Front subframe

[Bumpo411]

I'm looking for a front subframe for my Audi A4 B6 3.0 Quattro, 6-speed manual with sport suspension. The one I have on my car now is rotting I can buy brand new for $933 (cheapest i've found) but I really don't have the money because I need to replace my power steering rack at the same time. I was looking around and found one on eBay from Germany. The part number for my subframe is 8E0399313BG and with that, I was able to find this
http://www.ebay.com/itm/8E0399313M-8...WE8Ze#shpCntId
but it says it's for a 1.8T, but the part numbers match.

So my question is...Can I use a 1.8T subframe on my 3.0? Would the subframe in the link, work for my car?

[seanf86]

even if you have the sport suspension I thought the number ended in BD, the Audi dealer told me all the MT ones were the same 4 cyl or 6, I have a good MT subframe if youre interested.



here is the trans codes related to each subframe PN, I have one ending in BD if youre interested, let it go cheap.

[Bumpo411]

According to Genuineaudiparts.com, the part number is 8E0399313BG and the subframe without sport suspension is 8E0399313BD, but I don't know the difference but I'm guessing there has to be with different part numbers

[seanf86]

According to Genuineaudiparts.com, the part number is 8E0399313BG and the subframe without sport suspension is 8E0399313BD, but I don't know the difference but I'm guessing there has to be with different part numbers

you need PR code 1BV and trans code ENL ENN or EYQ to get the BG p/n subframe according to my etka

[Audii-Dudii]

There are plenty of used ones for sale on eBay. Find one that looks the same as your present one (some have extra brackets and/or missing or different mounting tabs) and you're good to go.

P.S.: If you want a performance upgrade, find one from an A4 Cabriolet, because they have solid aluminum bushings instead of rubber/metal ones. To wit:



Or if you want to maintain your car's OEM NVH performance, you can also use 3M Windo-weld urethane to fill the gaps in the OEM rubber/metal bushings, going from this:



to this:



FYI, tubes of 3M Window-weld can also be bought on eBay for around $18/tube, which is a much better deal than the $25+ Autozone gets for it, and one tube will do both the front and rear subframes (provided they're both of the car and ready to go at the same time, because once the tube is open, it must be used ASAP since it starts to cure immediately.)

While you're in there, another trick you can take advantage of is to use a large bolt, nuts, and washers through the alignment tab on the subframe to tie all the components together and minimize its lateral movement under load:



While the subframe tabs are fairly weak and flimsy, they are still strong enough to limit the amount the subframe can walk under load. (FWIW, I've had this mod on my car for 8k miles so far with no problems.) They will also limit the subframe's ability to move vertically under load as well, but at the expense of slightly increasing NVH.

And whenever you need to align the car afterward, you can easily remove them to install the subframe centering tools that should always be used before you start adjusting the tie-rod ends.

[Bumpo411]

you need PR code 1BV and trans code ENL ENN or EYQ to get the BG p/n subframe according to my etka

I'm not sure what my PR code is but my transmission code is GJV

[seanf86]

I'm not sure what my PR code is but my transmission code is GJV

PR codes are in your trunk on sticker by spare tire.

I did some checking since you didn't post what year your car was, I used 2002 and 2004, 2004 just says any car with PR 1BV gets pn BG, pn BD goes to cars with 1BD 1BE and 1BA.

Regardless, I've got a subframe that will work for you if you're interested, came off 02 1.8t quattro 5MT

[Audii-Dudii]

For centering tools, would any old rod or pry-bar work?

I've always used a pair of deep-well sockets that fit perfectly and hold them in place with a zip tie, so I've never the need to buy a fancy tool for this. As for moving the subframe around, the usual tools -- pry bar and rubber hammer -- have always been sufficient for me.

Can NVH be countered w/ better shocks, Koni FSD maybe?

No, because the NVH is transferring from the engine to the subrame and then into the bodyshell, which bypasses the shocks.

@100k mi + on sport subframe, mine has a lot of noticeable flex.
What would you recommend, metal cabriolet, or window-weld (I have TigerSeal)?

It depends upon what you're trying to achieve, how much additional NVH you're willing to accept, and your budget. Swapping to a used, low-mileage subframe is probably the easiest solution, but seam-welding your existing subframe and adding some reinforcement to it then stiffening the bushings to your taste is probably the most cost-effective option. I would only install a Cabriolet subframe if you need a new one anyway and your insurance is paying for it (or you're competing in the car and class rules require an OEM subframe), otherwise, I'd modify your existing one and add 034's aluminum bushings if you're tolerant of NVH or Windo-weld them if you're not.

[sandspeed]

If you have a little time to wait, I'm parting out my 3.0 6-speed A4 with sport suspension.

[alien_brain]

im in the market for a front subframe for my 2003 a4 avant 1.8t quattro if anyone has one for sale.

[seanf86]

im in the market for a front subframe for my 2003 a4 avant 1.8t quattro if anyone has one for sale.

Need to specify trans, I have a 2002 1.8t quattro 5mt one for sale

[alien_brain]

ok yeah 5mt. will the 2002 fit the 2003? did we already talk?

tranny makes a difference?

[seanf86]

ok yeah 5mt. will the 2002 fit the 2003? did we already talk?

tranny makes a difference?

Maybe we did, if we did i don't remeber, auto trans have tabs on subframe for mounts to bolt to, manual trans don't.

[alien_brain]

hey thanks i think ill attempt to find one here...

[DPDISXR4Ti]

P.S.: If you want a performance upgrade, find one from an A4 Cabriolet, because they have solid aluminum bushings instead of rubber/metal ones.

Didn't know this and your link is dead. Any idea if the bushings are just sold separately?

[Nollywood]

For those with 3.0 tip. or pre-2003 (01E) 6-speed manual, you can use the subframe from a B5 2.8 Quattro. Direct fit.

If you have a later B6 with the 02X 6-speed manual, you can still use the B5 subframe, 1.8T or 3.0, you just need to cut / grind off the B5 gearbox mounting tab/s That won’t be needed on a late B6.

[eljay]

Interesting that you front would be rotting before the rear.
I'm on the hunt for a rear one just to completely refresh my rear setup.

[Bumpo411]

Still looking for a front subframe. According to Audi USA parts, the front subframe I need can also be found in these vehicles.


Sent from my iPhone using Audizine

[lukydm]

For those with 3.0 tip. or pre-2003 (01E) 6-speed manual, you can use the subframe from a B5 2.8 Quattro. Direct fit.

If you have a later B6 with the 02X 6-speed manual, you can still use the B5 subframe, 1.8T or 3.0, you just need to cut / grind off the B5 gearbox mounting tab/s That won’t be needed on a late B6.

Is that true? I have same issue. I have later A4 b6 1BV sport suspension with 1.8T Q and I have another subframe from earlier b6 with gearbox mounting(spare car was a4 b6 1.8T automatic, quattro with 1BA suspension)
I quess, they are interchangeable.

[shurur9]

Is that true? I have same issue. I have later A4 b6 1BV sport suspension with 1.8T Q and I have another subframe from earlier b6 with gearbox mounting(spare car was a4 b6 1.8T automatic, quattro with 1BA suspension)
I quess, they are interchangeable.

You may have found this already.
I was planning to pull my subframe, but have opted to postpone this for now.

https://www.audizine.com/forum/showt...ibility-Thread