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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.

Crazy Action Contraptions (Klutz) Vol. 2

Checking

5005632 Crazy Action Contraptions (Klutz) Vol. 2

112 pieces in 33 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

Light Bluish Gray 43 pieces

  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×8
  • Technic Axle and Pin Connector Angled #1 Light Bluish Gray Part 32013 Element 6296859 or 4211550 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Light Bluish Gray Part 32034 Element 6346487 or 4211567 ×1
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 ×10
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 ×3
  • Technic Gear 40 Tooth Light Bluish Gray Part 3649 Element 6195314 or 4285634 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×10
  • Technic Plate 2 x 4 [3 Holes] Light Bluish Gray Part 3709 Element 4211444 ×2
  • Technic Plate 2 x 6 [5 Holes] Light Bluish Gray Part 32001 Element 4211542 ×2
  • Technic Plate 2 x 8 [7 Holes] Light Bluish Gray Part 3738 Element 4211449 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Light Bluish Gray Part 4185 Element 6321743 or 4494222 ×2

Black 30 pieces

  • Rubber Band Large [Square Cross Section] Black Part 70158 ×3
  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×2
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×3
  • Technic Axle 6 Black Part 3706 Element 370626 ×4
  • Technic Axle 8 Black Part 3707 Element 370726 ×3
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-Reduced Black Part 33299b Element 4563044 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×10
  • Technic Rubber Belt Medium [26mm ID] [Round Cross Section] Black Part 85545 ×2

Dark Bluish Gray 13 pieces

  • Technic Brick 1 x 12 [11 Pin Holes] Dark Bluish Gray Part 3895 Element 4210963 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Dark Bluish Gray Part 3701 Element 4213607 or 370127 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Dark Bluish Gray Part 3894 Element 4210917 or 3894199 ×2
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×2
  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×3

Red 12 pieces

  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×6
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 ×6

Tan 7 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×6
  • Technic Pin Long without Friction Ridges Tan Part 32556 ×1

White 7 pieces

  • Technic Brick 1 x 10 [9 Pin Holes] White Part 2730 Element 273001 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×3
  • Technic Steering Pulley Large White Part 3736 Element 4542733 or 4160689 ×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.

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