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.

Mindstorms EV3 Replacement Pack 5

Checking

2000704 Mindstorms EV3 Replacement Pack 5

24 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

Black 4 pieces

  • Wheel Skateboard / Trolley Black Part 2496 Element 6223673 or 4569104 ×4

Dark Bluish Gray 4 pieces

  • Rock Boulder 4 x 4, Bottom Dark Bluish Gray Part 30294 Element 4506779 ×2
  • Rock Boulder 4 x 4, Top Dark Bluish Gray Part 30293 Element 4506778 ×2

Light Bluish Gray 4 pieces

  • Wheel Holder, Plate, Round 2 x 2 Thin with Clips Light Bluish Gray Part 2655 Element 6152344 or 4211373 ×4

Blue 2 pieces

  • Technic Rubber Belt Medium [26mm ID] [Round Cross Section] Blue Part 85545 Element 6049730 or 4544147 ×2

Pearl Gold 2 pieces

  • Rock 1 x 1 Crystal 5 Point Pearl Gold Part 30385 Element 6174085 or 4516816 ×2

Red 2 pieces

  • Tile Round 2 x 2 with Bottom Stud Holder Red Part 14769 Element 6066342 ×2

Trans-Medium Blue 2 pieces

  • Rock 1 x 1 Crystal 5 Point Trans-Medium Blue Part 30385 Element 6254245 or 4243703 ×2

White 2 pieces

  • Tile Round 2 x 2 with Bottom Stud Holder White Part 14769 Element 6601846 or 6044691 ×2

Yellow 2 pieces

  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×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.