Home » Oxygen Sensor Downstream Lambda for Jaguar X200 X250 XJ XF XK XJR S-Type 3.0 4.2

Oxygen Sensor Downstream Lambda for Jaguar X200 X250 XJ XF XK XJR S-Type 3.0 4.2

SKU: 1005012128673530-Default Title
Default Title
€47,36
-37% €75,77 €47,36

Upgrade your Jaguar with the Oxygen Sensor Downstream Lambda, a direct replacement designed for Jaguar models including S-TYPE (X200), XF (X250), XK, XJ, and XJR configurations with 3.0L or 4.2L engines. This downstream sensor monitors exhaust oxygen levels after the catalytic converter, sending precise data to the engine ECU to fine-tune the air-fuel ratio. The result is cleaner emissions, improved throttle response, and optimal fuel efficiency across a range of driving conditions.

Brand: IWOKPHD. This unit is a heated, piezoelectric downstream O2 sensor built to match the specifications and performance expectations of Jaguar applications. OEM references include 6R83-9G444-AB and 234-4951, with cross references such as 6R839G444AB and 2344951 to aid in compatibility checks. Origin: Mainland China. Note: Before ordering, please check product pictures, accessories and part numbers. If you are unsure, please send us a product picture or part number before ordering. In order to avoid wrong orders, please read the purchase guide carefully.

Benefits & Tips

  • Restore accurate downstream oxygen sensing to help the ECU optimize fuel trim and reduce unnecessary catalyst wear.
  • Use as a reliable replacement during maintenance or when diagnosing irregular fuel economy or emission readings.
  • Confirm compatibility with Jaguar S-TYPE, XF, XK, and XJ/XJR models by cross-referencing OEM numbers (6R83-9G444-AB, 234-4951) with your vehicle’s part listing.

Product Specifications

  • Sensor Type: Piezoelectric
  • Type: Heating
  • Measuring Range: Designed for Jaguar S-TYPE with 2.5L, 3.0L, 4.2L engines (1999–2015 range noted in documentation)
  • Compatible Models/Applications: Jaguar S-TYPE (X200) 2.5 V6; 3.0 V6; 4.0 V8; 4.2 V8 (including R models); Jaguar XF (X250) 3.0 and 4.2 Kompressor; Jaguar XK 8 Convertible (X100) 4.2; and related XJ/XJR/XK/XF variants listed in the fitment notes
  • OEM Numbers: 6R83-9G444-AB; 234-4951; Cross references include 6R839G444AB, 2344951
  • Origin: Mainland China
  • Warranty: 2 YEAR Warranty (Replacement Warranty)
  • Part Numbers Referenced: 6R83-9G444-AB, 6R839G444AB, 234-4951, 2344951, and related DOX-0302, DOX-0427 references

Package Includes

  • 1 x Oxygen Sensor

Warnings / Reminders

  • Before ordering, please check product pictures, accessories and part numbers. If you are unsure, please send us a product picture or part number before ordering.
  • In order to avoid wrong orders, please read the purchase guide carefully.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Trust note: Providing quality and trusted service since 2002 at intercyprus.com