This MAHLE piston ring set (part number 083 12 N0) replaces the compression and oil-control rings that seal the combustion chamber, control oil film on the cylinder wall, and transfer heat from the piston to the bore. It fits BMW 540i/740i/740iL/X5 applications listed in the fitment table below. MAHLE built its reputation on piston and filtration engineering over more than a century and supplies these parts at OE quality across European applications.Technical Details Manufacturer part number: 083 12 N0 Part type: Piston Ring Set Vehicle system: engine cylinder assembly Fitment & CompatibilityUse the fitment table below to confirm year, make, model, submodel, and any application notes before ordering.With over 20 years working on European applications and fitment, PMB Performance can help you confirm the right part. Reach out with your VIN if the application needs checking. Year Make Model Submodel Notes 1998 BMW 540i 1999 BMW 540i 1999 BMW 540i 2000 BMW 540i 2001 BMW 540i 2002 BMW 540i 2003 BMW 540i 1998 BMW 740i 1999 BMW 740i 2000 BMW 740i 2001 BMW 740i 1998 BMW 740iL 1999 BMW 740iL 2000 BMW 740iL 2001 BMW 740iL 2000 BMW X5 2001 BMW X5 4.4i 2002 BMW X5 4.4i 2003 BMW X5 4.4i