Rare parts in 45621-1: Science Kit Year 4-6

This set inventory has been obtained from LEGO Customer Services replacement parts page. It was retrieved on 3 October 2025 and contains 294 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
6492701 <h1><a href='/parts/6492701/plate-2x2x2-3-w-function-no-1'>PLATE, 2X2X2/3, W/ FUNCTION, NO. 1</a></h1><div class='tags floatleft'><a href='/parts/6492701/plate-2x2x2-3-w-function-no-1'>6492701</a> <a href='/parts/design-109373'>109373</a> <a href='/parts/platform-System'>System</a> <a href='/parts/category-Miscellaneous'>Miscellaneous</a> <a href='/parts/colour-Black'>Black</a> <a href='/parts/year-2025'>2025</a></div><div class='floatright'>©2025 LEGO Group</div>

PLATE, 2X2X2/3, W/ FUNCTION, NO. 1

6492701 109373 System Miscellaneous Black 2025
©2025 LEGO Group
« Previous Next »
4 Black Miscellaneous 109373 PLATE, 2X2X2/3, W/ FUNCTION, NO. 1 3 2025 3 2025
6482578 <h1><a href='/parts/6482578/plate-8x16x2-3-cir-w-reduced-knobs'>PLATE, 8X16X2/3, CIR., W/ REDUCED KNOBS</a></h1><div class='tags floatleft'><a href='/parts/6482578/plate-8x16x2-3-cir-w-reduced-knobs'>6482578</a> <a href='/parts/design-5251'>5251</a> <a href='/parts/platform-System'>System</a> <a href='/parts/category-Plates'>Plates</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>

PLATE, 8X16X2/3, CIR., W/ REDUCED KNOBS

6482578 5251 System Plates Bright Bluish Green 2025
©2025 LEGO Group
« Previous Next »
2 Bright Bluish Green Plates 5251 PLATE, 8X16X2/3, CIR., W/ REDUCED KNOBS 3 2025 6 2025
6531173 <h1><a href='/parts/6531173/plate-8x16x2-3-cir-w-reduced-knobs'>PLATE, 8X16X2/3, CIR., W/ REDUCED KNOBS</a></h1><div class='tags floatleft'><a href='/parts/6531173/plate-8x16x2-3-cir-w-reduced-knobs'>6531173</a> <a href='/parts/design-5251'>5251</a> <a href='/parts/platform-System'>System</a> <a href='/parts/category-Plates'>Plates</a> <a href='/parts/colour-Earth-Blue'>Earth Blue</a> <a href='/parts/year-2025'>2025</a></div><div class='floatright'>©2025 LEGO Group</div>

PLATE, 8X16X2/3, CIR., W/ REDUCED KNOBS

6531173 5251 System Plates Earth Blue 2025
©2025 LEGO Group
« Previous Next »
1 Earth Blue Plates 5251 PLATE, 8X16X2/3, CIR., W/ REDUCED KNOBS 3 2025 6 2025
6482584 <h1><a href='/parts/6482584/wheel-dia-43'>WHEEL, DIA. 43</a></h1><div class='tags floatleft'><a href='/parts/6482584/wheel-dia-43'>6482584</a> <a href='/parts/design-107865'>107865</a> <a href='/parts/platform-Technic'>Technic</a> <a href='/parts/category-Vehicles-Transportation'>Vehicles & Transportation</a> <a href='/parts/colour-Vibrant-Coral'>Vibrant Coral</a> <a href='/parts/year-2025'>2025</a></div><div class='floatright'>©2025 LEGO Group</div>

WHEEL, DIA. 43

6482584 107865 Technic Vehicles & Transportation Vibrant Coral 2025
©2025 LEGO Group
« Previous Next »
2 Vibrant Coral Vehicles & Transportation 107865 WHEEL, DIA. 43 3 2025 3 2025