Filler Caps
![C/E4381 - 1-3/4" Aluminum Filler Cap w/ Steel Bung C/E4381 - 1-3/4" Aluminum Filler Cap w/ Steel Bung](https://www.chassisengineering.com/wp-content/uploads/2018/06/products-1144.jpg)
These Billet Style cap assemblies can be used as a filler neck on water tanks, oil tanks or rear ends. The cap is precision machined from aircraft aluminum. The cap has a knurled edge for easy removal and includes a rubber o-ring for clean, leak free seal.