Suplex 03172 AS all models (unclear if sport) 338 107 9.75
Spidan 49546 AS all models, no OSS 338 107 9.75
Sachs 996648 AS no OSS 338 107 9.75
TRW JCS782 AS all models (unclear if sport) 338 107 9.75
There's a listing for the Sachs 996648 rear springs to replace 8Z0 511 115 AS on ebay.co.uk
Find many great new & used options and get the best deals for 2x Sachs 996648 Rear Suspension Coil Springs AUDI A2 1.4/1.4D/1.6 at the best online prices at eBay! Free delivery for many products!
www.ebay.co.uk
There's also a listing for the Sachs 997854 front springs to replace 8Z0 411 105 AL on ebay.co.uk. These would be suitable for the 1.4 TDI without panaroma sunroof. Apparently, the front coil springs for the 1.4 TDI with panaroma sunroof have a different part number.
Find many great new & used options and get the best deals for 2x Sachs 997854 Front Suspension Coil Springs AUDI A2 1.4D/1.6 at the best online prices at eBay! Free delivery for many products!
www.ebay.co.uk
Also check out the gknautomotive.com online catalogue for Spidan coil springs with matching OEM part numbers. This is a useful catalogue as it gives the specification of each spring such as length, outside diameter, wire thickness, and weight. You can also use the OEM part number to search for the Spidan version.
autodoc.co.uk is another useful website where you can find the part numbers for the Suplex, Spidan, Sachs, and TRW coil springs. I have used autodoc.co.uk once for springs, but the box had already been opened and inside was the wrong spring...so I wouldn't recommend them. Probably best to stick to ebay and even then only from a reputable seller.
Spidan only list two rear springs for the Audi A2, standard and reinforced which makes choosing replacement rear springs easy. Just go for the standard version unless you tow a caravan or have another reason for an extra hard spring. Spidan list about four front springs for the Audi A2, as each spring is closely matched to the weight of the engine and sometimes varies if you've got a panaroma sunroof.
Often with aftermarket springs, manufacturers adopt a one size fits all approach. This is where you see one aftermarket spring being sold to replace multiple OEM numbers where these OEM numbers have different specifications, eg. different compression rates and different lengths, etc. This is where it's best to find an aftermarket spring that only matches the OEM part number that you want and no other part numbers. It seems that where multiple OEM part numbers with different specifications are used, then the aftermarket part will tend to match the hardest spring in that selection. This is where you could end up with a harder spring than intended. I recently came across such underhand marketing with Lesjofors/Kilen springs (same company). Lesjofors/Kilen don't mark the part number on the spring, except for some unintelligible manufacturer's code. This means that you've no way of checking whether the spring inside the box is what you ordered. Lesjofors/Kilen don't even give the specification of the spring such as length, outside diameter, wire thickness, weight. I would not recommend Lesjofors/Kilen springs for these reasons.