Home > Kenworth Heater Box > T270, T300, T370 (Mid-2014 – Newer) Plug & Play Kenworth Heater Box

T270, T300, T370 (Mid-2014 – Newer) Plug & Play Kenworth Heater Box


Upgrade your Kenworth’s HVAC performance with our premium stainless steel HVAC box assembly, seamlessly replacing OEM part numbers F31-1220-12101, F31-1287-12104, and F31-1220-12104. Tailored for medium-duty mid-2014 Kenworth and newer T270, T300, T370, T440, and T470 model trucks.

Utilize our selection tool for an exact fit. Ensure a rust-free future and a hassle-free installation. Experience improved airflow with our advanced unit. Fully assembled and prepared for mounting, it’s the HVAC upgrade your system deserves. For inquiries or to kickstart your upgrade, reach out to us at (616) 834-1503.

SKU: F31-1220-12SS-3


  • Evaporator
  • Heater Core
  • Blower Motor
  • Expansion Valve
  • Thermostatic Switch
  • Electronic Operated Door Actuator
  • Gaskets
  • Fresh air intake and door weldment
  • Stainless fasteners

Our boxes are built with 18 gauge 304 stainless steel. Unlike most aftermarket competitors, we spot weld our boxes for added strength. We offer free shipping in the lower 48 states and Canada.

OEM Cross References:

  • F31-1220-12101
  • F31-1287-12104
  • F31-1220-12104

Additional information

Weight 52 lbs
Dimensions 25 × 25 × 21 in



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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