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.

Basic Building Set

Checking

2385 Basic Building Set

80 pieces in 26 part and color combinations.

LEGO counts 71 pieces. This inventory comes from a separate parts catalog and lists 80; 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

Yellow 24 pieces

  • Duplo Brick 1 x 2 x 2 with Three Books Print, ABC and 123 Yellow Part 4066pr0118 ×1
  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×10
  • Duplo Brick 2 x 2 x 2 Curved Top Yellow Part 3664 Element 6023350 or 366424 ×1
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×5
  • Duplo Brick 2 x 8 Yellow Part 4199 Element 4291883 or 419924 ×1
  • Duplo Car Base 2 x 6 with Fake Bolts, Open Hitch End and Red Wheels Yellow Part 11248c02 Element 6086771 ×1
  • Duplo Door / Window Frame Flat Front Surface Yellow Part 4253 ×3
  • Duplo Door / Window with Four Panes Yellow Part 4809 Element 480924 ×1
  • Duplo Door / Window with Porthole Yellow Part 4248 Element 424824 ×1

Red 21 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Long Swept Hair Fabuland Brown, Eyelashes Print Red Part dupfig0011pr0003 ×1
  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×9
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×5
  • Duplo Car Base 2 x 6 with Fake Bolts, Open Hitch End and Yellow Wheels Red Part 11248c01 Element 6335178 or 6045958 ×1
  • Duplo Door / Window Red Part 4247 Element 424721 ×2
  • Duplo Door / Window Frame Flat Front Surface Red Part 4253 ×2
  • Duplo Door / Window with Porthole Red Part 4248 Element 4143624 or 424821 ×1

Blue 17 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Neat Hair Black, Wide Smile Print Blue Part dupfig0013pr0002 ×1
  • Duplo 2 x 2 x 2 Figure Brick Early, Short Spiky Hair Red, Nose Freckles Print Blue Part dupfig0009pr0002 ×1
  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×9
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×5
  • Duplo Brick 2 x 6 x 2 with Curved Ends Blue Part 4197 Element 4161148 or 419723 ×1

Green 17 pieces

  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×9
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×5
  • Duplo Brick 2 x 4 x 2 Rounded Ends Green Part 4198 Element 4198456 or 644828 ×1
  • Duplo Brick 2 x 6 x 2 with Curved Ends Green Part 4197 Element 419728 ×2

Black 1 piece

  • Duplo 2 x 2 x 2 Figure Brick Early, Dog, White Head, Looking Right Print Black Part dupfig0001pr0002 ×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.