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.

Bob's Busy Day

Checking

3284 Bob's Busy Day

10 pieces in 9 part and color combinations.

LEGO counts 9 pieces. This inventory comes from a separate parts catalog and lists 10; 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

Dark Orange 3 pieces

  • Duplo Brick 1 x 2 x 2 with Wood Grain Print Dark Orange Part 4066pr0146 Element 4157782 ×2
  • Duplo Brick 2 x 2 Dark Orange Part 3437 Element 4583791 or 4158534 ×1

Green 2 pieces

  • Duplo Brick 1 x 2 x 2 with Hammer and Saw Print Green Part 4066pr0129 Element 4155952 ×1
  • Duplo Brick 1 x 2 x 2 with Lunch Box Print Green Part 4066pr0150 Element 4143722 ×1

Yellow 2 pieces

  • Duplo Chair with 4 Studs and Squared Back Yellow Part 6478 Element 647824 ×1
  • Duplo Figure, Early, Hard Hat Yellow, Medium Blue Legs, Yellow Top, Light Blue Overalls and Toolbelt Print (Bob The Builder) Yellow Part 74506pr0042 Element 4157101 ×1

Bright Green 1 piece

  • Duplo Plate 4 x 4 with 2 x 2 x 2 Dome Top and Cross Cut Slots Bright Green Part 42058 Element 4162967 ×1

Dark Gray 1 piece

  • Duplo Ladder 8 Rung Dark Gray Part 2224 Element 4157732 ×1

[No Color/Any Color] 1 piece

  • Duplo Backdrop, Shed Exterior / Shed Interior with Tool-bench Print [No Color/Any Color] Part 42699pr0002 ×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.