ACS Fuel Cap 10455

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Part# 05-01391
MFR Model# 10455


ACS new style fuel cap 10455.
Made in USA
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


Regarding the other comment about a pressurized fuel tank popping the cap off... If you ha ANY pressure in the fuel tank you have a much bigger problem than a potential fuel cap leak. Even 1/2 psi in a fuel tank could potentially deform or rupture a joint. If you have any pressure in the tank, your vents are clogged.

Neal G
January 22, 2022

Perfect fit and seal without any machining modifications. Easily adjusted to fit the receiver ring by tightening the nut on the underside.

Scott A
September 14, 2020

These fuel caps are not a direct replacement for the earlier ACS design (which were lost inflight due to inadequate rubber seal design). The new 10455 cap outside diameter is too large will require machining to fit the ACS receiver ring. After this modification, they fit nicely.

Mike T
March 13, 2018

The gas cap does not mechanically lock into the ring like the 10600. Its held in place by friction against the o-ring, when you fold over the tab it squishes the o-ring, the amount of squish is adjustable with the center screw. This is significant because if the fuel tank becomes pressurized that pressure could overcome the friction and pop the cap off.

William H
July 16, 2021


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: What are the dimensions of the rubber in this ACS Fuel Cap 10455?

The outside diameter of the rubber gasket in this fuel cap is approx 2-3/4" and the height is approx 1/8".

Q: Will this cap drop right into my existing older receiver ring?

Yes, this is meant as a replacement.

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