BlockTalk Find Your Set

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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.

Caboose (White Box)

Checking

4186874 Caboose (White Box)

170 pieces in 52 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

Plates 27 pieces

  • Plate 6 x 16 Black Part 3027 Element 302726 ×1
  • Plate 2 x 2 Brown Part 3022 Element 4109983 ×1
  • Plate 2 x 3 Dark Gray Part 3021 Element 4108041 or 302127 ×2
  • Plate 2 x 4 Dark Gray Part 3020 Element 4112232 or 302027 ×2
  • Plate 2 x 8 Dark Gray Part 3034 Element 303427 ×1
  • Plate 1 x 10 Red Part 4477 Element 447721 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×5
  • Plate 1 x 6 Red Part 3666 Element 366621 ×5
  • Plate 4 x 6 Red Part 3032 Element 303221 ×1
  • Plate 1 x 10 Yellow Part 4477 Element 6079138 or 6078095 ×2
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×1

Windows and Doors 27 pieces

  • Window 1 x 2 x 2 Plane, Solid Studs Black Part 2377 Element 237726 ×13
  • Door 1 x 4 x 5 with 4 Panes, Squared Base Red Part 3861b Element 386121 ×1
  • Glass for Window 1 x 2 x 2 Plane Trans-Light Blue Part 4862 Element 486242 ×13

Bricks Special 26 pieces

  • Brick Special 1 x 1 with Headlight Dark Gray Part 4070 Element 4108044 or 407027 ×4
  • Brick Special 1 x 1 with Handle Red Part 2921 Element 6170565 or 292121 ×10
  • Brick Special 1 x 2 with Grille Red Part 2877 Element 6219677 or 287721 ×10
  • Brick Special 1 x 2 with Handle Red Part 30236 Element 4113204 ×2

Bricks 23 pieces

  • Brick 2 x 6 Black Part 2456 Element 4181144 or 245626 ×1
  • Brick 1 x 2 Dark Gray Part 3004 Element 4113909 or 300427 ×1
  • Brick 2 x 2 Corner Dark Gray Part 2357 Element 4114511 or 235727 ×1
  • Brick 1 x 1 Red Part 3005 Element 300521 ×12
  • Brick 1 x 12 Red Part 6112 Element 611221 ×2
  • Brick 1 x 3 Red Part 3622 Element 362221 ×2
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 1 x 6 Red Part 3009 Element 300921 ×2

Plates Special 13 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×1
  • Plate Special 1 x 2 with Door Rail Black Part 32028 Element 4107761 ×4
  • Plate Special 1 x 2 with Ladder Black Part 4175 Element 6285241 or 6179557 ×2
  • Plate Special 1 x 8 with Door Rail Black Part 4510 Element 4286009 or 451026 ×4
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Red Part 2436 Element 4282742 or 243621 ×2

Tiles Special 12 pieces

  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×8
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×4

Plates Round Curved and Dishes 11 pieces

  • Plate Round 1 x 1 with Solid Stud Dark Gray Part 6141 Element 4124087 or 614127 1 spare in the box ×4
  • Plate Round 1 x 1 with Solid Stud Light Gray Part 6141 Element 614102 1 spare in the box ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×3

Bricks Round and Cones 8 pieces

  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×4
  • Brick Round 1 x 1 Open Stud Light Gray Part 3062b Element 306202 ×4

Bars, Ladders and Fences 6 pieces

  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 ×3
  • Bar 7 x 3 with Double Clips (Ladder) [Straight Clips] Black Part 6020 Element 602026 ×1
  • Plate Special 1 x 6 with Train Wagon End Fence Black Part 6583 Element 6271649 or 658326 ×2

Bricks Sloped 5 pieces

  • Brick Sloped 33° 3 x 4 Black Part 3297 Element 6435854 or 329726 ×2
  • Brick Sloped 45° 6 x 4 Double [aka Train Roof] Black Part 32083 Element 6299684 or 4116792 ×3

Transportation - Land 5 pieces

  • Train Buffer Beam Black Part 4022 Element 4109853 or 402276 ×2
  • Wheel Holder, Train with Wheels [Complete Assembly] Black Part 2878c01 Element 4207401 or 74784 ×2
  • Seat / Chair 2 x 2 Brown Part 4079 Element 407925 ×1

Magnets and Holders 4 pieces

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

Tiles 2 pieces

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

Minifig Accessories 1 piece

  • Equipment Saucepan Black Part 4529 Element 452926 ×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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