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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.

Universal Building Set

Checking

112 Universal Building Set

200 pieces in 59 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Bricks 113 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×4
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×8
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×2
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Blue Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Blue Part 3001a ×10
  • Brick 10 x 20 with Bottom Tubes in single row around edge, with dual '+' Cross Supports Green Part 700c ×1
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Red Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×10
  • Brick 2 x 8 Red Part 3007 Element 6036408 or 300721 ×2
  • Brick 2 x 2 without Inside Ridges Trans-Clear Part 3003a Also in White ×2
  • Brick 2 x 4 without Cross Supports Trans-Clear Part 3001a Also in White ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×4
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×4
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×2
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×2
  • Brick 2 x 2 without Inside Ridges White Part 3003a Also in Trans-Clear ×4
  • Brick 2 x 3 without Cross Supports White Part 3002a ×2
  • Brick 2 x 4 without Cross Supports White Part 3001a Also in Trans-Clear ×10
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×4
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×2
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Yellow Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Yellow Part 3001a ×10

Bricks Sloped 25 pieces

  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×4
  • Brick Sloped 33° 2 x 4 Double Red Part 3299 Element 329921 ×2
  • Brick Sloped 33° 3 x 2 Red Part 3298 Element 329821 ×5
  • Brick Sloped 33° 3 x 4 Red Part 3297 Element 329721 ×10

Windows and Doors 15 pieces

  • Door 1 x 3 x 4 with Glass Blue Part 7930 ×2
  • Window 1 x 2 x 2 Shutter Blue Part 3582 Element 358223 ×6
  • Door Frame 1 x 3 x 4 Red Part 3579 ×2
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Red Part 3081c01 Element 7026 ×3
  • Window 1 x 4 x 2 Classic with Short Sill [Complete] Red Part 453cc01 ×2

Hinges, Arms and Turntables 14 pieces

  • Arm Holder Brick 2 x 2 with Hole and 2 Arms Black Part 792c03 ×1
  • Arm Piece Straight with 2 and 3 Fingers Black Part 3612 Element 610126 ×2
  • Arm Piece with Towball Socket, 3 Fingers Black Part 3613 ×2
  • Arm Holder Brick 2 x 2 with Hole and 2 Arms Blue Part 792c03 ×1
  • Arm Piece Straight with 2 and 3 Fingers Blue Part 3612 Element 610123 ×2
  • Arm Piece with Towball Socket, 3 Fingers Blue Part 3613 ×2
  • Plate Round 1 x 1 with Towball and Round Hole [Maxifig Hand] Yellow Part 3614a ×4

Wheels and Tyres 12 pieces

  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×4
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×8

Bricks Special 6 pieces

  • Brick Special 1 x 1 x 2 with Shutter Holder Red Part 3581 Element 4207299 or 358121 ×6

Plates 6 pieces

  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate 4 x 8 Blue Part 3035 Element 303523 ×1
  • Plate 6 x 10 Red Part 3033 Element 6509008 or 6249097 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×2

Minifig Headwear 3 pieces

  • Homemaker Hair Long Black Part upn0223 ×1
  • Homemaker Hair Short Brown Part upn0225 ×1
  • Homemaker Hair Bun Light Gray Part upn0226 ×1

Bricks Curved 2 pieces

  • Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside White Part 3307 Element 330701 ×2

Minifig Heads 2 pieces

  • Homemaker Figure Head with Eyes, Eyebrows and Smile Print Yellow Part 685pr0004 ×1
  • Homemaker Figure Head with Eyes, Glasses and Smile Print Yellow Part 685pr0002 ×1

Plants & Trees 2 pieces

  • Plant, Pine Tree, Large, 4 x 4 x 6 2/3 Green Part 3471 Element 6248463 or 347128 ×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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