One pic is not enough to help.
You need to compare each new component with the old one. If still unsure why it won't go together, we'd need better pics, not just close-ups.
Did you buy a kit? Or separate components? Are the bits in the box all new and clean? Was the box undamaged, or previously opened? It is not uncommon for repairers to return 'unwanted' items, having mixed parts from two kits, either inadvertently, or deliberately, and the stockist does not notice. then the next purchaser gets a duff set.
Did you buy locally? If there is a choice of kit, clean the old ones up, and take it all to the supplier, let them help select the correct parts. Try not to get the new stuff dirty, as they become very difficult to resell, for the reasons above, so refunds become a problem.