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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.

Interactive Adventure Train

Checking

10427 Interactive Adventure Train

57 pieces in 37 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.

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Piece checklist

Light Bluish Gray 14 pieces

  • Duplo Brick 2 x 2 Light Bluish Gray Part 3437 Element 4583794 or 4266228 ×1
  • Duplo Train Track 4 x 8 Curved [Short] Light Bluish Gray Part 6378 Element 6207493 ×12
  • Duplo Train Track 4 x 8 Straight Light Bluish Gray Part 6377 Element 6207494 ×1

White 10 pieces

  • Duplo Animal Dog, Pug with Dark Brown Spots, Black Nose Print White Part 65161pr0002 Element 6568807 or 6342862 ×1
  • Duplo Brick 1 x 2 x 2 with Bottom Tube White Part 76371 Element 6101121 ×4
  • Duplo Brick 1 x 2 x 2 with Sun, Hat, and Sunscreen on Yellow Background, and Rain Cloud, Rain Boots, Raincoat on Blue Background Print White Part 76371pr0221 Element 6444512 ×1
  • Duplo Door / Window with Four Equal Square Cornered Panes White Part 90265 Element 4586178 ×1
  • Duplo Figure with Long Hair Parted on Left Bright Light Yellow, Bright Light Blue Legs, Lime Neckerchief Print White Part 65243pr0001 Element 6569837 or 6488901 ×1
  • Duplo Food, Two Cakes on Plate Lavender White Part 65188c03 Element 6489392 ×1
  • Duplo Plate 2 x 6 White Part 98233 Element 6059082 ×1

Bright Light Yellow 5 pieces

  • Duplo Animal Bird with White Chest and Coral Beak Print Bright Light Yellow Part 27370pr0018 Element 6386648 ×1
  • Duplo Brick 2 x 2 Bright Light Yellow Part 3437 Element 4648231 or 4261816 ×2
  • Duplo Door / Window Frame Flat Front Surface, Completely Open Back Bright Light Yellow Part 61649 Element 6294401 ×1
  • Duplo Figure Child with Hair and Cap Lime, Light Aqua Legs, Bright Light Yellow Shirt Print Bright Light Yellow Part 69711pr0004 Element 6488925 ×1

Lime 5 pieces

  • Duplo Brick 2 x 3 with Curved Top Lime Part 2302 Element 6020068 or 4221627 ×2
  • Duplo Brick 2 x 4 Curved Bottom Lime Part 98224 Element 6004979 ×1
  • Duplo Plant, Flower with 1 Top Stud Lime Part 6510 Element 6214736 ×1
  • Duplo Train Action Plate with White Tree Print Lime Part 35962pr0008 Element 6480165 ×1

Bright Green 4 pieces

  • Duplo Brick 2 x 3 with Curved Bottom Bright Green Part 98252 Element 6486218 ×2
  • Duplo Brick 2 x 4 Curved Top Bright Green Part 98223 Element 4648246 ×2

Reddish Orange 3 pieces

  • Duplo Brick 2 x 4 Curved Top Reddish Orange Part 98223 Element 6486217 ×1
  • Duplo Brick 3 x 2 x 2 Slope Reddish Orange Part 63871 Element 6465891 ×2

Yellowish Green 3 pieces

  • Duplo Plate Round 4 x 4 Yellowish Green Part 98222 Element 6391038 ×1
  • Duplo Train Engine Cabin 4 x 8 x 3 1/2 with Dark Blue Train Logo, Heart, with People, 1, 2, 3, Notes, Stars Print Yellowish Green Part 107499pr0001 Element 6480168 ×1
  • Duplo Train Passenger Cabin 4 x 8 x 3 1/2 Yellowish Green Part 5206 Element 6485970 ×1

Coral 2 pieces

  • Duplo Plant, Flower with 1 Top Studs Coral Part 84195 Element 6393151 ×1
  • Duplo Train Action Plate with White House Print Coral Part 35962pr0010 Element 6480164 ×1

Dark Azure 2 pieces

  • Duplo Chair with no Back / Stool Dark Azure Part 65273 Element 6287568 ×2

Dark Blue 2 pieces

  • Duplo Train Base 4 x 8 with Light Bluish Gray Train Wheels and Yellow Moveable Hook (New Version) Dark Blue Part 104188 Element 6481141 ×1
  • Duplo Train Engine Base, Push & Go Motor with White Headlights Dark Blue Part 106704 Element 6471949 ×1

Tan 2 pieces

  • Duplo Tile 2 x 4 with Wood Grain Pattern Tan Part 65109 Element 6286369 ×1
  • Duplo Train Track, Straight with 4 x 8 Plate on Side Tan Part 35965 Element 6481125 ×1

Medium Azure 1 piece

  • Duplo Plate Round 4 x 4 Medium Azure Part 98222 Element 6306692 ×1

Medium Lavender 1 piece

  • Duplo Train Action Plate with White Star Print Medium Lavender Part 35962pr0009 Element 6480167 ×1

Medium Nougat 1 piece

  • Duplo Brick Round 2 x 2 x 2 Medium Nougat Part 98225 Element 6296138 ×1

Orange 1 piece

  • Duplo Suitcase / Bag Orange Part 20302 Element 6104418 ×1

Yellow 1 piece

  • Duplo Blanket 50 x 90 with Orange 1, 2, 3, Heart, Blue Heart, White Shapes Print Yellow Part 103670pr0004 Element 6481936 ×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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