Power brake filter? Can’t find one

[MadMadi]

I’ve looked literally EVERYWHERE for the power brake filter, out of stock on every web site. Is there something I could use in place of it or get rid of it in general?

 

[Memaloose]

My '75 doesn't have a power brake filter. I have never even heard of them before. It looks like a good idea but if you don't have one from the factory, you don't need one in my opinion. Maybe someone has some experience with them, it would be interesting to learn anout them.

 

[Mr Clean]

I never have seen any benefit to having one. In all my years of dealing with these trucks I have never replaced one if it had it. I have had many trucks that didn't even have one. I have run Hyrdoboost on my last 4 Squarebodies, and have never went back to the Air booster...

 

[Vbb199]

A long time ago, @MisterB Made a post about what it was, and nobody could really come up with anything solid, other than it was clearly a carbon type filter with little black balls in it.


To this day, i wondered and wondered what its for.

I suspect it's likely a moisture filter or a debris filter to supply clean air from your intake to the booster. Possibly to just keep any potential manifold debris out of the booster.


Is it needed? I mean, if my truck has it, I'll leave it, but I'm not going out of my way to replace it.

 

[bucket]

It was an 80's thing. GM didn't even use it on everything, just some vehicle/engine combos. You can ditch it, no worries.

 

[MadMadi]

Thanks for the replies! This is the info I’ve found so far and my truck does have one…
It keeps your diaphragm from being damaged by contaminants which may otherwise (somehow) migrate into the booster. You need to keep the charcoal filter as theskunkworks says. It absorbs fuel vapor from the manifold that can destroy the booster diaphragm.
Does the brake booster need a filter?
Yes, it is required and is actually supposed to be changed out annually (doh!). It keeps your diaphragm from being damaged by contaminants which may otherwise (somehow) migrate into the booster.

Weird how it’s out of stock on every single website and in store

 

[Mr Clean]

Wheeler Fleet solutions...9.44 plus shipping

 

[MadMadi]

@Mr Clean thank you! You’re the man.

 

[Vbb199]

Thanks for the replies! This is the info I’ve found so far and my truck does have one…
It keeps your diaphragm from being damaged by contaminants which may otherwise (somehow) migrate into the booster. You need to keep the charcoal filter as theskunkworks says. It absorbs fuel vapor from the manifold that can destroy the booster diaphragm.
Does the brake booster need a filter?
Yes, it is required and is actually supposed to be changed out annually (doh!). It keeps your diaphragm from being damaged by contaminants which may otherwise (somehow) migrate into the booster.

Weird how it’s out of stock on every single website and in store

Yea, that's what I sortof thought.



Manifold gas vapors that can eat away at the diaphragm of the booster.

Pretty cool, glad someone found it

 

[scrap--metal]

Does the brake booster need a filter?
Yes, it is required and is actually supposed to be changed out annually (doh!).

Annually?!?!

If that recommendation was easily found, no wonder you couldn't find any in stock.

Kind of like Valvoline trying to sell an air filter with every oil change.

 

[Memaloose]

I wonder how the booster on my '75 made all these years without one, it's the original one.

 

[idahovette]

Thinking the same thing @Memaloose . How has my 70 Chevelle's booster survived!!

 

[RecklessWOT]

I would assume it's just moisture control? Brake fluid technically likes to attract moisture. I don't own anything that has one in it and have never had a problem caused by bad fluid.

 

[Wonder Bob]

You can also look up Dorman part number 80195.

 

[Raybo135]

I would assume it's just moisture control? Brake fluid technically likes to attract moisture. I don't own anything that has one in it and have never had a problem caused by bad fluid.

There's no fluid in your booster, so moisture should not be a problem.