The Workshop Sheet 10 of 19

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.

Pulse

Checking

4575 Pulse

8 pieces in 7 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

Black 2 pieces

  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×2

Purple 2 pieces

  • Launcher, Vehicle Racer Purple Part 30556 Element 4154946 ×1
  • Vehicle Base 4 x 6 Racer Base with Yellow Wheels Purple Part 30558c09 Element 4155121 ×1

Violet 2 pieces

  • Brick Curved 2 x 2 with Lip, No Studs with Printed Circuitry Print (Pulse) Violet Part 30602pr0032 Element 4154990 ×1
  • Brick Sloped 2 x 2 No Studs with Angled Side Block Extensions and Pulse Print Violet Part 30601pr0007 Element 4154955 ×1

Yellow 1 piece

  • Racer Driver Head, Brick Special 2 x 2 Square, Green Eyes, White Mouth, Monocle (Pulse) Yellow Part 30599pr0005 Element 4154951 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 4575-1 [No Color/Any Color] Part 41099 Element 4155213 ×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.