The part number for the rivet is 51-71-8-219-511

If you tell the parts counter to look-up the install kit for the body flares it's an indented BOM #51-11-7-073-517 of which the above part number is part of (including 51-71-7-002-953)

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03' X5 4.4i Black Sapphire/Black
04' Land Rover Range Rover HSE
95' Jeep GC Ltd