BlockTalk Find Your Set

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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.

Freestyle Building Set

Checking

4150 Freestyle Building Set

87 pieces in 41 part and color combinations, plus 1 minifigure.

LEGO counts 88 pieces. This inventory comes from a separate parts catalog and lists 91, including the 4 parts inside the minifigures; 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.

Show

Piece checklist

Bricks 49 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×2
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 1 x 6 Red Part 3009 Element 300921 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×4
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×6
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×2
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×1
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 1 with Simple Eye Black and White Print Yellow Part 3005pr9996 Element 82357 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×6
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×1
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×4
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×1
  • Brick 2 x 6 Yellow Part 2456 Element 4181143 or 245624 ×1

Bricks Sloped 14 pieces

  • Brick Sloped 33° 2 x 2 Double Yellow Part 3300 Element 330024 ×1
  • Brick Sloped 33° 2 x 4 Double Yellow Part 3299 Element 6334233 or 329924 ×1
  • Brick Sloped 33° 3 x 2 Yellow Part 3298 Element 329824 ×2
  • Brick Sloped 33° 3 x 4 Yellow Part 3297 Element 6256980 or 6088712 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Yellow Part 3040b Element 4121965 or 304024 ×4
  • Brick Sloped 45° 2 x 2 Yellow Part 3039 Element 303924 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×2

Plants & Trees 6 pieces

  • Plant, Flower - Small Blue Part 3742 1 spare in the box ×3
  • Plant, Flower Stem Green Part 3741 Element 6277589 or 374128 ×1
  • Plant, Leaves 4 x 3 Green Part 2423 Element 6268814 or 242328 ×2

Plates 6 pieces

  • Plate 2 x 6 Blue Part 3795 Element 379523 ×2
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×1
  • Plate 4 x 6 Blue Part 3032 Element 303223 ×1
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2

Bricks Curved 4 pieces

  • Brick Curved 2 x 3 Red Part 6215 Element 621521 ×4

Hinges, Arms and Turntables 2 pieces

  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1
  • Turntable 2 x 2 Plate, Base Yellow Part 3680 Element 4667211 or 4597261 ×1

Plates Wedged 2 pieces

  • Wedge Plate 3 x 3 Cut Corner Red Part 2450 Element 245021 ×2

Windows and Doors 2 pieces

  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Red Part 3081c01 Element 7026 ×2

Bars, Ladders and Fences 1 piece

  • Antenna 1 x 4 with Rounded Top Yellow Part 3957a Element 4497183 or 395724 ×1

Flags, Banners and Signs 1 piece

  • Flag 4 x 1 Wavy [First Wave Left] Red Part 4495a ×1

Minifigures 1 figure

  • Blue Torso, Light Grey Legs, Black Hair Minifigure, checked as a whole figure ×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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