Brake Duct Hose Replacement

Lionworks Auto · Jan 13, 2024

rhern213 said: ↑

Awesome fellas, nice to see this stuff's still working!
Click to expand...

Thank you!!

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Lionworks Auto · Jan 13, 2024

scowman said: ↑

Love the shrink ducting.
Click to expand...

[emoji1316][emoji1316][emoji1316]

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play2win · Jan 23, 2024

rhern213 said: ↑

Hi all, this weekend I replaced the brake duct hoses on my 550 and thought it'd be helpful to write up a quick how-to for anyone else interested in doing the job. This should apply to most, if not all Ferrari's of this era.

The job is fairly simple, with some prep-work it can be done in a couple of hours, especially if you use the OEM ducts that are pre-cut to fit. However my intention was to use higher quality aircraft ducts because they're much more durable than OEM, are 1/6 the price, and easy to purchase any time. I could only find 1 OEM duct available at the time that wasn't a special order for $200. Each of the aircraft grade ducts are $30. So this may come in handy for the future if they're NLA.

The main problem with the OEM ducts is they're single layered, the internal metal wire that holds the hose shape together is exposed to the elements and easily gets rusted, plus the single layer is easier to tear over time and use. The aircraft duct is double layered so the metal wire is covered on the outside and inside to prevent rusting, plus the rubber material itself is more durable and will hold up to stiffening and heat much better than the OEM material.

The most time consuming part is actually just cutting the hoses to the proper length and then needing to pull the metal wire lining out from the hose at the edges.

The only parts needed are the hose ducting (2 x 2.5ft.) 3-1/4in. diameter hose, and shrink tubing to fit around the hose ends for an OEM look and fit. The shrink tubes I just picked up at a local hardware shop. This is the hose duct I purchased:

https://www.aircraftspruce.com/catalog/pnpages/05-30513-3.php

The other item you need is a heat gun to properly install the shrink tube around the duct hose.

This is what happened to my OEM hoses:

View attachment 3147251

View attachment 3147255

This is what the OEM hose looks like inside:

View attachment 3147260

This is what the new aircraft hose looks like:

View attachment 3147272

So here are the steps:
1. Each hose needs to be cut to 2.5ft. total length.

View attachment 3147256

2. On each end you then need to strip out about 3-4in. of the metal wire.
(This is to make the ends flexible to fit into the ducts and reshape properly)

View attachment 3147258
View attachment 3147257

3. Cut shrink wrap tube to the same 3-4in width as the ends of the hose

4. Jack up front and remove front wheels

5. Remove front undertray and front wheel well liner.

6. Unscrew metal hose clamps from both ends and pull out old duct hose

View attachment 3147253

The passenger side front duct is difficult to maneuver around because the coolant tank is right underneath.
You can unscrew the bottom coolant tank bracket to loosen it up and make it easier to fit your hands around and work on the duct.

View attachment 3147254

7. Remove plastic air duct attached to the control arm.

View attachment 3147252
Click to expand...

rhern213 said: ↑

Hi all, this weekend I replaced the brake duct hoses on my 550 and thought it'd be helpful to write up a quick how-to for anyone else interested in doing the job. This should apply to most, if not all Ferrari's of this era.

The job is fairly simple, with some prep-work it can be done in a couple of hours, especially if you use the OEM ducts that are pre-cut to fit. However my intention was to use higher quality aircraft ducts because they're much more durable than OEM, are 1/6 the price, and easy to purchase any time. I could only find 1 OEM duct available at the time that wasn't a special order for $200. Each of the aircraft grade ducts are $30. So this may come in handy for the future if they're NLA.

The main problem with the OEM ducts is they're single layered, the internal metal wire that holds the hose shape together is exposed to the elements and easily gets rusted, plus the single layer is easier to tear over time and use. The aircraft duct is double layered so the metal wire is covered on the outside and inside to prevent rusting, plus the rubber material itself is more durable and will hold up to stiffening and heat much better than the OEM material.

The most time consuming part is actually just cutting the hoses to the proper length and then needing to pull the metal wire lining out from the hose at the edges.

The only parts needed are the hose ducting (2 x 2.5ft.) 3-1/4in. diameter hose, and shrink tubing to fit around the hose ends for an OEM look and fit. The shrink tubes I just picked up at a local hardware shop. This is the hose duct I purchased:

https://www.aircraftspruce.com/catalog/pnpages/05-30513-3.php

The other item you need is a heat gun to properly install the shrink tube around the duct hose.

This is what happened to my OEM hoses:

View attachment 3147251

View attachment 3147255

This is what the OEM hose looks like inside:

View attachment 3147260

This is what the new aircraft hose looks like:

View attachment 3147272

So here are the steps:
1. Each hose needs to be cut to 2.5ft. total length.

View attachment 3147256

2. On each end you then need to strip out about 3-4in. of the metal wire.
(This is to make the ends flexible to fit into the ducts and reshape properly)

View attachment 3147258
View attachment 3147257

3. Cut shrink wrap tube to the same 3-4in width as the ends of the hose

4. Jack up front and remove front wheels

5. Remove front undertray and front wheel well liner.

6. Unscrew metal hose clamps from both ends and pull out old duct hose

View attachment 3147253

The passenger side front duct is difficult to maneuver around because the coolant tank is right underneath.
You can unscrew the bottom coolant tank bracket to loosen it up and make it easier to fit your hands around and work on the duct.

View attachment 3147254

7. Remove plastic air duct attached to the control arm.

View attachment 3147252
Click to expand...

play2win · Jan 23, 2024

rhern213 said: ↑

Hi all, this weekend I replaced the brake duct hoses on my 550 and thought it'd be helpful to write up a quick how-to for anyone else interested in doing the job. This should apply to most, if not all Ferrari's of this era.

The job is fairly simple, with some prep-work it can be done in a couple of hours, especially if you use the OEM ducts that are pre-cut to fit. However my intention was to use higher quality aircraft ducts because they're much more durable than OEM, are 1/6 the price, and easy to purchase any time. I could only find 1 OEM duct available at the time that wasn't a special order for $200. Each of the aircraft grade ducts are $30. So this may come in handy for the future if they're NLA.

The main problem with the OEM ducts is they're single layered, the internal metal wire that holds the hose shape together is exposed to the elements and easily gets rusted, plus the single layer is easier to tear over time and use. The aircraft duct is double layered so the metal wire is covered on the outside and inside to prevent rusting, plus the rubber material itself is more durable and will hold up to stiffening and heat much better than the OEM material.

The most time consuming part is actually just cutting the hoses to the proper length and then needing to pull the metal wire lining out from the hose at the edges.

The only parts needed are the hose ducting (2 x 2.5ft.) 3-1/4in. diameter hose, and shrink tubing to fit around the hose ends for an OEM look and fit. The shrink tubes I just picked up at a local hardware shop. This is the hose duct I purchased:

https://www.aircraftspruce.com/catalog/pnpages/05-30513-3.php

The other item you need is a heat gun to properly install the shrink tube around the duct hose.

This is what happened to my OEM hoses:

View attachment 3147251

View attachment 3147255

This is what the OEM hose looks like inside:

View attachment 3147260

This is what the new aircraft hose looks like:

View attachment 3147272

So here are the steps:
1. Each hose needs to be cut to 2.5ft. total length.

View attachment 3147256

2. On each end you then need to strip out about 3-4in. of the metal wire.
(This is to make the ends flexible to fit into the ducts and reshape properly)

View attachment 3147258
View attachment 3147257

3. Cut shrink wrap tube to the same 3-4in width as the ends of the hose

4. Jack up front and remove front wheels

5. Remove front undertray and front wheel well liner.

6. Unscrew metal hose clamps from both ends and pull out old duct hose

View attachment 3147253

The passenger side front duct is difficult to maneuver around because the coolant tank is right underneath.
You can unscrew the bottom coolant tank bracket to loosen it up and make it easier to fit your hands around and work on the duct.

View attachment 3147254

7. Remove plastic air duct attached to the control arm.

View attachment 3147252
Click to expand...

How do I get "permission" to view the pictures? I am already a silver subscriber

Aerosurfer · Jan 23, 2024

That should be it... pictures with a registration. Maybe log out and back in or refresh first. Check the settings in your device or try a different browser

play2win · Jan 24, 2024

Thank you Aerosurfer for getting back to me, tried different server, computers, networks, etc…. Been a member for over a decade, nothing. Can an administrator look into this somehow?

Ferrarienthusiast71 · Dec 26, 2024

What’s the link for the 5 foot tubing that 4inch diameter?

Auraraptor · Dec 26, 2024

5 ft of CEET-13 DUCTING (3 1/4" ID): https://www.aircraftspruce.com/catalog/pnpages/05-30513-3.php

This is what I used.

Ferrarienthusiast71 · Mar 21, 2025

rhern213 said: ↑

Hi all, this weekend I replaced the brake duct hoses on my 550 and thought it'd be helpful to write up a quick how-to for anyone else interested in doing the job. This should apply to most, if not all Ferrari's of this era.

The job is fairly simple, with some prep-work it can be done in a couple of hours, especially if you use the OEM ducts that are pre-cut to fit. However my intention was to use higher quality aircraft ducts because they're much more durable than OEM, are 1/6 the price, and easy to purchase any time. I could only find 1 OEM duct available at the time that wasn't a special order for $200. Each of the aircraft grade ducts are $30. So this may come in handy for the future if they're NLA.

The main problem with the OEM ducts is they're single layered, the internal metal wire that holds the hose shape together is exposed to the elements and easily gets rusted, plus the single layer is easier to tear over time and use. The aircraft duct is double layered so the metal wire is covered on the outside and inside to prevent rusting, plus the rubber material itself is more durable and will hold up to stiffening and heat much better than the OEM material.

The most time consuming part is actually just cutting the hoses to the proper length and then needing to pull the metal wire lining out from the hose at the edges.

The only parts needed are the hose ducting (2 x 2.5ft.) 3-1/4in. diameter hose, and shrink tubing to fit around the hose ends for an OEM look and fit. The shrink tubes I just picked up at a local hardware shop. This is the hose duct I purchased:

https://www.aircraftspruce.com/catalog/pnpages/05-30513-3.php

The other item you need is a heat gun to properly install the shrink tube around the duct hose.

This is what happened to my OEM hoses:

View attachment 3147251

View attachment 3147255

This is what the OEM hose looks like inside:

View attachment 3147260

This is what the new aircraft hose looks like:

View attachment 3147272

So here are the steps:
1. Each hose needs to be cut to 2.5ft. total length.

View attachment 3147256

2. On each end you then need to strip out about 3-4in. of the metal wire.
(This is to make the ends flexible to fit into the ducts and reshape properly)

View attachment 3147258
View attachment 3147257

3. Cut shrink wrap tube to the same 3-4in width as the ends of the hose

4. Jack up front and remove front wheels

5. Remove front undertray and front wheel well liner.

6. Unscrew metal hose clamps from both ends and pull out old duct hose

View attachment 3147253

The passenger side front duct is difficult to maneuver around because the coolant tank is right underneath.
You can unscrew the bottom coolant tank bracket to loosen it up and make it easier to fit your hands around and work on the duct.

View attachment 3147254

7. Remove plastic air duct attached to the control arm.

View attachment 3147252
Click to expand...

What size Norma clamp is needed?

rhern213 · Mar 24, 2025

Ferrarienthusiast71 said: ↑

What size Norma clamp is needed?
Click to expand...

Not sure I reused the original clamps. You can probably just find a size that's about 1/2" larger than the ducts.

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Brake Duct Hose Replacement

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Aerosurfer Formula 3
Silver Subscribed

Ferrarienthusiast71 Formula Junior
Rossa Subscribed Silver Subscribed

Auraraptor F1 World Champ
Lifetime Rossa Owner

Ferrarienthusiast71 Formula Junior
Rossa Subscribed Silver Subscribed