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.

TECHNIC Motor

Checking

10077 TECHNIC Motor

55 pieces in 9 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

Technic Steering, Suspension and Engine 29 pieces

  • Technic Engine Crankshaft Center Black Part 2854 Element 4171912 or 4107064 ×3
  • Technic Engine Piston Round Blue Part 2851 Element 4182882 or 4161902 ×8
  • Technic Engine Connecting Rod Light Gray Part 2852 Element 285202 ×8
  • Technic Engine Crankshaft Light Gray Part 2853 Element 4119475 or 285302 ×2
  • Technic Engine Cylinder with Side Slots Trans-Clear Part 2850a Element 4109610 ×8

Technic Pins 20 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×20

Technic Axles 4 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 1 spare in the box ×3
  • Technic Axle 3 Light Gray Part 4519 Element 4186007 ×1

Technic Bricks 2 pieces

  • Technic Pin Connector Block 1 x 5 x 3 Black Part 32333 Element 6271358 or 4141810 ×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.