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Rear Subframe Replacement - Will a MK7/MQB platform rear subframe fit?

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gj124:
The rust on the rear subframe/axle carrier is now so bad that it has a few pound coin sized holes in it, so will need replacement. There's no way I'm buying one of the cheap chinese ones on ebay so the plan is to source one in decent condition from a newer car (Audi A3/TT/Octavia etc etc). The subframe from a MK7 Golf/A3 looks visually identical to the one on my MK5 but has a totally different part number so I'm not sure if it'll fit. There are plenty of these in decent condition. Has anyone tried to fit a subframe from an MQB platform car with any success? The only difference I can see is the exhaust mounting bracket not being in the same place but that's easily fixed with a grinder and mig welder.

I was genuinely shocked to see how bad the rust was. Last year i stripped the rear axle from my 1995 BMW and that was nowhere near as bad.

GreigC:
Buy a second hand MK5 one that’s in good condition. Then refurbish/powdercoat it. I very much doubt any subframe after the MK6 would fit correctly on the MK5.

gj124:
I would have to be very lucky to come across a MK5 subframe that's in good condition, hence why I'm asking if anyone has tried to fit one from a newer model... Plus even if I did find one that was worth blasting and painting I'd be spending a fair whack before it's even gone on the car, I've seen loads of MK7 ones for circa £100 on ebay. Verkline sell a tubular subframe that fits MK5,MK6 and MK7 so the mounting points must be the same. Nothing much else to worry about really apart from the exhaust hangers which are easily modified.

https://www.awesomegti.com/shop-by-car/volkswagen/golf-mk5/control-arms/verkline-rear-lightweight-tubular-subframe-mqb-pq35-2wd/

GreigC:
As I don’t know I can’t help you any further with an exact yes or no to your original question… although I’ll give you my opinion. PQ platform to MQB I’d be aware of geometry/fitment issues personally.

I’m sure I’ve read somewhere Audi S3 8P/R32 MK5 early subframes are aluminium vs steel on the Golf. Although can’t confirm 100%.

gj124:

--- Quote from: GreigC on October 12, 2023, 08:15:39 am ---As I don’t know I can’t help you any further with an exact yes or no to your original question… although I’ll give you my opinion. PQ platform to MQB I’d be aware of geometry/fitment issues personally.

I’m sure I’ve read somewhere Audi S3 8P/R32 MK5 early subframes are aluminium vs steel on the Golf. Although can’t confirm 100%.

--- End quote ---

Thanks for the input but not really interested in your opinion since you don't seem to know what you're talking about, but seem happy to make assumptions and give advice despite having no experience or knowledge on the subject matter. I'm sorry if that comes across like I'm having a go personally, it's just something that grinds my gears on forums/social media.

Yes S3/R32 subframes are alloy but are a different design for obvious reasons. If I could find one for the FWD platform i'd be after it like a shot!

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