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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.

Demolition Site

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10734 Demolition Site

163 pieces in 80 part and color combinations, plus 3 minifigures.

The official piece count includes the 12 parts inside the set's minifigures, which this inventory lists separately. 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.

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Piece checklist

Bricks 33 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×1
  • Brick 1 x 4 Black Part 3010 Element 301026 ×1
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×1
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick 2 x 6 Dark Red Part 2456 Element 6089268 or 4496339 ×3
  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×6
  • Brick 2 x 2 Medium Nougat Part 3003 Element 6058085 or 4645062 ×7
  • Brick 2 x 4 Tan Part 3001 Element 4114319 or 300105 ×7
  • Brick 1 x 3 Yellow Part 3622 Element 362224 ×2
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×3
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×1

Tiles 29 pieces

  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×3
  • Tile 1 x 4 with Train Controls Print Dark Bluish Gray Part 2431pr0028 Element 6020825 or 4215740 ×1
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×6
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×6
  • Tile 1 x 2 with Groove Trans-Red Part 3069b Element 6514220 or 6251290 ×2
  • Tile 1 x 2 with Groove Trans-Yellow Part 3069b Element 6514221 or 6251291 ×2
  • Tile 1 x 4 with Red and White Danger Stripes Red Print White Part 2431pr0077 Element 6102861 or 81266 ×5
  • Tile 2 x 4 with Warning Sign and Helmet Mandatory Sign Print White Part 87079pr0113 Element 6175893 ×1
  • Tile 2 x 4 with Car Grill Print Yellow Part 87079pr0102 Element 6175960 ×1

Wheels and Tyres 16 pieces

  • Tyre 24 x 14 Shallow Tread (Tread Small Hub), Band Around Center of Tread Black Part 89201 Element 6132299 or 4639695 ×4
  • Tyre 30.4 x 14 Offset Tread [Centre Band] Black Part 92402 Element 4619323 ×4
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Light Bluish Gray Part 55981 Element 6109684 or 4299119 ×4
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Yellow Part 55981 Element 6109681 or 4490142 ×4

Hinges, Arms and Turntables 12 pieces

  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Black Part 30396 Element 4144567 or 4143351 ×2
  • Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [X Opening] Black Part 30389c Element 4163904 or 4162759 ×1
  • Hinge Plate 2 x 2 Locking with 1 Finger on Top Black Part 92582 Element 6265730 or 4613759 ×1
  • Hinge Brick 2 x 4 Locking with 1 Finger on Top at One End Light Bluish Gray Part 18455 Element 6447577 or 6097167 ×3
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30386 Element 4140704 ×2
  • Hinge Brick 1 x 6 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30388 Element 4218725 or 4144579 ×3

Bricks Sloped 11 pieces

  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×3
  • Brick Sloped 30° 1 x 2 x 2/3 with 2 Gauges/Dials Print Dark Bluish Gray Part 85984pr0143 Element 6134910 ×1
  • Brick Sloped 45° 2 x 2 with Aircraft Multiple Flight Controls Print White Part 3039pr0013 Element 6032098 or 6016723 ×1
  • Brick Sloped 18° 4 x 1 Yellow Part 60477 Element 4656699 or 4515361 ×4
  • Brick Sloped 65° 2 x 1 x 2 Yellow Part 60481 Element 6441088 or 6013498 ×2

Transportation - Land 9 pieces

  • Construction Vehicle Bucket 3 x 6, 7 Hinge Teeth Black Part 21709 Element 6117932 ×1
  • Roll Cage 6 x 4 x 3 1/3 Black Part 64450 Element 6240526 or 4539385 ×1
  • Vehicle Base, Brick Special 4 x 10 with 4 Pins Black Part 30076 Element 6352696 or 6023257 ×1
  • Vehicle Base 8 x 16 with Wheel Arches, Front and Side Studs, and 4 x 14 Recessed Studded Section, 3 Holes, Dark Bluish Gray Wheel Clip Pins Dark Bluish Gray Part 18937c01 Element 6524435 or 6097135 ×1
  • Seat / Chair 2 x 2 with Center Sprue Mark Red Part 4079b Element 407921 ×2
  • Seat / Chair 2 x 2 with Center Sprue Mark Reddish Brown Part 4079b ×1
  • Steering Stand 1 x 2 with Black Steering Wheel White Part 3829c01 Element 4208543 or 9551 ×1
  • Tipper Bed 12 x 8 x 5 with Same Colored Hinge Plate Yellow Part 19001 Element 6440712 or 6173088 ×1

Bricks Round and Cones 8 pieces

  • Brick Round 4 x 4 Centre Hole Dark Bluish Gray Part 87081 Element 4558959 ×1
  • Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×7

Bricks Special 7 pieces

  • Brick Special 2 x 4, with 2 x 2 Brick with Top Pin and 1 x 2 Side Plates Light Bluish Gray Part 30592 Element 6301425 or 6278504 ×1
  • Brick Special 1 x 2 with Masonry Brick Profile Medium Nougat Part 98283 Element 4656783 ×3
  • Brick Special 1 x 2 with 2 Studs on 1 Side Red Part 11211 Element 6019155 ×1
  • Brick Special 1 x 4 with 4 Studs on One Side Red Part 30414 Element 4177991 or 4157223 ×1
  • Brick Special 1 x 2 with Handle White Part 30236 Element 4140626 ×1

Plates 6 pieces

  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate 6 x 6 Dark Bluish Gray Part 3958 Element 4211134 ×1
  • Plate 4 x 6 Lime Part 3032 Element 6060848 or 4291524 ×1
  • Plate 6 x 6 Reddish Brown Part 3958 Element 4217848 ×1

Plates Special 6 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 1 x 2, Top Clip [Split] Light Bluish Gray Part 92280 Element 4598526 ×2
  • Plate Special 2 x 6 x 2/3 with 4 Studs on Side, 1 Support Wall on Bottom Yellow Part 87609 Element 4567996 ×1

Tiles Special 5 pieces

  • Tile Special Round 2 x 2 - Thick Lifting Ring Black Part 74698 Element 6010831 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×1
  • Tile Special 1 x 2 with Handle Light Bluish Gray Part 2432 Element 4211357 ×1
  • Tile Special 1 x 2 with Handle Yellow Part 2432 Element 243224 ×2

Supports, Girders and Cranes 4 pieces

  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×2
  • Support 1 x 6 x 5 Girder Rectangular Yellow Part 64448 Element 6057479 or 4539435 ×2

Windows and Doors 4 pieces

  • Door Frame 1 x 4 x 6 Type 2 Black Part 60596 Element 6337273 or 4535834 ×1
  • Door 1 x 4 x 6 with 4 Panes and Stud Handle Green Part 60623 Element 4583718 ×1
  • Glass for Window 1 x 4 x 3 [Opening] Trans-Light Blue Part 60603 Element 6514143 or 6253735 ×2

Bricks Curved 3 pieces

  • Brick Curved 2 x 4 Double, No Studs, with Groove Yellow Part 6192b Element 6271225 or 6174100 ×2
  • Brick Curved 4 x 1 Double, No Studs Yellow Part 93273 Element 4613151 ×1

Bars, Ladders and Fences 2 pieces

  • Bar 1 x 4 x 2 with Studs Light Bluish Gray Part 4083 Element 6528577 or 6133587 ×1
  • Bar 7 x 3 with Double Clips (Ladder) [Straight Clips] Light Bluish Gray Part 6020 Element 4275673 ×1

Minifig Accessories 2 pieces

  • Equipment Radio [Extended Handle, Expanded Speaker Grille] Black Part 19220 Element 6170545 or 6100054 ×1
  • Equipment Shovel [Rounded Handle End] Dark Bluish Gray Part 3837 Element 4211006 ×1

Panels 2 pieces

  • Panel 1 x 6 x 6 with Window Tan Part 15627 Element 6057031 ×2

Rock 2 pieces

  • Rock Boulder 4 x 4, Bottom Dark Bluish Gray Part 30294 Element 4506779 ×1
  • Rock Boulder 4 x 4, Top Dark Bluish Gray Part 30293 Element 4506778 ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Tool Hammer / Mallet Large Black Part 4522 Element 452226 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 2 x 6 x 2, Wide Top Trans-Clear Part 4176 Element 4502193 or 4179426 ×1

Minifigures 3 figures

  • Worker, Blue Torso, Blue Legs, Red Helmet, Beard Minifigure, checked as a whole figure ×1
  • Worker, Orange Overalls over Blue Sweater, Red Hard Hat Minifigure, checked as a whole figure ×1
  • Worker, Orange Overalls over Blue Sweater, Red Hard Hat (3626c Head) Minifigure, checked as a whole figure ×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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