Belt Tensioner & Pulley for AC Belt - URO - N62 Engine

This is the mechanical A/C belt tensioner used on 2004-2005 E65 745i, 745Li and 2004-2006 E53 X5 4.4i/4.8is with the N62 V8 engine. The tensioner keeps the A/C belt at the proper tension for driving the A/C compressor. A failing tensioner will allow the belt to loosen or slip resulting in diminished performance.

Replaces the following BMW part numbers: 
11287549589 (11-28-7-549-589) 
11287505566 (11-28-7-505-566)