Power Steering Tensioner (M13A)

This is an aftermarket power Steering Tensioner bearing.

Two types of tensioner 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.

This part also fits some Vitara and Grand Vitara engines