BILSTEIN 40-232003 Shock absorber spring rear right B3 (R3.2) BMW E39 Airmatic ymm_33 The competition intercooler core (tube

The competition intercooler core (tube fin) and cast aluminum end boxes

The OEM Coolant Overflow Tank for the 2015+ WRX/STI does its job well enough but the cheap plastic material is ugly and will potentially crack over time

CAD-designed and CFD-optimized aluminum cast end tanks

GT Series compressor wheel design for stable performance

This version is equipped with an integrated universal side airbag (SAB) and seat heating

BILSTEIN 40-232003 Shock absorber spring rear right B3 (R3.2) BMW E39 Airmatic ymm_33 The competition intercooler core (tubeDescription BILSTEIN 40 232003 Rear Right Air Spring, suspension B3 OE Replacement (Air) The BILSTEIN B3 air spring is designed as an ideal OE replacement for vehicles where the air suspension and shock absorber are installed separately. Manufactured as a 100% new part, it delivers driving performance and comfort equivalent to the original equipment. The BILSTEIN B3 air suspension range provides extensive coverage for OE air suspension systems,