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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

111 Universal Building Set

174 pieces in 53 part and color combinations.

LEGO counts 173 pieces. This inventory comes from a separate parts catalog and lists 174; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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

Red 42 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×6
  • 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 Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×4
  • Brick Special 1 x 1 x 2 with Shutter Holder Red Part 3581 Element 4207299 or 358121 ×4
  • Door Frame 1 x 3 x 4 Red Part 3579 ×1
  • Plate 6 x 10 Red Part 3033 Element 6509008 or 6249097 ×1
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Red Part 3081c01 Element 7026 ×2
  • Window 1 x 4 x 2 Classic with Short Sill [Complete] Red Part 453cc01 ×2

Blue 39 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick 1 x 8 with Bottom Tubes and 3 Lowered Cross Supports Blue Part 3008b ×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 Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×4
  • Door 1 x 3 x 4 with Glass Blue Part 7930 ×1
  • Homemaker Hat, Police Style Blue Part upn0247 ×1
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×2
  • Plate 4 x 8 Blue Part 3035 Element 303523 ×1
  • Window 1 x 2 x 2 Shutter Blue Part 3582 Element 358223 ×4

White 35 pieces

  • Arm Holder Brick 2 x 2 with Hole and 2 Arms White Part 792c03 ×1
  • Arm Piece Straight with 2 and 3 Fingers White Part 3612 Element 4174738 ×2
  • Arm Piece with Towball Socket, 3 Fingers White Part 3613 Element 4114147 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×4
  • Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support White Part 3010a ×2
  • Brick 1 x 8 with Bottom Tubes and 3 Lowered Cross Supports White Part 3008b ×2
  • Brick 2 x 2 without Inside Ridges White Part 3003a Also in Trans-Clear ×6
  • 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
  • Fence Lattice 1 x 4 x 2 White Part 3185 Element 6628214 or 4587272 ×4

Yellow 28 pieces

  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×4
  • Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports Yellow Part 3009b ×2
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Yellow Part 3002a ×4
  • Brick 2 x 4 without Cross Supports Yellow Part 3001a ×10
  • Homemaker Figure Head with Face Print Yellow Part 685pr0001 ×1
  • Plate 4 x 6 Yellow Part 3032 Element 303224 ×1
  • Plate Round 1 x 1 with Towball and Round Hole [Maxifig Hand] Yellow Part 3614a ×2

Black 24 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×6
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×8
  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×2
  • Homemaker Hair Long Black Part upn0223 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4

Trans-Clear 4 pieces

  • 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

Green 2 pieces

  • Brick 10 x 20 with Bottom Tubes in single row around edge, with dual '+' Cross Supports Green Part 700c ×1
  • Plant, Pine Tree, Large, 4 x 4 x 6 2/3 Green Part 3471 Element 6248463 or 347128 ×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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