With the success of my cup holder spacers for other brands I have had request for trucks also.  this listing is for the spacer only and the picture's of the chrome cup holders is to show what they are based on to help you make sure they will fit your model truck since not all Kenworth and Peterbilt have the same cup holders. this listing is for the spacer only and not the cup holder. I make other cup holder spacers for different models so please look at the other listings to make sure this is the right one for you. 
 
If you look at this one it is more flat on the bottom and sits flush. If your Peterbilt cup holder drops down please look at my other Peterbilt listing because this one will not fit right.
 
inside size 77 mm +/- 1 mm
 
I made a video to help show it in use. just copy and past it. 
https://www.youtube.com/watch?v=pfdJEEZ9mac
 
CLIMATE NOTE: This is printed in PLA plastic which is known to warp in higher temperatures or become brittle when exposed to UV light. If your car is in a hot climate and in the sun, the high temperatures (>125℉) and direct sunlight could warp this adapter or cause it to break. This particularly applies to places like Phoenix, Southern California, etc. where temperatures regularly reach into the 100℉. An average "hot" summer day in Minnesota, or Wisconsin, or New York could also warp these if your car sits in the sun! 
 
This product is 3D printed. Due to the nature of 3D printing, there may be a seam, layer lines, and/or small imperfections.
 
Washing instructions: Hand wash only with cool, soapy water. Rinse and dry.
 
Orders will be shipped to the address you have on file. Please check it prior to submitting an order! Anything returned to me due to an incorrect address may result in additional shipping charges, which will be the responsibility of the buyer and orders will not be refunded.