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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.

Mobile Crane and Wagon

Checking

134 Mobile Crane and Wagon

55 pieces in 21 part and color combinations.

LEGO counts 86 pieces. This inventory comes from a separate parts catalog and lists 55; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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

Bricks 24 pieces

  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×2
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×6
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×4
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×6

Plates 9 pieces

  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×2
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×3
  • Plate 2 x 8 Red Part 3034 Element 303421 ×1
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 4 x 10 Yellow Part 3030 Element 4200024 or 4142103 ×1

Transportation - Land 8 pieces

  • Train Buffer Single Black Part 3488 ×8

Plates Special 4 pieces

  • Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×4

Hinges, Arms and Turntables 3 pieces

  • Turntable 4 x 4 - Old Type Complete - Faceted Black Part 3404ac01 ×1
  • Hinge Plate 2 x 9 with Hole Close to Hinge [Complete Assembly] Red Part 3324ac01 ×2

Magnets and Holders 2 pieces

  • Train Base 6 x 12 Type 1 with Wheels and Magnets [Complete Assembly] Black Part 270c02 ×2

String, Bands and Reels 2 pieces

  • String Cord Thin (0.5mm) [Undetermined Length] Black Part 56823 Element 7009426 ×1
  • String Reel Winch 4 x 4 x 2 with Metal Handle, Red Drum Yellow Part 586c01 ×1

Bricks Round and Cones 1 piece

  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×1

Supports, Girders and Cranes 1 piece

  • Hook, Plate 1 x 2 with Crane Hook Left Red Part 3127 Element 4120019 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 2 x 4 x 1 2/3 Trans-Clear Part 21 ×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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