The Workshop Sheet 10 of 22

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.

Pneumatic Rubber Bands and Pneumatic Tubing

Checking

9870 Pneumatic Rubber Bands and Pneumatic Tubing

144 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

String, Bands and Reels 130 pieces

  • Rubber Band 15mm [Square Cross Section] Black Part 23229 Element 4141604 ×30
  • Rubber Band Large [Square Cross Section] Black Part 70158 ×30
  • Rubber Band Medium (Square Cross Section) Black Part 71156 Element 71156 ×30
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×40

Pneumatics 8 pieces

  • Pneumatic T-Piece (T Bar) [Old Style] Light Gray Part 4697a ×8

Tubes and Hoses 6 pieces

  • Hose, Pneumatic 4mm D. Black Part 5102 ×4
  • Hose, Pneumatic 4mm D. Light Gray Part 5102 ×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.