Rare parts in 45521-1: Computer Science & AI Kit Year 4-6

This set inventory has been obtained from LEGO Customer Services replacement parts page. It was retrieved on 14 January 2026 and contains 277 pieces.

Important note: We do not control this inventory and cannot currently make changes to it. Use it as a guide to the contents of the set, or to find out part numbers when requesting replacements.

Element Image Qty Colour Category Design Element name Element
in sets		 Element
introduced in		 Design
in sets		 Design
introduced in
6544526 <h1><a href='/parts/6544526/design-plate-2x3-no-1'>DESIGN, PLATE, 2X3, NO. 1</a></h1><div class='tags floatleft'><a href='/parts/6544526/design-plate-2x3-no-1'>6544526</a> <a href='/parts/design-5518'>5518</a> <a href='/parts/platform-System'>System</a> <a href='/parts/category-Miscellaneous'>Miscellaneous</a> <a href='/parts/colour-Bright-Bluish-Green'>Bright Bluish Green</a> <a href='/parts/year-2025'>2025</a></div><div class='floatright'>©2025 LEGO Group</div>

DESIGN, PLATE, 2X3, NO. 1

6544526 5518 System Miscellaneous Bright Bluish Green 2025
©2025 LEGO Group
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4 Bright Bluish Green Miscellaneous 5518 DESIGN, PLATE, 2X3, NO. 1 3 2025 23 2024
6548957 <h1><a href='/parts/6548957/leaf-2x6x1-no-1'>LEAF 2X6X1, NO. 1</a></h1><div class='tags floatleft'><a href='/parts/6548957/leaf-2x6x1-no-1'>6548957</a> <a href='/parts/design-3565'>3565</a> <a href='/parts/platform-System'>System</a> <a href='/parts/category-Animals-Nature'>Animals & Nature</a> <a href='/parts/colour-Transparent'>Transparent</a> <a href='/parts/year-2025'>2025</a></div><div class='floatright'>©2025 LEGO Group</div>

LEAF 2X6X1, NO. 1

6548957 3565 System Animals & Nature Transparent 2025
©2025 LEGO Group
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4 Transparent Animals & Nature 3565 LEAF 2X6X1, NO. 1 3 2025 64 2023