H&R 08-14 Mercedes-Benz C300 4MATIC Coupe/Sedan/C350 4MATIC Coupe/Sedan (AWD) W204 Sport Spring - 29076-5 Radiator Hoses Its optional auxiliary air inlet

Its optional auxiliary air inlet can be plugged with an included silicone plug if desired

For ease of installation

It depends on your priorities and expectations:

5 Liter S5D320Z

H&R 08-14 Mercedes-Benz C300 4MATIC Coupe/Sedan/C350 4MATIC Coupe/Sedan (AWD) W204 Sport Spring - 29076-5 Radiator Hoses Its optional auxiliary air inletSport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R'sport Springs lower the vehicle's center of gravity and reduce body roll for better handling. The progressive spring rate design provides superb ride quality and comfort. A lower wind resistance signature will make the vehicle more streamlined and improve gas mileage. If you are only looking to improve one part of your vehicle's