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.

Train

Checking

40250 Train

56 pieces in 28 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.

Show

Piece checklist

Red 22 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick Curved 2 x 2 x 2/3 Red Part 15068 Element 6105976 ×4
  • Brick Round 2 x 2 Dome Top, Hollow Stud Red Part 30367c Element 4216657 ×1
  • Brick Sloped 45° 2 x 2 Double Convex Red Part 3045 Element 4163087 or 304521 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×1
  • Plate 4 x 6 Red Part 3032 Element 303221 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×1
  • Tile Special Round 2 x 2 with Hole Red Part 15535 Element 6102138 ×6
  • Window 1 x 2 x 2 Flat Front Red Part 60592 Element 6382696 or 4521438 ×3

Black 19 pieces

  • Bracket 1 x 2 - 2 x 4 Black Part 93274 Element 6118829 or 4616245 ×1
  • Brick 1 x 1 Black Part 3005 Element 300526 ×2
  • Brick Curved 1 x 4 x 1 1/3 No Studs Black Part 10314 Element 6019726 or 619126 ×2
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×7
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×1
  • Plate Special 2 x 2 with Towball and Hole Black Part 15456 Element 6448318 or 6359224 ×1
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×2

Tan 7 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×7

Light Bluish Gray 4 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Light Bluish Gray Part 99780 Element 6004990 ×1
  • Brick 2 x 3 Light Bluish Gray Part 3002 Element 4211386 ×1
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×1

White 3 pieces

  • Food Ice Cream Scoops White Part 6254 Element 6458475 or 625401 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) White Part 18674 Element 6615555 or 6093053 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1

Dark Bluish Gray 1 piece

  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Bluish Gray Part 15573 Element 6092572 ×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.