It has the following manufacturer approvals:Mercedes MB 229

front spring rate 16KG

2 2000-2006

Quattro (94-97) Specifications

HR K-Swap Cold Air Intake System Master (Mk3 Facelift) (2019-) It has the following manufacturerFull 3" inner diameter. Glass reinforced silicone construction. Designed to keep intake air temps down Includes velocity stack filter. Stainless steel t bolt clamp. Works with PRB, RBC & RRC manifolds. Cleanest intake on the market. We took a somewhat unconventional approach when it came time to design our K Swap cold air intake. Our hope was to provide something that could improve upon the performance and appearance of competing cold air intakes and