4x Pistons fits Mercedes 190 W201 OM601 87mm Bore STD 88-743600-10Cylinder Bore [mm] () 87. 0 mm Valve Recess Depth 1 (VT) 1. 05 mm Length [mm] (L) 74. 85 mm Valve Recess Depth 2 (VT) 1. 25 mm Compression height (KH) 44. 85 mm Valve Recess Diameter 2 37. 0 mm Valve Recess Diameter 1 40. 0 mm Recess Volume 6. 6 cm Combustion Chamber Depth (MT) 9. 05 mm Top land height [mm] (F) 12. 8 mm Combustion chamber offset (MV) 19. 0 mm Distance between bosses (AA) 22. 15 mm Pin O. D. (Bo) 26. 0 mm Pin I. D. 14. 0 mm Pin Length