Home > Kenworth Heater Box > (Mid-2014 & Newer) Kenworth Heater Box

(Mid-2014 & Newer) Kenworth Heater Box


(3 customer reviews)

Enhance your HVAC system with our Standard F31-1288ss-2 stainless steel Kenworth HVAC box. Enjoy increased airflow with our corrosion-resistant box, designed for W900, T800, T600, T660, and C500 Kenworth trucks manufactured in mid-2014 and newer.

Utilize our selection tool for precise fitment. For any inquiries, don’t hesitate to contact us at (616) 834-1503. Benefit from complimentary UPS ground shipping to the lower 48 states and Canada.

SKU: F31-1288SS-2

Frequently Bought Together

Total: $1,595.00

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 F31-1288ss-2 heater box comes assembled including the gasket kit.


Cross references:

F31-1221-11110, F31-1220-11112, F31-1220-11122, F31-1221-11120, F31-1288-11110

Additional information

Weight 35 lbs
Dimensions 20 × 15 × 20 in

Fits T400, T600, T660, T800, W900

Alternative part numbers





T400, T600, T660, T800, W900


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

3 reviews for (Mid-2014 & Newer) Kenworth Heater Box

  1. TJ Dice

    Just installed mine last week and love it!!

  2. Gary Bragg

    I got mine in a couple weeks ago and it works awesome.

  3. Ronald Firmstone

    Just wanted to let you know we just finished installing heater box. Fantastic fit and workmanship making install a Breeze and nice upgrade on blower.
    Firmstone oil company

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