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.

Basic Building Set Trial Size

Checking

1522 Basic Building Set Trial Size

44 pieces in 22 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 17 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate 2 x 8 Red Part 3034 Element 303421 ×2
  • Plate Special 2 x 2 with Helicopter Tail Rotor Holder Red Part 3481 ×1

Blue 11 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Blue Part 3040b Element 4121936 or 304023 ×2
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×2

Black 7 pieces

  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×2
  • Propeller 2 Blade Black Part 3480 ×1
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4

Yellow 5 pieces

  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×2
  • Brick 1 x 2 with Red / Black Three-Dot Face Print Yellow Part 3004pr9973 Element 4226108 or 81053 ×1

Trans-Clear 4 pieces

  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×2
  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 ×2

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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