Piston Ring Set (Single Piston), Mahle OEM - E46, E39, E60, E83, E53, Z3, E85, M54 3.0-liter

This parts set is listed by BMW as BMW part number 11257506252 (11 25 7 506 252) and is described as "Repair Kit Piston Rings". This is the set of 3 piston rings for a single piston on the M54B30 (3.0-liter) engine used in the E46, E39, E60, X3, X5, Z3, and Z4 models. This particular set is made by Mahle, an original equipment manufacturer (OE or OEM) for BMW. 

This Piston Ring Set (84.00 mm, standard size) for M54 3.0L Engines, and provides the rings to replace one piston's worth of rings. This particular piston ring size is specific to the 3.0 liter M54 engine, as used in E46 330i / 330xi (2001-2005), 330Ci (2001-2006) , E60 530i (2004-2005), first generation BMW X3 3.0 liter (2003-2006), first generation X5 3.0 liter (2001-2005), and Z4 3.0 liter (2003-2005). 

Sold by the cylinder. Be sure to order 6 of these if you are refreshing the rings on the entire engine. 

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.