Engine Jaguar AJ33

The Jaguar AJ33 4.2-litre V8 petrol engine was built by Jaguar from 2002 to 2009 and was used in models such as the XK8 and XJ8, as well as the S-Type, but there it was most often called the AJ36. In addition to the 4.2-liter engine, a 3.5-liter power unit was offered under this index.

AJ-V8 series: AJ126, AJ27, AJ27S, AJ28, AJ33, AJ33S, AJ34, AJ34S, AJ133, AJ133S.


Production years 2002-2009
Displacement, cc 3555
Fuel system distributed injection
Power output, hp 258 (3.5 liters)
298 (4.2 liters)
Torque output, Nm 335 – 355 (3.5 liters)
411 (4.2 liters)
Cylinder block aluminum V8
Block head aluminum 32v
Cylinder bore, mm 86
Piston stroke, mm 76.5 (3.5 liters)
90.3 (4.2 liters)
Compression ratio 11.0
Features DOHC
Hydraulic lifters no
Timing drive chain
Phase regulator yes
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 6.0
Fuel type petrol
Euro standards EURO 3
Fuel consumption, L/100 km (for Jaguar XJ 2003)
— city
— highway
— combined
Engine lifespan, km ~450 000

The engine was installed on:

  • Jaguar S-Type 1 (X200) in 2002 – 2004;
  • Jaguar XJ 7 (X350) in 2003 – 2009;
  • Jaguar XK 1 (X100) in 2002 – 2006; XK 2 (X150) in 2007 – 2009.

Disadvantages of the Jaguar AJ33 engine

  • In terms of reliability, this unit has no big problems, but fuel consumption is high;
  • Also, there are no problematic phase regulators of the VVT type;
  • The aluminum motor is afraid of overheating, monitor the condition of the radiator and pump;
  • Search for the cause of unstable engine operation, start by uploading a fresh ECU firmware;
  • The rest of the problems are related to sensor glitches and leaks of lubricant or antifreeze.

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