AT9522 11.1L L6, 12.7L L6
• 1999-2007 Sterling Truck L9500 11.1L L6, 12.7L L6
• 1999-2001 Sterling Truck L9511 11.1L L6, 12.0L
• 1999-2000 Sterling Truck L9513 11.1L L6
• 1999-2007 Sterling Truck LT9500 11.1L L6, 12.0L, 12.7L L6, 14.0L L6
• 1999-2001 Sterling Truck LT9501 11.1L L6, 12.0L
• 1999-2001 Sterling Truck LT9511 11.1L L6, 12.0L, 12.7L L6
• 1999-2001 Sterling Truck LT9513 11.1L L6, 12.0L, 12.7L L6
• 1999-2000 Sterling Truck LT9522 12.7L L6
• 2001 Sterling Truck Acterra 7500 12.0L
• 2001 Sterling Truck Acterra 8500 12.0L
• 2001 Sterling Truck L7500 12.0L
• 2001 Sterling Truck L8500 12.0L
• 2001 Sterling Truck LT7500 12.0L
• 2001 Sterling Truck LT8500 12.0L
• 2002-2003 Van Hool C2045 12.7L L6
• 1996-2001 Volvo ACL 11.1L L6, 12.7L L6
• 1996-2001 Volvo WAH 11.1L L6, 12.7L L6
• 1996-1998 Volvo WC 11.1L L6, 12.7L L6
• 1996-2000 Volvo WG 11.1L L6
• 1996 Volvo WH 11.1L L6, 12.7L L6
• 1996-1998 Volvo WI 11.1L L6, 12.7L L6
• 1998-1999 Volvo VN 11.1L L6, 12.7L L6
• 2000-2003 Volvo VNL 11.1L L6, 12.7L L6
• 2000-2003 Volvo VNM 11.1L L6, 12.7L L6
• 1989-2002 Western Star 4900 11.1L L6, 12.7L L6
• 1990-2001 Western Star 5900 11.1L L6, 12.7L L6
• 1991-1996 Western Star 4800 11.1L L6, 12.7L L6
• 1997-2002 Western Star 4900E 11.1L L6, 12.7L L6
• 2002-2012 Western Star 4900EX 12.7L L6, 14.0L L6
• 2002-2014 Western Star 6900XD 12.7L L6, 14.0L L6
• 2010-2011 Western Star 4900FA 12.7L L6, 14.0L L6
• 2010-2018 Western Star 4900SA 14.0L L6
• 1988 White WCA 11.1L L6
• 1988 White WIA 11.1L L6
• 1988-1989 White/GMC J9C0 11.1L L6
• 1988-1995 White/GMC WCA 11.1L L6, 12.7L L6
• 1988-1995 White/GMC WIA 11.1L L6, 12.7L L6
• 1990-1995 White/GMC WAH 11.1L L6
• 1990-1995 White/GMC WG 11.1L L6
• 1990-1995 White/GMC WHL 11.1L L6, 12.7L L6
• 1990-1995 White/GMC WHR 11.1L L6, 12.7L L6
• 1991-1995 White/GMC WHEB 11.1L L6, 12.7L L6
• 1991-1995 White/GMC WHLB 11.1L L6, 12.7L L6
• 1991 White/GMC WHM 12.7L L6