Replacement rear air spring for BMW's self-levelling air suspension, built with a heavy-duty multi-ply, fabric-reinforced rubber air bladder and crimped end rings to resist the leaks and cracking common in aging OE bags. Restores correct ride height and load-levelling under changing loads, and gives a smoother ride than a sagging or leaking original spring, at a lower cost than genuine BMW.

Fitment: BMW X5 (E70/F15) and X6 (E71/F16) with self-levelling rear air suspension. Replaces OE numbers including 37107850225 and 37126773664 - sold individually, so order left/right/both as needed.