Broken Poploc - what one do I replace it with?

I have a Cube Acid 2010 Hardtail with Rockshox Dart 3 forks. The Poploc has broken at the lever and I'm looking to replace it but I haven't a clue what one I need to buy? There appear to be lots available online and a good few on eBay but they all have different part numbers - any idea which one I need which will fit Dart 3's? Or does it not really matter? Its mounted on the left bar if that makes any difference.
Thanks in advance for any assistance.
Thanks in advance for any assistance.

Ethernet (noun): Something used to catch the etherbunny.
Road : Pinarello FP1 | MTB : Cube Acid 2010
Road : Pinarello FP1 | MTB : Cube Acid 2010
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https://www.ebay.co.uk/itm/RockShox-PopLoc/254000260433?epid=18012045984&hash=item3b23986551:g:PCAAAOSwvhxb3LVZ:rk:1:pf:0&LH_Auction=1
Just make sure it's for the the side you want, I.E They do left over right under or right over left under.
Road : Pinarello FP1 | MTB : Cube Acid 2010