4x Upstream & Downstream O2 Oxygen Sensor for Porsche Boxster 1997-1999 H6 2.5L

O2 Oxygen Sensor for Porsche Boxster 1997-2003 H6 2.5L 3.2L 4 Wires Downstream

Oxygen O2 Sensor for 2000-2003 Porsche Boxster 2.7L 3.2L Upstream or Downstream

Upstream or Downstream O2 Oxygen Sensor for Porsche Boxster 97-99 2.5L 2003 3.2L

AISIN Upstream or Downstream Oxygen (O2) Sensor for Porsche Boxster H6 2.5L 3.2L

Bosch 15182 Oxygen O2 Sensor for 2000-2003 Porsche Boxster 2.7L 3.2L UPSTREAM

Set of 4 O2 Oxygen Sensor for Porsche Boxster 2000-2003 Downstream and Upstream

Bosch 15183 Oxygen O2 Sensor for 2000-2003 Porsche Boxster 2.7L 3.2L DOWNSTREAM