OE-standard installation, easy to install, direct replacement. Part numbers: 0258007135, 0 258 007 135, 234-5703, 8670279, 8658133, 258007135, 234-5703, LSU-4.2, LSU4.2, LS 7135, LS7135. Compatibility and fit - Fit For Volvo S80 3.0L T6 2001-2006 - Fit For Volvo XC90 2.9L T6 2002-2006 Key benefits - Direct replacement using original equipment standards for reliable fit and operation - Wideband sensing with LSU-4.2 ensures accurate air fuel ratio data for proper engine management - Supports emissions compliance and consistent engine performance What this solves - Replaces a faulty sensor to restore smooth idle, fuel economy, and correct diagnostic readings - Reduces guesswork and downtime when servicing Volvo S80 and XC90 models Use scenarios - During scheduled maintenance or when diagnostic codes indicate a faulty oxygen sensor on Volvo S80 3.0L T6 or XC90 2.9L T6 - In a vehicle diagnostics session to achieve accurate wideband readings for tuning or troubleshooting - As part of a full OE parts replacement to maintain original vehicle performance and reliability