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LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Baby Discovery Set

Checking

9017 Baby Discovery Set

51 pieces in 32 part and color combinations.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Show

Piece checklist

Red 13 pieces

  • Primo Brick 1 x 1 Red Part 31000 Element 4223135 or 4142219 ×1
  • Primo Brick 1 x 1 with Pink Circles Print Red Part 31000pr0028 Element 4155061 ×2
  • Primo Brick 1 x 1 with Pink and White Rings Print Red Part 31000pr0011 Element 4155054 ×3
  • Primo Brick 1 x 1 with Round Rattle, Bird and Arrows Print Red Part 31005pr0004 ×1
  • Primo Brick 1 x 1 with Round Rattle, Ladybug / Ladybird Print Red Part 31005pr0001 Element 4214737 or 4214726 ×1
  • Primo Brick, Star 1 x 1 Red Part 44591 Element 4182290 ×2
  • Primo Figure Girl with Green Base, Daisy Print, Brown Hair Red Part 76080c01pr0001 Element 4261189 or 4261187 ×2
  • Primo Stacking Base Round Wavy Large, One Top Stud, Rattle with Yellow Base Red Part 31011c01 Element 4155546 or 4142261 ×1

Yellow 10 pieces

  • Primo Brick 1 x 1 with Orange Dots Print Yellow Part 31000pr0010 Element 4155058 ×2
  • Primo Brick 1 x 1 with Orange and White Rings Print Yellow Part 31000pr0009 Element 4155064 ×3
  • Primo Brick 1 x 1 with Round Rattle, Bee Print Yellow Part 31005pr0002 Element 4214719 or 4158397 ×1
  • Primo Brick, Triangle 1 x 1 Yellow Part 44592 Element 4182293 ×3
  • Primo Plate 3 x 3 Yellow Part 31012 Element 4165463 ×1

Bright Green 9 pieces

  • Primo Brick 1 x 1 Bright Green Part 31000 Element 4157962 ×3
  • Primo Brick 1 x 1 with Light Yellow and Light Green Rings Print Bright Green Part 31000pr0012 ×3
  • Primo Brick 1 x 1 x 2 with Rattle, Mirror Print (Sticker) Bright Green Part 31004pr0001 Element 4209185 or 4154508 ×1
  • Primo Stacking Base Round Wavy Small, One Top Stud Bright Green Part 31136 Element 4155501 or 4154843 ×1
  • Primo Wheel Base 1 x 2 with Hitches and Red Wheels Bright Green Part 31605c02 Element 4155283 or 4155281 ×1

Blue 8 pieces

  • Primo Brick 1 x 1 with Orange Dots Print Blue Part 31000pr0010 Element 4154835 ×2
  • Primo Brick 1 x 1 with Round Rattle, Smiling Face, and White Spots Print Blue Part 31005pr0007 Element 4158388 ×1
  • Primo Brick, Oval 1 x 1 Blue Part 44589 Element 4182292 ×3
  • Primo Stacking Base Round Wavy Medium, One Top Stud Blue Part 31137 Element 4157959 or 4142258 ×1
  • Primo Train Engine 1 x 2 with Red Wheels, Yellow Button, and Face Print Blue Part 31155c02 Element 4157819 ×1

Medium Blue 4 pieces

  • Primo Airplane, Red Propeller, Blue Wheels, with Eyes, Wing Logo Print Medium Blue Part 31639c01pr0002 Element 4200505 ×1
  • Primo Stacking Head, Bear Medium Blue Part 41021 Element 4154845 ×1
  • Primo Wheel Base 1 x 2 with Hitches and Red Wheels Medium Blue Part 31605c02 Element 4155282 or 4155280 ×2

Green 3 pieces

  • Primo Brick 1 x 1 with Round Rattle, Frog Print Green Part 31005pr0006 Element 4214732 or 4214724 ×1
  • Primo Figure Boy with Red Base, Red Suspenders Print, Brown Hair Green Part 75595c02pr0002 Element 4261490 or 4261179 ×2

Lime 1 piece

  • Primo Figure Boy with Blue Base, Blue Dungarees Print, Green Cap Lime Part 76081pr0005 Element 4261182 ×1

Medium Bluish Violet 1 piece

  • Primo Shape Sorter, Bucket Lid Medium Bluish Violet Part 44657 Element 4183418 ×1

Medium Lime 1 piece

  • Primo Stacking Base Round Wavy Smallest, One Top Stud Medium Lime Part 31135 Element 4154842 ×1

White 1 piece

  • Primo Figure Boy with Red Base, Red Dungarees Print, Green Cap White Part 76081pr0006 Element 4261183 ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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