Which NGK spark plug for the LR4?

Discussion in 'LR4' started by ktm525, May 29, 2017.

  1. ktm525

    ktm525 Full Access Member

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    I know NGK makes the OEM plugs for the LR4. However when I plug the LR4 into the NGK site I get two plugs. Both iridiums but with different heat ranges.

    Which one is OEM? I may have to go pull one if I can't find it out on the net...

    NGK ILKAR7C10 or ILKAR6C10?
     
  2. gsxr

    gsxr Full Access Member

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    For the 5.0L V8 (Jaguar AJ133 engine), the FSM shows ILKR6C-10 gapped to 1.0mm. Might also show up somewhere in the owner's manual?
     
  3. ktm525

    ktm525 Full Access Member

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    Follow up. The 6C10 has been superseded by the 7C10. It's weird the replacement is a different heat range.
     
  4. ktm525

    ktm525 Full Access Member

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    Finally got around to doing the plugs. 6c10 came out and 7c10 went in. 6c10 discontinued and replaced by 7c10 which is different heat range
     

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