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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 Trial Size

Checking

4157 Freestyle Trial Size

32 pieces in 15 part and color combinations, plus 1 minifigure.

LEGO counts 33 pieces. This inventory comes from a separate parts catalog and lists 36, 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

Red 9 pieces

  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×1
  • Brick Wedged, Angled 3 x 2 Left Red Part 6565 Element 6256588 or 4527765 ×1
  • Brick Wedged, Angled 3 x 2 Right Red Part 6564 Element 6256585 or 4526929 ×1
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×3
  • Plate 2 x 4 Red Part 3020 Element 302021 ×3

Yellow 9 pieces

  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×4
  • Brick 2 x 2 with Eye with White Print on Two Sides, Offset Yellow Part 3003pr0053 Element 81910 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Yellow Part 3747a ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×2

Blue 8 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick Sloped 33° 3 x 2 Blue Part 3298 Element 6294307 or 6141996 ×4

White 4 pieces

  • Antenna 1 x 4 with Rounded Top White Part 3957a ×1
  • Plant, Flower - Small White Part 3742 1 spare in the box ×3

Green 1 piece

  • Plant, Flower Stem Green Part 3741 Element 6277589 or 374128 1 spare in the box ×1

Trans-Clear 1 piece

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

Minifigures 1 figure

  • White Torso, Black Legs, Red Hat 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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