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.

Push Along Play Train

Checking

170 Push Along Play Train

87 pieces in 25 part and color combinations.

LEGO counts 93 pieces. This inventory comes from a separate parts catalog and lists 87; 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 39 pieces

  • Brick Sloped 45° 2 x 1 without Bottom Pin Red Part 3040a ×2
  • Fence Gate 1 x 4 x 2 Red Part 3186 ×6
  • Fence Gate 1 x 4 x 2 Base Red Part 3187 ×6
  • Fence Lattice 1 x 4 x 2 Red Part 3185 Element 318521 ×7
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×4
  • Plate 2 x 4 Red Part 3020 Element 302021 ×4
  • Plate 4 x 6 Red Part 3032 Element 303221 ×1
  • Plate 6 x 14 Red Part 3456 Element 4179193 or 345621 ×1
  • Window 1 x 1 x 1 Classic with Short Sill, No Glass Red Part 3087c ×2
  • Window 1 x 1 x 2, Short Lip [no Glass] Red Part 29 ×2

Yellow 26 pieces

  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×8
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×4
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×2
  • Brick 2 x 3 without Cross Supports Yellow Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Yellow Part 3001a ×5
  • Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside Yellow Part 3307 Element 330724 ×4
  • Brick Round 1 x 1 Solid Stud Yellow Part 3062a ×1

Blue 19 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×6
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×5
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×5
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×1
  • Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside Blue Part 3307 Element 330723 ×2

Black 3 pieces

  • Train Base 6 x 12 Type 1 with Wheels and Magnets [Complete Assembly] Black Part 270c02 ×3

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.