Cessna Fuel Cap Gasket - B100142-1

Part# 06-00987
MFR Model# B100142-1


We stock a large inventory of Cessna replacement parts. Some of the most commonly required parts are listed on this page. If you require Cessna parts not listed here, please provide us with the Cessna part numbers and we will provide you with a prompt quotation. All of the parts listed here are authentic Cessna factory parts and all carry our low price guarantee.

Please verify that the parts are correct for your Cessna model/year by referring to the applicable Cessna parts manual prior to ordering.


Flying M Verified Purchase


October 14, 2021

fits great and great seal

David W
March 20, 2016

Correct fit, easy install. Fixed leaky in-flight fuel filler on my 172. Replaced the old ones in my 150, too, but they still leak. Probably the cap itself and not the gasket.

Nick S
August 24, 2015


Please note, Aircraft Spruce Canada'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 Canada 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 this Cessna Fuel Cap Gasket - B100142-1?

The approximate dimensions are: 2-3/16" OD x 1-1/2" ID x 1/8" thickness.

Q: Does the gasket B100142-1 fit cap C156003-0101?

Per the supplier: Yes, it will fit.

Q: Correction to the above: These gaskets are more like 3/32 thick than 1/8 the RG225 is 1/8 as advertised.

Thank you for providing this follow up. We will post it for other customer reference.

Q: Is this the replacement part number for Cessna P/N: 0311360-5?

Yes, 0311360-5 cross references to this part number.

Q: Is this fuel cap gasket compatible with non-Ethanol MOGAS?

These do not have mogas approvals.

Q: Does this gasket cross to Cessna P/N 0311360-4?

This gasket can be used with that fuel cap.

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