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.

Cement Truck

Checking

42233-4 Cement Truck

38 pieces in 22 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.

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Piece checklist

Yellow 10 pieces

  • Cone 3 x 3 x 2 Yellow Part 6233 Element 6581918 or 4639063 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×1
  • Technic Axle and Pin Connector Perpendicular Yellow Part 6536 Element 6261367 or 4173666 ×1
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×1
  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×1
  • Technic Beam 3 x 5 L-Shape Thick with Alternating Holes Yellow Part 2477 Element 6546795 ×2
  • Technic Beam Special 1 x 3 Thin with Trapezoid Frame Yellow Part 7944 Element 6579942 ×1
  • Technic Pin Connector Round 1L [Beam] Yellow Part 18654 Element 6431481 1 spare in the box ×2

Light Bluish Gray 6 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×4

White 6 pieces

  • Technic Axle Pin 3L without Friction Ridges and 2L Axle White Part 65249 Element 6289797 ×2
  • Technic Pin 1/2 without Friction Ridges White Part 4274 Element 6552190 or 6388018 1 spare in the box ×4

Black 5 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×1
  • Tyre 17.5 x 6 with Shallow Staggered Treads and Middle Band Black Part 92409 Element 4617848 ×4

Dark Bluish Gray 4 pieces

  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×1
  • Technic Worm Gear Short Dark Bluish Gray Part 27938 Element 6170153 ×1
  • Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×2

Blue 3 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×1

Flat Silver 2 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Flat Silver Part 65304 Element 6287673 ×2

Tan 1 piece

  • Technic Pin Long without Friction Ridges, with Anti-Roll Notch Tan Part 39888 Element 6321305 ×1

[No Color/Any Color] 1 piece

  • Activity Card for Set 42233-4 [No Color/Any Color] Part 6591892 Element 6591892 ×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.