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AJ83526 - Thermostat O-Ring

- €12,50
€12,50
€12,50 - €12,50
€12,50
OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Brand Jaguar
Thermostat O-Ring for the 3.5L and 4.2L V8 naturally aspirated petrol engines, part of the engine cooling circuit.

The O-ring seals the coolant joint at the thermostat and water outlet, maintaining a leak-free connection between the coolant duct and pipe.
Fitment Notes JAGUAR — Thermostat & water outlet O-ring (coolant duct to pipe). V8 3.5L & 4.2L Naturally Aspirated. Fits S-TYPE 1999-2008 (from VIN M45255), XF 2009-2015, XJ 2003-2009, XK 2006-2014, XK8 (from VIN A30645). X100/X150/X200/X250/X350.
Alternative Codes
AJ83526

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What does the Thermostat O-Ring do?
The Thermostat O-Ring seals the coolant joint at the thermostat and water outlet on the 3.5L and 4.2L V8 naturally aspirated engines, keeping a leak-free connection between the coolant duct and pipe.
Should the O-ring be replaced when changing the thermostat?
Yes, renew the Thermostat O-Ring whenever you disturb the thermostat or water outlet. The old ring hardens and takes a set, so reusing it commonly causes a coolant weep. A fresh O-ring is cheap insurance against a leak after the job.
Which engines and models use this O-ring?
This Thermostat O-Ring fits the Jaguar 3.5L and 4.2L V8 naturally aspirated engines in the S-TYPE (1999-2008, from VIN M45255), XF (2009-2015), XJ (2003-2009), XK (2006-2014) and XK8 (from VIN A30645). Confirm your engine with the VIN.