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The home of the first generation of ‘R’ performance Jaguar cars.
First Generation XJR Series 1
First Generation XJR Series 2
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Engine Decoder

Engine Number Decoder for Jaguar XJ40s. (UK Vehicles Only)

This application is to help you find out more about your car through the engine number.
This important code stores information regarding the engine in your car.

Type in your engine number in the box below and hit Decode.

   

Each digit or letter in your Engine Number provides you with a piece of information about your cars engine.

  • Position 1: Engine Manufacturer
  • Position 2: Engine Size and Type
  • Position 3: Fuel
  • Position 4: Compression Ratio
  • Position 5: Emission Specification
  • Position 6: Engine Specification Range
  • Position 7-12: Production Sequence Number