Part# 05-02038
MFR Model# S1051-5
Part NumberHoseFitting


For use with Aeroquip 491 fittings. These tools are recommended to avoid damage to the sealing surface and to properly support the inner tube. Note: These are Aeroquip Factory Mandrels, which are highly recommended for best results.
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On time and as advertised

Airframe I
February 4, 2021

The Aeroequip 303 hose and 491 fittings are assembled using this tool. It is absolutely necessary. I made hose assemblies today for the first time. Im pleasantly surprised how well and easy this was to do. Expensive...yes. but necessary.

Kenneth E
June 19, 2020

Good tool, well built and works as it should, just very overpriced. Lost a star for high price.

November 4, 2015

A very well made tool at a hideous price.

Robert B
May 26, 2020


Please note,'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. 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: Is this mandrel good to build up hoses of all types? 303, 666 etc?

This fitting is made to be used specifically with the 303 series hose. The 666 series hose will take either the F66000 or AE21502 series fittings.

Q: Does this work with the 471 fittings also?

Yes these can be used with the 471 fittings as well.