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Boyd 2" NPSM Loose CNC Machined Aluminum Cap

Boyd 2" NPSM Loose CNC Machined Aluminum Cap

Availibilty : Typically In-stock


Regular price $28.35
Regular price Sale price $28.35
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Vent Option

-Material =  CNC Machined 6061 ALUM
- Threads = 2” NPSM  Loose 11.5” TPI
-Vented= Yes/ No  Based on your selection
-Lanyard = Yes, Stainless Steel 8” W Alum Crossbar
-Gasket = FKM VITON
This Cap Will Fit any of our 2" NPSM Necks in aluminum, Steel or Stainless


*** Our Vented cap WILL LEAK. The cap is vented by machining a groove into the threads and below the gasket allowing the gasket to be bypassed. Tanks that are not stationary (Like in the back of a truck) will leak fuel as is sloshes back and forth.   We recommend using a NON Vented cap in all situations and utilize a vent port on the tank itself.

What does NPSM Loose Mean?  NPSM stands for National Pipe Straight Mechanical.  Loose means that we machine these on the higher end of the tolerance to account for Weld distortion to the neck and expansion and contraction throughout the seasons.
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Customer Reviews

Based on 6 reviews
Alex Orozco
Aluminum Components Purchase

Fantastic service and great quality of the components, fast shipping as well, I'm a repeat customer. Keep up the good work!


Dennis Ellington
2 inch Fuel cap.

Excellent quality fuel tank cap. Will definitely buy again for fuel tank builds.

Nathan Harker
Great product!!

I love these caps! Best fuel cap ever!👍🤙