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

Checking

323 Train

253 pieces in 38 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 89 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick 1 x 2 without Bottom Tube Red Part 3065 ×29
  • Brick 1 x 6 without Bottom Tubes, with 2 Raised Cross Supports Red Part 3009a ×2
  • Brick 1 x 8 without Bottom Tubes with Cross Side Supports Red Part 3008a ×4
  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×2
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×1
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×10
  • Brick Round 1 x 1 Solid Stud Red Part 3062a ×1
  • Brick Sloped 45° 2 x 2 Double Convex Red Part 3045 Element 4163087 or 304521 ×2
  • Brick Sloped 45° 2 x 4 Red Part 3037 Element 303721 ×2
  • Plate 1 x 1 Red Part 3024 Element 302421 ×12
  • Plate 1 x 2 [Old Style Bottom] Red Part 3023a ×6
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Wheel Old with 4 Studs Red Part 7039 Element 7039 ×12

Light Gray 61 pieces

  • Plate 1 x 2 [Old Style Bottom] Light Gray Part 3023a ×2
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×9
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×38
  • Tyre Smooth Old Style - Small Light Gray Part 132a ×12

Blue 34 pieces

  • Brick Sloped 45° 2 x 1 Triple with Hollow Underside Blue Part 3048a ×2
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×4
  • Plate 1 x 2 [Old Style Bottom] Blue Part 3023a ×8
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×3
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×8
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×9

Trans-Clear 28 pieces

  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×16
  • Brick 2 x 3 without Cross Supports Trans-Clear Part 3002a ×10
  • Plate 1 x 2 [Old Style Bottom] Trans-Clear Part 3023a ×2

Black 25 pieces

  • Brick 1 x 2 without Bottom Tube Black Part 3065 ×8
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×2
  • Brick 2 x 3 without Cross Supports Black Part 3002a ×5
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×6
  • Plate 1 x 2 [Old Style Bottom] Black Part 3023a ×4

White 15 pieces

  • Brick Special 2 x 4 with Wheel Holder Old, Opaque Bottom White Part 7049a ×6
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 4 x 8 White Part 3035 Element 6609533 or 303501 ×6

Milky White 1 piece

  • Hinge Coupling, Two Connected 2 x 2 Plates [Nylon] Milky White Part 650 ×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.

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