CHROME DEF CAP COVER FOR NEWER MODELS PETERBILT & KENWORTH #0643-DEF (Check model year)

Inner dimension of the cap is  is roughly 2 7/8”.

The outer dimension is roughly 3 1/8”.

Fits these models

• 2013 newer Kenworth C500
  
• 2018 newer Kenworth T660
• 2021 newer Kenworth T680
• 2015 newer Kenworth T700
• 2021 newer Kenworth T800
• 2013 newer Kenworth W900
• 2013 newer Peterbilt 330
  
• 2013 newer Peterbilt 337
• 2013 newer Peterbilt 365
• 2013 newer Peterbilt 384
• 2016 newer Peterbilt 386
• 2021 newer Peterbilt 579
• 2017 newer Peterbilt 587

If you need the older straight looking style , it is #21265