Jaguar Upstream O2 Oxygen Sensor 234-9125 for XF XFR XJ8 XK XK8 XJR XKR

The Jaguar Upstream O2 Oxygen Sensor 234-9125 is a precise, plug‑and‑play replacement designed to restore optimal exhaust sensing for a wide range of Jaguar models. As the upstream sensor in the exhaust stream, it continually monitors oxygen levels before the catalytic converter and sends real‑time feedback to the engine control unit. That data helps maintain the ideal air‑fuel mixture, resulting in smoother throttle response, improved fuel efficiency, and cleaner emissions across your Jaguar’s V8 lineup.

This sensor is compatible with a broad array of models including Jaguar S-Type, Super V8, Vanden Plas, XF, XFR, XJ8, XK, XK8, XJR, and XKR, covering years from mid‑2000s to early 2010s. It carries OEM references such as 234‑9125, 2349125, and 234 9125, with multiple cross‑numbers to aid in correct matching. The upstream design and piezoelectric sensing (with heating) deliver fast, reliable response, even in challenging driving conditions.

Designed for use on Jaguar engines with 3.0L V6, 4.2L V8 (including Supercharged variants), and 5.0L V8 powertrains, this sensor is a direct replacement for the sensor used on many XF, XFR, XJ, XK, S-Type, and related models. It’s sourced for compatibility with production variants such as S-Type (2006–2008), Super V8 (2006–2009), Vanden Plas (2006–2009), XF (2009–2011), XFR (2010–2011), XJ8 (2006–2009), XK (2007–2009), XK8 (2006), XJR (2006–2009), and XKR (2006–2009). Its upstream placement and heating feature help ensure accurate readings and quick sensor readiness after startup.

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Benefits & Tips

• Restore optimal sensor performance to improve fuel economy and reduce emissions on your Jaguar’s 4.2L and 5.0L V8 engines.
• Direct‑fit replacement using the 234‑9125 family of part numbers ensures compatibility with S-Type, XF, XFR, XJ, XK, XJR, and XKR models listed in the applications.
• Tip: After installation, clear any stored codes and run a short drive to confirm the O2 sensor is reporting properly and the check engine light remains off.

Product specifications

• Brand: IWOKPHD
• Sensor type: Piezoelectric
• Heating: Heating Type
• OEM numbers: 234-9125, 2349125, 234 9125, 75-3907, 25698, C2C22681, 6R83-9F472-AC
• Alternate part numbers: C2P8810, 15375, 753907, 2134369, 2132855, 25631, AP4655, KN4655
• Origin: Mainland China
• Measuring range: Upstream oxygen sensor for Jaguar XF, XK, XJ8, XFR, S-Type, Super V8, Vanden Plas
• Applications (selected): Jaguar S-Type (2006–2008, 3.0L V6), S-Type (2006–2008, 4.2L V8), S-Type (2006–2008, 4.2L V8 Supercharged), Super V8 (2006–2007, 4.2L V8), Super V8 (2006–2009, 4.2L V8 Supercharged), Vanden Plas (2006–2009, 4.2L V8), XF (2009–2011, 4.2L V8), XF (2009, 4.2L V8 Supercharged), XF (2010–2011, 5.0L V8), XF (2010–2011, 5.0L V8 Supercharged), XFR (2010–2011, 5.0L V8 Supercharged), XJ8 (2006–2009, 4.2L V8), XK (2007–2009, 4.2L V8), XK8 (2006, 4.2L V8), XJR (2006–2009, 4.2L V8 Supercharged), XKR (2006–2009, 4.2L V8 Supercharged)
• Warranty: 2 years (Replacement Warranty)

Package includes:

• 1 pcs

Warnings/Reminders

• Includes a 2‑year replacement warranty; follow installation guidelines to ensure proper fitment.
• Verify model and year compatibility against the listed applications before purchase.
• All items ship within 2 working days after payment is confirmed; import duties and taxes are not included where applicable.