The H&R 29227-1 is a sport spring set for the 2007–2013 Audi A3 Quattro (8P), covering the all-wheel-drive 4-cylinder, V6 and TDI versions named in the product title. The manufacturer makes its springs at an ISO 9001-certified plant in Germany from 54SiCr6 spring steel and shot-peens them for longer service life, so this is a durability-focused upgrade rather than a budget coil. The manufacturer positions its sport line as a way to tighten handling by lowering the center of gravity while keeping ride quality close to factory.
Stock coils are tuned for comfort and ride height, and a generic budget spring rarely matches a German-built part for consistency of material and finish. If you want a visibly lower stance on a 8P A3 Quattro without going to a stiff race-oriented setup, this sport spring is the more measured choice. Exact drop varies by source, so confirm the front and rear lowering with the manufacturer before ordering, especially if you run lowered or adjustable dampers. Search terms this part matches include 8P A3 quattro lowering springs, 29227-1 sport springs, 2007-2013 A3 AWD sport springs and A3 TDI quattro lowering springs.
The manufacturer states its springs fit the same way stock springs do. If a spring looks identical at both ends, install it with the closer coils up. If one end is smaller than the other, match the factory orientation.
The manufacturer explains that the number on the box is the product part number, while the number on each spring is a component part number.
The manufacturer advises calling H&R at (888) 827-8881 with the vehicle's year, make, model and the product part number to verify fitment.
The manufacturer describes its sport line as lowering roughly 1.5 to 1.8 inches on average, but the exact drop for this specific kit is not confirmed here, so check the front and rear figures with the manufacturer.
The manufacturer's guidance indicates these springs mount like OEM springs, so the job is a standard coil spring replacement. Before you start, check the spring ends for orientation and confirm the box part number matches what you ordered. A spring compressor and properly supported stands are needed for the coil swap, and no manufacturer install sheet was located in this research, so review the factory procedure for your model before disassembly.