Year and model is not in your signature so- Sometime in 2002 the X5 headlight lens changed from removable to sealed. Lens only were not offered for either design. The whole assembly from BMW is very expensive. Many E53 owners go to aftermarket offerings that look much like current headlights. If Walmart balks at either price you should be able to find used units on Ebay and risk having them restored if they are not clear.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas