[gomowgto]

Does anyone run a power steering system filter, and are they considered necessary??

[64speed]

Yes I have a filter. It came in my hydroboost kit so I used it. It’s just a little inline filter. I think it’s way more important with hydroboost than regular systems.

[rohrt]

I have decided to use one this time. Goes in the 3/8 tube on the return line. Seems like cheap insurance. MasterPro Part # 991-FLT1 from O'Riely Auto.

[78w72]

Yes, I use the one mentioned above, fits inside the return line & filters the fluid, can be pulled & cleaned as its just a plastic type screen. There are other canister types that need to be installed inline but these are stealthy & cant be seen.

GM never used a PS filter in these cars but it cant hurt, I use it on new systems as well as when using used pumps/gears flushing new fluid through.

https://www.oreillyauto.com/detail/c...g+filter&pos=0

[hgerhardt]

Northstar Cadillacs from the 90's had PS filters as factory installed items. They had 3/8" hose nipples like the 60's Pontiac fuel filters and were installed on the return line. I have one on my '66 GTO.

Googling that filter today I'm unable to find the original AC-Delco part number. Maybe someone smarter than me can find it.

[b-man]

I’ve had this one since 1990, it’s made by AC Delco..

I bought it from Lee Power Steering when I was picking up my 12.7:1 box they built off of my 1964 unit.

[hgerhardt]

Originally Posted by b-man

I’ve had this one since 1990, it’s made by AC Delco..

I bought it from Lee Power Steering when I was picking up my 12.7:1 box they built off of my 1964 unit.

That one looks different than the Cadillac Northstar version. Can you deduce the part number of it?

Looking a bit further, I found the Cadillac one: PF2189. I mis-remembered the configuration of it, however. It's got a 3/8" inverted flare or O-ring fitting on one end and 3/8" hose on the other.

https://www.rockauto.com/en/moreinfo...&pt=7296&jsn=3

[1965gp]

I just installed a new steering rack in my mustang and it came with this one which is pretty universal:

https://lmr.com/item/LRS-3602A/musta...lter-3-8-79-10

[TedRamAirII]

Seems like I had a Trans rebuilt a few years ago, the guy put a inline filter with a magnet in the cooler line. he said pull it out the next time I changed the engine oil. https://www.napaonline.com/en/p/ATP18721

[b-man]

Originally Posted by hgerhardt

That one looks different than the Cadillac Northstar version. Can you deduce the part number of it?

Looking a bit further, I found the Cadillac one: PF2189. I mis-remembered the configuration of it, however. It's got a 3/8" inverted flare or O-ring fitting on one end and 3/8" hose on the other.

https://www.rockauto.com/en/moreinfo...&pt=7296&jsn=3

Got some better pictures.

PF-883

Searching for this filter shows that it’s been long discontinued, however there may be a transmission filter that’s equivalent, TFK-85953 from CarQuest. It’s nylon material not a steel can like the AC part unfortunately.

http://weblink.carquest.com/acl/?mfg...rtNumber=85953

[Formulas]

I grabbed a small size spin on remote oil filter housing from a VW engine one time in the bone yard, takes smaller engine oil filters i used it for a time as a power steering filter