The Workshop Sheet 10 of 21

LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

Building Set D: Aircraft

Checking

1915 Building Set D: Aircraft

20 pieces in 10 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 8 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×2
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×4
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2

Blue 7 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×1
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×2

Black 3 pieces

  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×1
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×2

Yellow 2 pieces

  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×2

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.