Push Fuel Cap and Adapter
This Precision CNC Machined Aluminum Adapter can be threaded onto any Boyd 2" NPSM neck to convert the neck to popular OEM style click and Fill Thru Caps. Can also be used on 2" NPT Pipe nipples commonly found on big box store transfer tanks.
This will increase the height of your neck approx 5/8" + the height of your that your are using.
This adapter will work with MANY OEM style caps that use a long course thread and Typical fill thru cap brands like Hagan, Tanks INC and Permacap.