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.

Maxi Building Bucket

Checking

2390 Maxi Building Bucket

29 pieces in 16 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.

Show

Piece checklist

Red 9 pieces

  • Duplo Brick 1 x 2 x 2 with Book with 'ABC' on Front and Pencil Print Red Part 4066pr0077 Element 4143220 or 82442 ×1
  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×3
  • Duplo Brick 2 x 3 x 2 with Curve Red Part 2301 Element 230121 ×2
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×2
  • Duplo Car Base 2 x 6 with Yellow Wheels and Open Hitch End Red Part 2312c01 Element 6006223 or 4592299 ×1

Green 7 pieces

  • Duplo 2 x 2 x 2 Figure Brick, Rounded Bangs, Dark Orange Hair, Collar, Hearts Print Green Part 2327c02pr0002 ×1
  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×3
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×2
  • Duplo Door / Window Green Part 4247 Element 424728 ×1

Yellow 7 pieces

  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×3
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×2
  • Duplo Brick 2 x 8 Yellow Part 4199 Element 4291883 or 419924 ×1
  • Duplo Door / Window Frame with Raised Door Outline Yellow Part 2332 Element 233224 ×1

Blue 6 pieces

  • Duplo 2 x 2 x 2 Figure Brick, Spiky Bangs, Light Gray Hair, Yellow and Gray Argyle Sweater, Mustache Print Blue Part 2327c01pr0006 ×1
  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×3
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×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.