This is a brand new DNJ main bearing set for the 2.7L L5 DOHC turbocharged diesel engine found in 2002-2006 Dodge and Freightliner Sprinter 2500 and 3500 vans. The part number is MB1172.10. These are oversize bearings, specifically .010 inch oversize (which is 0.25mm). You only need oversize bearings if your engine's crankshaft journals have been machined (\ground\) to a larger diameter to clean them up – a common repair during an engine rebuild. This one set services the entire engine (all main bearing caps). DNJ is a trusted aftermarket brand for engine components with decades of experience. If you're rebuilding one of these Mercedes-derived diesel engines, using quality bearings like these is critical for longevity and proper oil clearance. Make absolutely sure your crankshaft has been machined to the correct oversize specification before ordering these. This is a professional-level engine rebuild part for mechanics or very experienced DIYers tackling a major Sprinter engine overhaul.