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Tempest AA474 Oil Filter Wrench Extension

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Part# 10-03929
MFR Model# AA474


Some aircraft applications create an environment that does not allow adequate clearance to get a torque wrench or even an open-end wrench around the install nut on oil filters. Even though Tempest has recently introduced the Dash II filter, which is the shortest oil filter on the market, the clearance is still not enough on some applications, such as Beech Barons and Bonanzas. To eliminate this problem Tempest producs the AA474 oil filter wrench extension.

Assembled in the USA
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WARNING: Cancer and Reproductive Harm -


  • Chrome-plated steel provides a high quality tool.
  • Easy to use torque conversation label on back of tool.
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great for getting in to the tight spot and getting removal leverage

Tscm G Verified Purchase


November 9, 2022

While it does allow for easy removal of oil filters in a D55 Baron, using it as a torque adapter is difficult, and cumbersome. I was eventully able to torque, but it was a PITA. It could be a little bit thinner to get between the Oil filter and the Vacuum pump but it does work without modification.

Westwood A
September 27, 2018


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: Will this wrench fit on the Tempest ROTAX oil filters?

Per the supplier: The Rotax filter doesn't have a nut, just safety wire provisions.

Q: Will this Tempest AA474 wrench fit the standard Champion filter?

Yes, that will work with both Champion and Tempest filters.

Q: Will this work on a O-320 Tempest AA48110-2 filter and is it made in the USA?

Yes and yes.

Q: Will this work on a Tempest AA48109 filter?

Yes this will work with all Tempest filters.

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