The dealer gave me part numbers
NNE2502cb and NNE2504ba for my 2001 pass side camshafts.
I found NNE2502ab and NNE2504ab from a 1999 XJR on ebay.
Are the last two alpha characters of the part number of significance?
I'm hoping 1999 and 2001 4.0 supercharged used the same cams...does anyone know?
Thank you,
ToronadoMike

 

Its a long time ago I looked at it, but I still know that they have different timings. You could probably just swap them, but I can't tell you which one is better for you engine (but with the ones desigined for your engine are obvioulsy safest).