Home > Kenworth Heater Box > T270, T300, T370 (1999 – 2014) KW Heater Box

T270, T300, T370 (1999 – 2014) KW Heater Box


Upgrade your HVAC system with our Standard F31-1037ss-2 stainless steel Kenworth HVAC box. Experience heightened airflow with our corrosion-resistant box, crafted for T270, T300, T370, T440, and T470 Kenworth trucks manufactured to mid-2014 and older.

Use our selection tool for precise fitment. If you have any inquiries, feel free to contact us at (616) 834-1503. Enjoy complimentary UPS ground shipping to the lower 48 states and Canada.

SKU: F31-1037SS-2

Frequently Bought Together F31-1037ss-2

Total: $1,645.00

The problem with the OEM Kenworth heater box assembly is that it is made of steel and easily rusts due to the salty, wet conditions that your rig experiences on a regular basis. What’s the solution? The solution is to use a far superior design made from stainless steel. Our heater boxes will never rust! Get yours today! Call now at (616) 834-1503 or click Add to Cart. We accept all major credit cards.


  • Stainless steel box
  • Upgraded blower motor included (15% increase in CFM over OEM)
  • AC Evaporator
  • Coil heater
  • Thermostat
  • Expansion valve
  • Gasket kit

The F31-1037ss-2 heater box comes assembled including the gasket kit.


Cross references:
F31-1037-1, F31-1064-12101, F31-1291-12101, 1001919205BSM, F31-1107-11111, and F31-1293-11111

Additional information

Weight 35 lbs
Dimensions 20 × 15 × 20 in

Fits T270, T300, T370

Alternative part numbers

F31-1037-1, F31-1064-12101, F31-1291-12101




T270, T300, T370


1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014


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