2.9 and 4.0 OHV oil filter adapter seal part #'s

[Shran]

I had a heck of a time finding the right O rings for these so hopefully someone will find this information useful - FYI the adapter from the 4.0 will apparently bolt onto a 2.9 and vise versa, as per Ford anyway. You may be able to get away with reusing the green washer and big washer on either application - the little black one in the middle gets absolutely cooked and comes out broken every time. I think that's where leaks develop here.

The 2.9 info may apply to 2.8 adapters as well, I no longer have one to confirm but it appears to be the same or similar.

FYI you CAN replace these with the exhaust in place, it is not too bad on a 2.9 truck, 4.0 is a lot less fun. A stubby 3/4 or 19mm wrench is what you will need.

2.9 adapter uses one little O ring, one big O ring, and a copper washer.
Small O ring - Felpro 413 or equivalent
Big O ring - Mahle B32794 or Victor Reinz 711351400 - there are two listed for the 2.9, a thick one and a thin one. The thin one was what I needed, 2.45 IN I.D.; with .103 IN Width. Also available at hydraulic shops
Copper washer - NLA - just reuse what you have
*********** update on the copper washer from the 2.8 forum, another user found a part that will work:

For anyone that may need to know, I damaged my thrust washer when reinstalling my oil filter adapter on my 83 2.8 ranger. The washer can be replaced with Dorman- HD solutions copper drain plug gasket #095-5002CD. I found a 3 pack on Amazon for $14 but looking the part up on the Dorman site it seems to be used pretty commonly on big rig diesel engine oil pan plugs so I would imagine you could find them at a truck shop or diesel parts supply.

4.0 adapter uses three O rings - two small ones and a big one
Small black O ring - Felpro 413 or equivalent
Green O ring - Ford only part - E9TZ-6749-A - nothing else will fit correctly that I have found, it is a metric half size supposedly.
Big O ring - Felpro 72884 or equivalent - the "thick" one that's listed for the 2.9 adapter fits here - 0.141 (in) Width; 2.482 (in) Inside Diameter

2.9 adapter & all its pieces:

4.0 adapter:

 

[RobbieD]

Great information; thank you for posting.

Your info looks to be perfect, especially with including the dimensions. GREAT pictures, too.

The oil filter adapter is a common leak point on Colognes often overlooked, and it's not too bad of a job to replace these seals. If you have the transmission out anyway, that's a great time to do it with the better access.


In case it's helpful, here is what I have on these which may give some cross referencing for other manufacturer's part numbers (and in my case I also have a 2.8 to maintain).

I can't garrauntee the accuracy of my notes, and the info is several years old so the prices are at that time, and not today's pricing. Looks like I pulled all of these part number off of RockAuto ("+ S" is "plus shipping"; "OOS" is "out of stock"). I've bought these from Rock, and also had my local mom-and-pop parts store order them. In fact, the mom-and-pop store found the green o-ring for me, delivered from the local Ford dealership.

 

[alwaysFlOoReD]

A note on copper washers. Heat them up red hot and drop into water. This will anneal the copper so its soft again. Over time the copper washer gets work hardened and may not seal properly if not annealed.
I learned this when I was doing a pre-apprentice course in diesel mechanics many years ago.

 

[Shran]

That's interesting, and good to know.

I'm not sure I would do that with this one unless I had a spare - I used a 3M finger disc to clean up mine and it appeared to be some other material that was copper plated. There were a couple small spots where the inner material was showing through. It's not leaking in any case.

 

[A4LD_Nghtme]

So how do I choose the right gasket for a 1990 Bii with a 2.9? Is the correct gasket 2.45 IN I.D.; with .103 IN Width or the thicker 2.482 (in) Inside Diameter; 0.141 (in) Width? All part store say the latter but I need to be sure

 

[Shran]

So how do I choose the right gasket for a 1990 Bii with a 2.9? Is the correct gasket 2.45 IN I.D.; with .103 IN Width or the thicker 2.482 (in) Inside Diameter; 0.141 (in) Width? All part store say the latter but I need to be sure

I would say it's impossible to know for sure without taking it apart. My GUESS is that it's the .103 width, that's what my '87 has, but who knows. If you have the later style adapter then it will be the thicker one. Safe bet - just buy both and return the one you don't need.

FYI both of those are standard size O rings that a good hydraulic shop should have on hand and at a MUCH lower price than whatever the parts stores will rip you off for in a Felpro package.

 

[Hale Ranger]

I have an 84 2.8 with the adapter leak. Would the 2.9 use just the two o-rings?

 

[Shran]

I have an 84 2.8 with the adapter leak. Would the 2.9 use just the two o-rings?

I suspect that you'll have the 2.9 style adapter with two o-rings and the copper washer. Post up some pics if you take it apart, curious if that is the case.

 

[Slyronious]

Update on the 2.8 adapter. Currently rebuilding the Ranger and wanted to add some info on the specs for the 2.8. This is the factory adapter for an '84 Ranger. Part number 83TM6884AA. 61096

 

[Slyronious]

Since rubber o-rings tend to harden and shrink over time, there is a Viton equivalent replacement for the 0.103" width since these adapters leak over time.This would be a replacement for the MAHLE B32794, which is rubber.

Its part number ZUSAV2.5X62 which is 62mm ID, 2.5mm cross section.

Whoops, we couldn't find that.

 

[pcsstoll]

I had a heck of a time finding the right O rings for these so hopefully someone will find this information useful - FYI the adapter from the 4.0 will apparently bolt onto a 2.9 and vise versa, as per Ford anyway. You may be able to get away with reusing the green washer and big washer on either application - the little black one in the middle gets absolutely cooked and comes out broken every time. I think that's where leaks develop here.

The 2.9 info may apply to 2.8 adapters as well, I no longer have one to confirm but it appears to be the same or similar.

FYI you CAN replace these with the exhaust in place, it is not too bad on a 2.9 truck, 4.0 is a lot less fun. A stubby 3/4 or 19mm wrench is what you will need.

2.9 adapter uses one little O ring, one big O ring, and a copper washer.
Small O ring - Felpro 413 or equivalent
Big O ring - Mahle B32794 or Victor Reinz 711351400 - there are two listed for the 2.9, a thick one and a thin one. The thin one was what I needed, 2.45 IN I.D.; with .103 IN Width. Also available at hydraulic shops
Copper washer - NLA - just reuse what you have
*********** update on the copper washer from the 2.8 forum, another user found a part that will work:


4.0 adapter uses three O rings - two small ones and a big one
Small black O ring - Felpro 413 or equivalent
Green O ring - Ford only part - E9TZ-6749-A - nothing else will fit correctly that I have found, it is a metric half size supposedly.
Big O ring - Felpro 72884 or equivalent - the "thick" one that's listed for the 2.9 adapter fits here - 0.141 (in) Width; 2.482 (in) Inside Diameter

2.9 adapter & all its pieces:
View attachment 107212

4.0 adapter:
View attachment 107213
View attachment 107214

Thanks so much for this info and part numbers, I've been trying to find this info.

I'm putting my engine back together after breaking it down and replacing all the gaskets. The O-rings were rock hard! I thought they were a metal ring until I pried it out. This seal was leaking terribly for me.

Reassembling the 2.9L now to get it back in and running hopefully soon.

Thanks!

 

[Gav63]

Hi everyone, newcomer here.

I have gone down this path as I am helping my girlfriend fix up her 86 Bii. Unfortunately as I learned a hard lesson about non reversible ratcheting wrenches, I am now trying to find a replacement bolt for my adapter, I had to damage original bolt to get it out. I purchased part number 5L2Z6894AA but that appears to be a different and potentially for 4.0l. I can’t seem to find correct part anywhere, I have talked to ford part counter too. Attached is the old (mangled) bolt from 2.9 and the part I bought, you can see the new one has more of a shoulder that prevents it from mating up with where the copper washer would go. Any thoughts or advice truly appreciated. My work schedule makes it hard to get to junkyard but that will be my last option if nothing else works out.

 

[Slyronious]

Finding the bolt or adapter is nearly impossible. If you can find the adapter and get the bolt off it, it's part number 83TM6884AA. They show up on eBay occasionally. Your best bet would either to find a junk 2.9 and pull the bolt off it or to switch to a universal adapter or an oil filter relocation kit. You can search car-part.com for searching junk yards. Maybe someone has a junk 2.9 that they can pull the bolt/adapter off for you and ship it to you.
Or you may be able to use the M-6880-A50 Ford Racing adapter, but finding one under $100 is going to be difficult. Unfortunately all I can see is either sourcing a junk 2.9 or just relocating the filter with a universal kit.

I can't verify if this will work, but it's possible you might be able to use a Oil Filter Adapter SBF ALL92003 which is an $8 part. It get's rid of the 90 degree adapter and let's the filter screw in horizontally. It won't work on my 4x4 Ranger because of clearance problems with the frame, but it might work on a 2x4. I believe that Aerostars with the 2.9 simply screwed the filter into the side of the engine. So maybe you could source some parts from one of those.

 

[JJMaine]

Damn, that's what all of those o rings were for in my Fel Pro kit. I had wanted to reseal mine while I had the engine out but couldn't find any info in the manual or o rings for it on Rock Auto. Come to find out I have them all along. Next time though...

 

[Slyronious]

I just checked Marketplace and there's a guy in Indiana selling a junked 2.9 engine for part out for $75. The engine is in bad shape, but it does have the oil filter adapter. Maybe he could part it out to you. https://www.facebook.com/marketplace/item/951406874713059/