5-wire LSU4 Wideband oxygen sensor with 2x3=6 pin (U-shaped) connector. VEMS Genboard V3.x (and VEMS Round WBO2 and EGT gauge) was designed to work with this sensor.
Usually Bosch 0 258 007 057/058 (or 0 258 007 351 or 0 258 007 113/114 or 0 258 007 063/064 ) but the same sensor is available with different cable-length. Which one is actually available from stock varies.

• "With connector=yes" means matching wideband connector,
• "With crimped wire" also includes wires with crimped receptacles.