Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
Gearbox and Diff drain plug washers
-
- Member
- Posts: 64
- Joined: Fri Mar 12, 2021 6:34 pm
- Location: Worthing
Gearbox and Diff drain plug washers
After going through the forum and speaking to Opie oils I’ve gone for Red Line MTLV for the gearbox and Castrol trans max for the diff but am unsure if I need washers for the drain plugs. I’ve just got 2 new plugs from BMW but only one has an o ring washer and apparently nothing listed for the other plug. I have also just read some diffs do not have a drain plug. Any help please.
- Attachments
-
- 2F0973A9-AC40-41A1-AF6B-FE4A7F05017B.jpeg (106.19 KiB) Viewed 996 times
2.5Si Carbon Black
Silverstone leather
Z3 2.8 Widebody gone
Silverstone leather
Z3 2.8 Widebody gone
- BumpyZ4
- Member
- Posts: 585
- Joined: Mon Feb 17, 2020 8:05 pm
- Location: New Orleans, LA USA
Gearbox and Diff drain plug washers
The one with the green o-ring is for the differential (fill and drain plugs are the same). The other one is for the manual transmission (drain and fill plugs are the same) and if you look close it should have a built in metal gasket. I've read the same thing that some diffs don't have drain plugs but I can't verify it.
2003 E85 3.0i Sterling Gray
KLR 650
Diva Roadster (Kit Car)
KLR 650
Diva Roadster (Kit Car)
- Jakg
- Member
- Posts: 367
- Joined: Thu Mar 29, 2018 12:36 am
- Location: Suffolk
Gearbox and Diff drain plug washers
I'm not 100%, but I would get new washers. They aren't expensive off eBay - I replaced the oil sump, gearbox and diff drain plugs with magnetic ones.
Check for your exact car, but I think the diff seal is 07119963355 and the gearbox plug has an integrated washer.
Check for your exact car, but I think the diff seal is 07119963355 and the gearbox plug has an integrated washer.
-
- Member
- Posts: 64
- Joined: Fri Mar 12, 2021 6:34 pm
- Location: Worthing
Gearbox and Diff drain plug washers
I checked with my parts man at Chandlers where I got the plugs from and he spoke with a technician who said they self seal and I also picked up a thread on the forum that said the same thing so hopefully it will be okay. It also seems that it’s E86 boxes for some reason that don’t have drain plugs.
2.5Si Carbon Black
Silverstone leather
Z3 2.8 Widebody gone
Silverstone leather
Z3 2.8 Widebody gone
-
- Member
- Posts: 875
- Joined: Sun Apr 26, 2015 7:16 pm
Gearbox and Diff drain plug washers
My first E46 3 series coupe didn't have a diff drain plug.. It was the 318ci. The 6 cyl 320ci and above did though.
-
- Member
- Posts: 64
- Joined: Fri Mar 12, 2021 6:34 pm
- Location: Worthing
Gearbox and Diff drain plug washers
Both oils changed the RedLine gear oil does seem rather thin but the gear change does seem slightly improved. The gearbox plug supplied by BMW was different to the one we took out which seemed longer and did have a washer so we reused it. Both the gearbox and diff oil seemed okay not too black and didn’t have any particles in either. Cleared out the hood drain plugs while on the ramp as well.
I will probably take off the road soon so all my other planned work will start around April May.
I will probably take off the road soon so all my other planned work will start around April May.
2.5Si Carbon Black
Silverstone leather
Z3 2.8 Widebody gone
Silverstone leather
Z3 2.8 Widebody gone
-
- Member
- Posts: 738
- Joined: Sat May 11, 2019 10:12 pm
- Location: Thatcham, Berkshire
Gearbox and Diff drain plug washers
E86 have a drain and fill plugs on the box but only a fill plug on the diff.BostonJohn wrote: ↑Mon Sep 20, 2021 6:37 pm I checked with my parts man at Chandlers where I got the plugs from and he spoke with a technician who said they self seal and I also picked up a thread on the forum that said the same thing so hopefully it will be okay. It also seems that it’s E86 boxes for some reason that don’t have drain plugs.
E86 In sapphire black
- colb
- Senior Member
- Posts: 1623
- Joined: Wed Nov 13, 2019 9:45 pm
- Location: Newport, South Wales UK
Gearbox and Diff drain plug washers
My 2003 2.5 has tapered thread plugs on the gearbox fill and drain plugs, no sealing washers, the diff however has alloy sealing washers on the fill and drain plugs, these alloy washer corrode with age and turn to lace, same on Z3's. Replaced mine on the Z4 and Z3 with copper washers.
Z4 2.5 sealing washers for diff are No 5 in the diagram here
https://www.realoem.com/bmw/enUS/showpa ... Id=33_1147
Gearbox plugs are No 16 here
https://www.realoem.com/bmw/enUS/showpa ... Id=23_0234
Z4 2.5 sealing washers for diff are No 5 in the diagram here
https://www.realoem.com/bmw/enUS/showpa ... Id=33_1147
Gearbox plugs are No 16 here
https://www.realoem.com/bmw/enUS/showpa ... Id=23_0234
Z Shed Cymru member
1999 1.8 Z3
2003 2.5 Z4
1998 Honda Deauville 650
If the forum helped you, why not help the forum back. Thats the Z4 way!
https://www.paypal.com/cgi-bin/webscr?c ... source=url
1999 1.8 Z3
2003 2.5 Z4
1998 Honda Deauville 650
If the forum helped you, why not help the forum back. Thats the Z4 way!
https://www.paypal.com/cgi-bin/webscr?c ... source=url
-
- Newbie
- Posts: 13
- Joined: Sun Sep 12, 2021 7:25 pm
- Location: Missouri - US
Gearbox and Diff drain plug washers
I have an 06 3.0si and the trans had a drain and fill plug with a green o-ring built into the plug (like the plug on the right does. it looks like the one on the left might have one too, but hard to tell in that image). The diff had the same thing but only had a fill plug, not a drain plug. Had to syphon the old oil out with a pump. I haven't seen anything definitive on which cars came with fill and drain plugs vs which only came with a fill plug
2006 E85 3.0si - Sapphire Black
- enuff_zed
- Lifer
- Posts: 14390
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Gearbox and Diff drain plug washers
Just did exactly this job on my 04 2.2i.
Took out all the plugs and no real sign of any separate washers, just the green bit on the diff one.
as I hadn't read this thread at that point I popped then all back in as they were and no signs of any leaks.
A good tip if you've not already done this - make sure the fill plug will come out first.
Draining it then finding the fill plug is seized is a bit of a bugger!
Took out all the plugs and no real sign of any separate washers, just the green bit on the diff one.
as I hadn't read this thread at that point I popped then all back in as they were and no signs of any leaks.
A good tip if you've not already done this - make sure the fill plug will come out first.
Draining it then finding the fill plug is seized is a bit of a bugger!