Free tool

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.

DNA Student Set

Checking

9744 DNA Student Set

525 pieces in 24 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

Black 146 pieces

  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Magnet Cylindrical Black Part 73092 Element 73092 ×72
  • Magnet Holder Tile 2 x 2 - Tall Arms with Deep Notch Black Part 2609b Element 4502266 or 4163970 ×72

Light Bluish Gray 127 pieces

  • Plate Special 2 x 4 with Pins Light Bluish Gray Part 30157 Element 4211572 ×48
  • Technic Pin Connector Round [No Slot] Light Bluish Gray Part 75535 Element 4212355 ×76
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×3

Blue 57 pieces

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×18
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×3
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×36

Green 57 pieces

  • Brick 2 x 4 Green Part 3001 Element 4106356 or 300128 ×3
  • Plate 2 x 2 Green Part 3022 Element 302228 ×18
  • Tile 1 x 2 with Groove Green Part 3069b Element 306928 ×36

Yellow 54 pieces

  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×18
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×36

Red 37 pieces

  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×12
  • Storage Bin, Dacta, Small Red Part upn0032 ×1
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×24

Orange 24 pieces

  • Brick Special 2 x 4 with Pins Orange Part 6249 Element 4168885 ×24

Brown 18 pieces

  • Plate 2 x 2 Brown Part 3022 Element 4109983 ×6
  • Tile 1 x 2 with Groove Brown Part 3069b Element 306925 ×12

Trans-Clear 2 pieces

  • Storage / Sorting Tray, Dacta, 13 Compartment for Dacta Small Bin Trans-Clear Part 167915 ×1
  • Storage Bin Lid, Dacta, 19 x 24 Trans-Clear Part 71082 ×1

White 2 pieces

  • Brick Special 2 x 2 with 2 Pins and Axle Hole White Part 30000 Element 6356180 or 6035762 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 9744-1 [No Color/Any Color] Part stickerupn0114 ×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.