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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.

Simple Machines Set

Checking

9689 Simple Machines Set

204 pieces in 54 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 41 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×2
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Light Bluish Gray Part 33299a Element 4211688 ×1
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 ×16
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Bluish Gray Part 3650c Element 4211434 ×2
  • 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 Wedge Belt Wheel [aka Pulley] Light Bluish Gray Part 4185 Element 6321743 or 4494222 ×4

Yellow 40 pieces

  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×4
  • Minifig Head, Black Eyebrows, Thin Grin, Eyes with White Pupils Print [Hollow Stud] Yellow Part 3626cpr0891 Element 4651441 ×2
  • Technic Axle Connector with Axle Hole Yellow Part 32039 Element 4107800 or 3203924 ×2
  • Technic Axle and Pin Connector Perpendicular Yellow Part 6536 Element 6261367 or 4173666 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Yellow Part 32064b ×4
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 ×16
  • Technic Pin Connector Round [Slotted] Yellow Part 62462 Element 6173122 or 4526983 ×2
  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×2
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×2
  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×4

Black 30 pieces

  • Brick Special 2 x 6 x 2 Weight with Bottom Openings and Center Seams on Ends Black Part 73090a ×1
  • String with End Studs 41L Overall Black Part 14226c41 Element 6096957 or 6074034 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×16
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×4

Red 30 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×2
  • Hips and Red Legs Red Part 970c22 Element 6006024 or 4582576 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Red Part 3703 Element 370321 ×6
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×4
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×4

White 29 pieces

  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×8
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×4
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×4
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×4
  • Technic Plate 2 x 4 [3 Holes] White Part 3709 Element 370901 ×2
  • Technic Plate 2 x 6 [5 Holes] White Part 32001 Element 6552133 or 4527947 ×6
  • Torso, T-Shirt with Classic Space Minifigure Print, Green Arms, Yellow Hands White Part 973c31h01pr4903 Element 6283920 ×1

Tan 10 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×10

Dark Bluish Gray 8 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×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 Dark Bluish Gray Part 3647 Element 4514559 ×4

Green 8 pieces

  • Plate 2 x 2 Green Part 3022 Element 302228 ×4
  • Plate 2 x 4 Green Part 3020 Element 302028 ×4

Orange 3 pieces

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1
  • Hat / Cap Short Curved Peak Orange Part 86035 Element 4583147 ×1
  • Torso, Halter Top with Medium Blue Trim and Flowers Print, Yellow Arms and Hands Orange Part 973c01h01pr1585 Element 6031022 or 4630787 ×1

Blue 2 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2

Dark Tan 2 pieces

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×2

Dark Brown 1 piece

  • Hair Ponytail Long French Braided Dark Brown Part 88286 Element 6560541 or 4581313 ×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.

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