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.

Summer Day Out

Checking

3121 Summer Day Out

22 pieces in 15 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

Belville, Scala and Fabuland 8 pieces

  • Scala, Baby Dungarees with Rainbow Top Blue Part 40566 Element 4144393 ×1
  • Scala, Container / Basket, Wicker Light Turquoise Part 33081 Element 4124298 ×1
  • Scala, Container / Bucket / Basket Handle Light Turquoise Part 33082 Element 4125467 or 4124439 ×1
  • Belville / Scala, Animal, Teddy Bear - Arms Up Medium Dark Pink Part 6186 Element 4155747 ×1
  • Belville / Scala, Equipment Baby Bottle / Water Bottle White Part 6206 Element 4499698 or 620601 ×1
  • Scala, Animal, Dog (Domino) Dalmatian with Black Ears White Part 40606 ×1
  • Scala, Blanket with Starburst Print Yellow Part 40567 Element 4144394 ×1
  • Scala, Equipment, Baby Pram / Stroller Yellow Part 33075 Element 4144402 ×1

Wheels and Tyres 8 pieces

  • Wheel 8 x 6 Red Part 4624 Element 4114781 ×4
  • Tyre 14 x 4 Smooth Small Single White Part 3139 Element 4114780 ×4

Minifig Accessories 2 pieces

  • Equipment Dish / Plate / Bowl 3 x 3 [Plain] Blue Part 6256 Element 4618631 or 625623 ×1
  • Equipment Umbrella Top with No Bottom Flaps, 6 x 6 with Top Stud Red Part 4094b Element 6483104 or 6145260 ×1

Plates Special 2 pieces

  • Plate Special 1 x 4 with Wheels Holder Red Part 2926 Element 292621 ×2

Bars, Ladders and Fences 1 piece

  • Bar 6.6L with Stop Ring [Umbrella Stand] White Part 4095 Element 4294998 or 409551 ×1

Non-Buildable Figures (Duplo, Fabuland, etc) 1 piece

  • Scala Baby with Small Blue Eyes Print (Thomas) Nougat Part scafig0013pr0002 ×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.