Oil Filter Adapter O-Ring Size(s)...?

Runnin'OnEmpty

New member
Hi all; I'm looking for a set of O-rings for
the filter adapter on my 96 4.0.

RockAuto shows two different sizes; one is
about .8" and the other is about .9" in diameter.

Are both of these sizes required, or is the same
size used for both O-rings?

Thanks,
ROE
 

souske

New member
Chapter BOD
just get the dealer kit

with the amount of hassle its not worth the $10 to guess
 

xcm

New member
**** the dealer kit, only 2 fit, and you waste a day tracking them down/dealing with salesmen.

Goto morris4x4 center's website, they sell a crown kit that has all 3.... AND ALL 3 FIT! Only downside is the shipping is more than the o-rings, but real men have multiple xj's, so just buy 3 or 4 kits.
 

Runnin'OnEmpty

New member
Thanks for the replies. After doing some research,
the Crown kit is #4720363 which is the very same
part number as the dealer kit. I suspect they're
the exact same O-rings.

Felpro sells the large O-ring (FP70301), but I
couldn't see any listing for the smaller ones.

xcm;245847350......but real men have multiple xj's said:
LOL, I have had multiple XJs, just not at the same time...
 

iluv83vettes

New member
Did this today and used the dealer kit. Fit just fine. I think it was like $4.75 with tax. Might be a little different with tax wherever you live. Dealer had two in stock. I bought both. Have one on the shelf as a spare.
 

Dragonslayer

New member
My dealer charged me $8.50 for the OEM O-ring kit back in 2010.

I saw a bunch of them being sold on eBay for ~$5, and so I bought 2 of 'em.
 

centuryhouse

New member
Hi y'all - I just got my first Jeep (2000 Cherokee Sport XJ w 4.0l, automatic) yesterday and will be changing the oil & filter this week. I'm a little confused about the 'oil filter adapter o-rings' talk. I've never had a car that required any kind of adapter for an oil filter.

I hope you don't mind me piggy-backing on the topic for that question, I see you have your resolution and I'd feel bad creating a topic for something so (probably) obvious to a non-newbie.
 

cruiser54

New member
Hi y'all - I just got my first Jeep (2000 Cherokee Sport XJ w 4.0l, automatic) yesterday and will be changing the oil & filter this week. I'm a little confused about the 'oil filter adapter o-rings' talk. I've never had a car that required any kind of adapter for an oil filter.

I hope you don't mind me piggy-backing on the topic for that question, I see you have your resolution and I'd feel bad creating a topic for something so (probably) obvious to a non-newbie.

You only replace the seals if they are leaking, not with each oil change. Use a quality oil filter like Wix or Napa. Stay away from Fram, sTP etc.
 

garr

New member
Hi y'all - I just got my first Jeep (2000 Cherokee Sport XJ w 4.0l, automatic) yesterday and will be changing the oil & filter this week. I'm a little confused about the 'oil filter adapter o-rings' talk. I've never had a car that required any kind of adapter for an oil filter.

I hope you don't mind me piggy-backing on the topic for that question, I see you have your resolution and I'd feel bad creating a topic for something so (probably) obvious to a non-newbie.
The oil filter adapter It is the part mounted to the engine that the oil filter screws onto, most were put on too tight @ the factory eventually causing the seal to leak oil.
Here is a photo of the adapter off the Jeep
 
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