This is the bearing that forms the outer part of the Power Steering Tensioner. The Tensioner costs close to £80 and really consists of nothing more than this quality shielded bearing.
Two types exist, please see the Wiki page for the diagrams http://www.bigjimny.com/mediawiki/index.php/Drive_Belts
The type here is usually fitted to M13A engines. The bearing has a large centre and tends to be called the "smiley" centre due to its appearance.
The tensioner has BOTH a centre and an outer bearing rim that needs removing and the centre needs transfering to the new bearing, the part supplied is the outer bearing element ONLY
This part also fits some Vitara and Grand Vitara engines
Take a look at the images attached to this product. They show the outer rim and inner centre parts that need pressing.
The picture below shows a complete "smiley" tensioner - the part supplied is the bearing element ONLY
