Home 9 Product 9 (Mid-2014 & Newer Day Cabs) Plug & Play Kenworth Heater Box

(Mid-2014 & Newer Day Cabs) Plug & Play Kenworth Heater Box


This stainless steel HVAC assembly OE part# F31-1221-11110 has all the bells and whistles. It fits 2015 and newer W900 and T800 day cabs. This unit is perfect for someone that needs all the accessories. Have questions? Call us at (616) 834-1503.

SKU: F31-1221-10SS-3


  • Evaporator
  • Heater Core
  • Blower Motor
  • Expansion Valve
  • Thermostatic Switch
  • Receiver Drier
  • 2 Hard Steel Lines
  • 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. See our other Kenworth heater box options here.

OEM Cross References:

  • F31-1221-11110
  • F31-1288-11110

Additional information

Weight 52 lbs
Dimensions 25 × 25 × 21 in



T400, T800, W900


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


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