Home 9 Product 9 T270, T300, T370 (Mid-2014 to Newer) Kenworth Heater Box

T270, T300, T370 (Mid-2014 to Newer) Kenworth Heater Box


Stainless steel heater box F31-1220ss-2 fits 2015 and newer T270, T300, T370. Have questions? Call us at (616) 834-1503.

SKU: F31-1220SS-2

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 of CFM over OEM)
  • AC Evaporator
  • Coil heater
  • Thermostat
  • Expansion valve
  • Gasket kit

The F31-1220ss-2 heater box comes assembled including the gasket kit.


Cross references:

F31-1220-12101, F31-1287-12101, F31-1287-12104, and F31-1220-12104

Additional information

Weight 35 lbs
Dimensions 20 × 15 × 20 in

Fits T270, T300, T370 from 2015 to at least 2019

Alternative part numbers





T270, T300, T370


2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022


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