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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.

Open Freight Wagon (White Box)

Checking

4186870 Open Freight Wagon (White Box)

121 pieces in 26 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.

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Piece checklist

Bricks Round and Cones 36 pieces

  • Brick Round 2 x 2 with Axle Hole Brown Part 3941 Element 614325 ×36

Bricks Special 24 pieces

  • Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×4
  • Brick Special 1 x 2 with Grille Blue Part 2877 Element 6289241 or 4279392 ×10
  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] Blue Part 30237a ×10

Bars, Ladders and Fences 14 pieces

  • Bar 6.6L with Stop Ring [Umbrella Stand] Black Part 4095 Element 409526 ×10
  • Plate Special 1 x 6 with Train Wagon End Fence Dark Gray Part 6583 Element 4109788 or 658327 ×2
  • Bar 1 x 4 x 2 Light Gray Part 6187 Element 4113844 or 618702 ×2

Plates 14 pieces

  • Plate 1 x 10 Black Part 4477 Element 447726 ×2
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate 2 x 8 Dark Gray Part 3034 Element 303427 ×2

Transportation - Land 7 pieces

  • Train Buffer Beam Black Part 4022 Element 4109853 or 402276 ×2
  • Vehicle Base, Train 6 x 24 with Two 1 x 2 Cutouts and 3 Round Holes Each End Black Part 6584 Element 4159942 or 658476 ×1
  • Wheel Holder, Train with Wheels [Complete Assembly] Black Part 2878c01 Element 4207401 or 74784 ×4

Tiles Special 6 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×4
  • Tile Special 6 x 4 with Beveled Edges and 5mm Pin (Train Bogie Plate) Black Part 4025 Element 6096842 or 6051914 ×2

Bricks Sloped 4 pieces

  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Black Part 4460a ×4

Magnets and Holders 4 pieces

  • Magnet Cylindrical Black Part 73092 Element 73092 ×2
  • Train Coupling New Black Part 2920 Element 4299239 or 292076 ×2

Plates Special 4 pieces

  • Plate Special 1 x 2 with Ladder Black Part 4175 Element 6285241 or 6179557 ×4

Bricks 2 pieces

  • Brick 1 x 6 Blue Part 3009 Element 300923 ×2

Panels 2 pieces

  • Panel 1 x 4 x 3 [Hollow Studs] Black Part 4215b Element 4105207 ×2

String, Bands and Reels 2 pieces

  • Chain 17L [21 Links] Light Gray Part 30104 Element 4113265 ×2

Tiles 2 pieces

  • Tile 1 x 2 with Partial White Stripes Print Black Part 3069bpr0027 Element 4143171 ×2

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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