Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1

Lightweight Locking Sprl Fuel Cap With Universal Flange

Select Color:
Add to Wishlist


This cap has secure sealing and easy finger tip operation. Manufactured from the highest quality modern engineering plastics with Viton o-ring seals (which can be easily replaced if you should ever need to do so).

The mounting ring is anodized aluminum with the flange recessed to give a perfect flush fit whether it is riveted under a metal skin, as in the RV series, or built into a composite structure. This cap is non vented and recommended to keep the fuel in, the water out and in the locking version, other unwanted items out of your tank.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

Aircraft Application

  • Europa
  • Compair
  • Glasair
  • Lancair
  • Murphy
  • OMF
  • Rocket
  • Velocity
  • Zenith and many more experimental aircraft


  • Size: 65 mm O.D.
  • Wgt: 80 grams
  • Manufactured by SPRL


Good price. Prompt service. Courteous staff.

Ed G
April 3, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the locking fuel cap (Part #05-28663) portion also fit the flange for the non-locking version?

Per the supplier: Yes.

Q: Will this cap work on a boat?

We do not have any experience with this cap in marine applications. It should work fine but we cannot say for sure.

View in Catalog

View Image View in Catalog