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EATON AEROQUIP HOSE 303-4 1/4"

$11.50/Foot
Part# 303-4
MFR Model# 303-4
DescriptionTubing SizeHose IDMax PSIWgt/FtPart No.
Aeroquip 303 Hose1/43/163000.132303-4

Overview

This standard hose is used in medium pressure A/C hydraulic, fuel, oil and coolant systems. An inner tube of seamless synthetic rubber is reinforced with a synthetic-impregnated single-wire braid over a single cotton braid and an outer cover of synthetic-impregnated oil-resistant cotton braid. Operating temperature -65 to 250F. Conforms to MILH-8794 (supersedes MIL-H-5511A). Used with Aeroquip 491 hose fittings. Sold by the foot.
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Reviews

Jeff K Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

August 17, 2022

Great product, requires some muscle to get the hose ends to start. My advice, buy the mandrels for the hose size you are using. Without the mandrel you will most likely create a flapper valve on the inner wall of the hose and cause oil or fuel starvation. Use lots of oil in the hose and on the fittings during assembly. The 303 hose will most likely outlive the installer, its a solid and reliable product.

Phillip C
April 23, 2022

good

Stephen R Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

April 23, 2022

A OK HERE!!!!

Robert F Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

March 30, 2022

Good product

George L Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

March 11, 2022

It is what I expected.

David W Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

January 12, 2022

As Promised

Greg M Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

November 24, 2021

As described

Flying H Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

November 4, 2021

Order these all the time for our A&P school. Always quick shipping and decent prices.

Letourneau U Verified Purchase

EATON AEROQUIP HOSE 303-4 1/4"

August 18, 2021

Good

Bill
May 20, 2021

Q&A

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 this hose have a shelf-life?

Yes, the factory gives an 8 year shelf life on 303 hose.

Q: Can you use regular AN fittings on this Aeroquip 303 hose?

No, Aeroquip 303 hose requires 491 Aeroquip fittings.

Q: If this hose is used for fuel line, and is installed within its shelf life, is its installed service life limited to 8 years before needing replacement?

Eaton recommends you replace the 303 hose after 5 years of service.

Q: Is the Aeroquip 303 hose priced and sold by the foot?

Yes, it is priced and sold by the foot.

Q: Does the Aeroquip 303 hose contain any metal or wire? Is it conductive?

The tech data sheet shows the Aeroquip 303 hose has a carbon steel wire braid reinforcement. It does not give any information regarding how conductive it may be.

Q: Do you still need to use fire sleeve for this Aeroquip 303 hose?

It is up to you if you would like to use a firesleeve on this hose or not. It will all depend on your application if you were to need a firesleeve. If you were to get a fire sleeve for hose 303-4 for example, you will need to get P/N# 05-01843.

Q: Does this hose use the same fittings as the stratoflex 111 hose?

It is recommended to use Stratoflex fittings with Stratoflex hose, and Aeroquip fittings with Aeroquip hose. The Aeroquip 303 and Stratoflex 111 are equivalent to each other, and some have used parts interchangeably, but we have no documentation as to how well they will work.

Q: How long is this Aeroquip 303 hose?

This hose is priced and sold by the foot. When you enter quantity, you are entering the number of feet you would like to order.

Q: What is the OD of 303-3 hose?

0.453 OD.

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