@SPT940 if your manual has Volvo Australia printed on it and has Volvo part number on it too, then I imagine a local supplier was contracted by Volvo Australia to produce this kit exclusively for the Australian market.
Market exclusive accessory is not uncommon. Japanese market had an electric retractable flagpole mounting kit for the 850, S/V/C70 & 940/960, similar to a mini electric aerial with LED light on top of the mast, fitted inside the left corner of the front bumper. That kit also has a genuine Volvo part number but I've never seen it anywhere outside Japan, so I'm willing to bet the part number is only good in Volvo Cars Japan's database & not anywhere else.