The H&R 29739-3 is a set of sport lowering springs for the 1995–1999 Mercedes-Benz W140 S-Class, covering the S320, S400, S420 and S500 built after January 1, 1995 without self-leveling suspension. The manufacturer makes its lowering springs in Germany from hardened and tempered spring steel, with zinc phosphating and a powder coat, usually in H&R Blue. The company tunes them to work with the car's original shock absorbers, so you get a lower center of gravity and a sportier stance while keeping standard ride comfort.
Stock W140 coils sit high and soft, and the lowered stance here is the main visible upgrade. Owners on user forums describe the change as the biggest visual and handling payoff for the money, and many add uprated front dampers to control the extra motion. The manufacturer's own materials describe the springs as matched to the original dampers, so opinions differ on whether a shock upgrade is needed. Confirm your damper plan with H&R before ordering. For a W140 owner searching for 1995 S420 sport springs, S500 lowering springs without self-leveling, or a direct H&R fit for an S320, this part is a straightforward, Germany-built option.
No. This H&R kit is designed for W140 models without self-leveling and built after January 1, 1995. Check your car's suspension setup before ordering.
The manufacturer states that H&R lowering springs are set up to work with the original shock absorbers. Owners on user forums often upgrade the front dampers when lowering a W140, so the choice depends on your driving style and how much control you want.
This is a moderate DIY job. Rear springs are the easier side. The front springs sit inside the strut assembly and need a proper spring compressor. Owners on user forums report that loosening the lower pinch bolt, or temporarily removing it, gives enough room to get the old spring out and the new one in. Work on one corner at a time so you can use the old parts as a reference, and make sure the springs seat correctly on both sides. Plan on a wheel alignment after installation.
