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.

Pneumatic Circuit

Checking

9776 Pneumatic Circuit

4 pieces in 4 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

Pneumatics 3 pieces

  • Pneumatic Switch with Top Studs Light Gray Part 75215 Element 4190775 or 75215 ×1
  • Pneumatic Cylinder with 2 Inlets Medium (48mm) with Black Top Yellow Part 2793c01 Element 4190836 or 74721 ×1
  • Pneumatic Pump New Style with Black Top Yellow Part 2797c02 Element 4563134 or 74720 ×1

Tubes and Hoses 1 piece

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