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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.

Siege Cart

Checking

6012 Siege Cart

44 pieces in 24 part and color combinations, plus 2 minifigures.

The official piece count includes the 10 parts inside the set's minifigures, which this inventory lists separately. 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

Black 26 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×4
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Black Part 4287a ×2
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×1
  • Plate 1 x 1 Black Part 3024 Element 302426 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thin Open O Clip] Black Part 4085a ×3
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×2

Brown 6 pieces

  • Weapon Bow and Arrow [Large] Brown Part 4499 Element 449925 ×1
  • Weapon Pike / Spear Round End Brown Part 4497 ×3
  • Wheel Wagon Large (33mm D.), Round Hole For Wheel Holder Pin Brown Part 4489a ×2

Light Gray 6 pieces

  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×2
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×1
  • Shield Triangular with Blue Lion, and Yellow Background Print Light Gray Part 3846pr0039 Element 4163363 ×1

White 3 pieces

  • Cone 1 x 1 [No Top Groove] White Part 4589 Element 458901 ×3

Yellow 3 pieces

  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×2

Minifigures 2 figures

  • Knight (Crusader Lion) - Light Gray Legs, Plastic Cape Minifigure, checked as a whole figure ×1
  • Archer (Crusader Lion) - Light Gray Legs Minifigure, checked as a whole figure ×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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