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.

Fun and Adventure

Checking

4023 Fun and Adventure

55 pieces in 26 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

Blue 18 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Blue Part 3747b Element 4509443 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×2
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×2
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×6

White 14 pieces

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2
  • Brick Sloped 33° 3 x 2 White Part 3298 Element 329801 ×1
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×2
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×3
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2

Red 10 pieces

  • Brick 1 x 6 Red Part 3009 Element 300921 ×2
  • Brick Sloped 33° 3 x 1 Red Part 4286 Element 428621 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×4

Yellow 5 pieces

  • Brick Round 1 x 1 Open Stud Yellow Part 3062b Element 306844 or 306224 ×4
  • Brick Special 1 x 2 with Pin Yellow Part 2458 Element 245824 ×1

Black 3 pieces

  • Juniors Midifig, Max, Black Torso, Light Gray Arms, Blue Legs Black Part 76519pr0003 ×1
  • Propeller 3 Blade 3 Diameter with Axle Cross Black Part 6041 Element 604126 ×1
  • Wheel Skateboard / Trolley Black Part 2496 Element 6223673 or 4569104 ×1

Light Gray 3 pieces

  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Light Gray Part 2444 Element 244402 ×1
  • Tile Special 2 x 2 with Top Pin Light Gray Part 2460 Element 246002 ×1
  • Wheel Holder, Plate, Round 2 x 2 Thin with Clips Light Gray Part 2655 Element 265502 ×1

Trans-Brown 1 piece

  • Windscreen 3 x 4 x 1 1/3 with 2 Studs on Top Trans-Brown Part 2437 Element 6507913 or 6253360 ×1

Trans-Green 1 piece

  • Dish 2 x 2 Inverted [Radar] Trans-Green Part 4740 Element 6076601 or 4179430 ×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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