BlockTalk Find Your Set

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.

Train and Station

Checking

523 Train and Station

51 pieces in 27 part and color combinations.

LEGO counts 46 pieces. This inventory comes from a separate parts catalog and lists 51; 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

Blue 23 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Bowler Hat Black Blue Part dupfig0007pr0002 ×1
  • Duplo 2 x 2 x 2 Figure Brick Early, Short Spiky Hair Brown, Cheek Freckles Print Blue Part dupfig0009pr0004 ×1
  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×8
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×2
  • Duplo Brick 2 x 4 with 'STATION' Text Print Blue Part 3011pr0013 ×1
  • Duplo Brick Arch Half 2 x 3 x 3 Blue Part dupupn0127 ×2
  • Duplo Car Base 2 x 6 with Red Wheels and Old Style Closed Hitch End Blue Part 4883c02 ×3
  • Duplo Door / Window Frame Flat Front Surface without Clips Blue Part dupupn0048 ×1
  • Duplo Door 1 x 4 x 1 Blue Part dupupn0118 ×2
  • Duplo Door Frame 2 x 4 x 3 for Half Door Blue Part dupupn0181 ×2

Yellow 13 pieces

  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×4
  • Duplo Brick 2 x 2 x 2 Curved Top Yellow Part 3664 Element 6023350 or 366424 ×3
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×4
  • Duplo Door 1 x 4 x 1 with Red 'POST-MAIL' Print Yellow Part dupupn0118pr0002 ×1
  • Duplo Door Frame 2 x 4 x 3 for Half Door Yellow Part dupupn0181 ×1

Red 8 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Long Swept Hair Black, Eyelashes, Looking Straight Print Red Part dupfig0011pr0004 ×1
  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×3
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×1
  • Duplo Door / Window with Four Windows Narrow Red Part dupupn0119 ×1
  • Duplo Door 1 x 4 x 1 with Yellow 'EXPRESS' Print Red Part dupupn0118pr0001 ×1
  • Duplo Door Frame 2 x 4 x 3 for Half Door Red Part dupupn0181 ×1

Green 6 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Straight Hair Yellow, Nose Freckles Print Green Part dupfig0012pr0002 ×1
  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×2
  • Duplo Brick 2 x 2 with Yellow '523' Antique Style Print Green Part 3437pr0063 ×1
  • Duplo Brick 2 x 2 x 2 Curved Top Green Part 3664 ×1
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×1

Black 1 piece

  • Duplo 2 x 2 x 2 Figure Brick Early, Police Hat Blue, Moustache Print Black Part dupfig0002pr0003 ×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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy