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.

Windmill Set

Checking

318 Windmill Set

153 pieces in 33 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

Bricks 71 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×2
  • Brick 1 x 2 without Bottom Tube Blue Part 3065 ×5
  • Brick 1 x 6 without Bottom Tubes, with 2 Raised Cross Supports Blue Part 3009a ×1
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×3
  • Brick 2 x 4 without Cross Supports Blue Part 3001a ×3
  • Brick 1 x 1 Red Part 3005 Element 300521 ×4
  • Brick 1 x 2 without Bottom Tube Red Part 3065 ×8
  • Brick 1 x 6 without Bottom Tubes, with 2 Raised Cross Supports Red Part 3009a ×5
  • Brick 1 x 8 without Bottom Tubes with Cross Side Supports Red Part 3008a ×6
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Red Part 3002a ×19
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×8
  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×3

Plates 38 pieces

  • Plate 1 x 2 [Old Style Bottom] Blue Part 3023a ×1
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×4
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×4
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×8
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×13
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×4
  • Plate 4 x 8 White Part 3035 Element 6609533 or 303501 ×1
  • Plate 6 x 8 White Part 3036 Element 303651 or 303601 ×1

Bricks Sloped 22 pieces

  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×8
  • Brick Sloped 45° 2 x 4 Blue Part 3037 Element 4107437 or 303723 ×12
  • Brick Sloped 45° 2 x 4 Double Blue Part 3041 Element 4240172 or 304123 ×2

Windows and Doors 20 pieces

  • Door 1 x 2 x 3 Left with Hollow Studs, Fixed Glass White Part 32bc01 ×3
  • Window 1 x 1 x 2, Extended Lip, Hollow Stud [with Glass] White Part 29bc01 ×12
  • Window 1 x 2 x 1, Extended Lip, Hollow Stud [with Glass] White Part 27bc01 ×2
  • Window 1 x 2 x 2 Classic, Extended Lip, Hollow Studs [with Glass] White Part 3081bc01 ×2
  • Window 1 x 6 x 2 with Shutters [Old Style Extended Lip & Glass] White Part 646bc01 ×1

Wheels and Tyres 2 pieces

  • Wheel Old with 4 Studs without inner Side Supports (Old Lego Logo) Red Part 7039d ×1
  • Brick Special 2 x 4 with Wheel Holder Old, Opaque Bottom White Part 7049a ×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.