Compatible with 5 Series E60 and E61 models from 2003 to 2010.This set includes two rear air suspension springs, designed as direct replacements for the.Fits 520d, 520i, 523i, 525d, 525i, 525xd, 525xi, 530d, 530i, 530xd, 530xi, 535d, 545i, 550i, and M5 variants.Part numbers: 37126765602 and 37126765603.Installed on both left and right rear positions.Made from natural rubber with operating temperature range of -40 °C to 70 °C.Tested for air tightness at 0.02 MPa over 24 hours.Burst pressure rating of ≥2.0 MPa.Cycle-tested for exceeding 3, 000, 000 operations.Certified to ISO 9001:2015.