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.

MyBot Expansion Kit

Checking

2946 MyBot Expansion Kit

15 pieces in 14 part and color combinations.

LEGO counts 14 pieces. This inventory comes from a separate parts catalog and lists 15; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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 8 pieces

  • Duplo Figure, Early, Cap Red, Black Legs, Red Utility Harness, Sunglasses Print (Action Wheeler) Black Part 76399pr0008 Element 4141905 ×1
  • Duplo Hose with Yellow Nozzle and Stud Holder Black Part 6425c03 Element 642530 ×1
  • Duplo Toolo Brick 2 x 2 with Angled Bracket with Forks and 2 Screws Black Part 6284c01 Element 4142376 ×1
  • Duplo Toolo Brick 2 x 4 with Holes on Sides and Top and 1 Screw in Top Black Part 31184c01 Element 4142166 or 4141849 ×1
  • Duplo Toolo Cockpit 4 x 6 Black Part 31196c01 Element 4142179 ×1
  • Duplo Toolo Engine Block Black Part 31382c01 Element 4169936 ×1
  • Duplo Toolo MyBot Engine Program Brick with Yellow Airplane with Propellers Print Black Part 31425c08pr0001 Element 4153655 ×1
  • Duplo Toolo MyBot Engine Program Brick with Yellow Screwdriver Print Black Part 31425c07pr0001 Element 4153658 ×1

Chrome Silver 3 pieces

  • Duplo Toolo Hydro Nozzle Chrome Silver Part 6363 Element 4153633 ×1
  • Duplo Toolo Propeller Small with Yellow Center Screw Chrome Silver Part 6669c01 Element 4193715 ×2

Red 3 pieces

  • Duplo Panel 1 x 2 x 1 2/3 Sloped with 3 Embossed Gauges Red Part 6428 Element 642821 ×1
  • Duplo Toolo Brick 2 x 4 with Holes on Sides and Top and 1 Screw in Top Red Part 31184c01 Element 6182720 or 4538976 ×1
  • Duplo Toolo Wings Red Part 31238 Element 4162474 or 4142034 ×1

Trans-Red 1 piece

  • Duplo Toolo Tool Screwdriver Trans-Red Part 74864 Element 4142821 or 4141972 ×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.