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.

Wrecking Ball Crane

Checking

42233-5 Wrecking Ball Crane

41 pieces in 24 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 Beams 11 pieces

  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 ×4
  • Technic Beam 1 x 2 Thin Yellow Part 41677 Element 6431477 ×4
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Yellow Part 11478 Element 6371968 ×2
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Yellow Part 32348 Element 6278131 or 4500485 ×1

Technic Bushes 9 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×2
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×6

Technic Axles 7 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×3

Technic Connectors 3 pieces

  • Technic Axle and Pin Connector Perpendicular Dark Bluish Gray Part 6536 Element 6536199 or 6261374 ×1
  • Technic Pin Connector Hub with 2 Axles Dark Bluish Gray Part 27940 Element 6167281 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Yellow Part 42003 Element 6273711 or 4200324 ×1

Technic Beams Special 2 pieces

  • Technic Beam Special 1 x 3 Thin with Trapezoid Frame Yellow Part 7944 Element 6579942 ×2

Technic Gears 2 pieces

  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×1
  • Technic Gear 20 Tooth Bevel Tan Part 32198 Element 6031962 or 4514557 ×1

Technic Pins 2 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2

Bars, Ladders and Fences 1 piece

  • Bar 2L with Stop in Center Dark Bluish Gray Part 78258 Element 6350724 1 spare in the box ×1

Gear Parts 1 piece

  • Activity Card for Set 42233-5 [No Color/Any Color] Part 6591893 Element 6591893 ×1

String, Bands and Reels 1 piece

  • Chain 6L [5 Links] Flat Silver Part 92338 Element 6323689 or 6064049 ×1

Technic Special 1 piece

  • Technic Ball Joint Light Bluish Gray Part 32474 Element 6070731 or 4585707 ×1

Tiles Round and Curved 1 piece

  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 1 spare in the box ×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.