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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.

Special Elements for Control Lab Set

Checking

970098 Special Elements for Control Lab Set

122 pieces in 64 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

Bricks 29 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×4
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Blue Part 2454a Element 245423 ×2
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×2
  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick 1 x 16 Red Part 2465 Element 6378410 or 246521 ×1
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 1 x 8 Red Part 3008 Element 300821 ×2
  • Brick 2 x 2 Corner Red Part 2357 Element 235771 or 235721 ×2
  • Brick 1 x 2 without Bottom Tube Trans-Dark Blue Part 3065 Element 6514264 or 6244906 ×1
  • Brick 1 x 2 without Bottom Tube Trans-Green Part 3065 Element 6514266 or 6244908 ×1
  • Brick 1 x 2 without Bottom Tube Trans-Red Part 3065 Element 6514263 or 6244905 ×1
  • Brick 1 x 2 without Bottom Tube Trans-Yellow Part 3065 Element 6514265 or 6244907 ×1
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Yellow Part 2454a Element 245424 ×2
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×2

Tiles 24 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×2
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×2
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×2
  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×2
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×2
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×2
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2
  • Tile 2 x 2 with Black Wide Arrow Print White Part 3068bpr0050 Element 80607 ×1
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×2
  • Tile 2 x 2 with Ice Cream Cone Print White Part 3068bpr0087 Element 81770 ×1
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×2
  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×2

Plates 16 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 1 x 8 Black Part 3460 Element 346026 ×2
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2

String, Bands and Reels 8 pieces

  • Rubber Band Medium (Square Cross Section) Black Part 71156 Element 71156 ×4
  • Technic Rubber Belt Medium [26mm ID] [Round Cross Section] Blue Part 85545 Element 6049730 or 4544147 ×2
  • Technic Rubber Belt Medium [24mm ID] [Round Cross Section] Red Part 85544 Element 4544145 or 4544143 ×2

Wheels and Tyres 8 pieces

  • Tyre 14 x 4 Smooth Small Single Black Part 3139 Element 313926 ×1
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×2
  • Wheel with Split Axle hole Light Gray Part 3482 Element 348202 ×2
  • Wheel Centre Small with Stub Axles (Pulley Wheel) Trans-Clear Part 3464 ×1
  • Wheel with Split Axle hole Yellow Part 3482 Element 348224 ×2

Bricks Sloped 7 pieces

  • Brick Sloped 33° 2 x 4 Double Black Part 3299 Element 4529155 or 329926 ×1
  • Brick Sloped 33° 3 x 1 Red Part 4286 Element 428621 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Red Part 4287a ×2

Plates Special 6 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×2
  • Plate Special 2 x 2 with 2 Pin Holes Red Part 2817 Element 281721 ×2

Panels 4 pieces

  • Panel 6 x 6 x 9 Corner Convex with Curved Top Trans-Clear Part 6002 Element 6343724 or 6225039 ×2
  • Panel 6 x 6 x 9 Curved Top Trans-Clear Part 2572 Element 6201906 or 4522224 ×2

Technic Gears 4 pieces

  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×3
  • Technic Turntable Large Type 1, 56 Tooth [Complete Assembly] Light Gray Part 2856c01 Element 74643 ×1

Plates Round Curved and Dishes 3 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Dish 2 x 2 x 2/3 Light Reflector Chrome Silver Part 71128 Element 71128 ×1

Bricks Special 2 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2

Hinges, Arms and Turntables 2 pieces

  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×1
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1

Technic Beams 2 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×2

Technic Special 2 pieces

  • Technic Plate 1 x 5 with Toothed Ends, 2 Studs and Center Axle Hole Black Part 2711 Element 4279391 or 4195722 ×2

Tiles Round and Curved 2 pieces

  • Tile Round 2 x 2 with Bottom Cross White Part 4150 Element 415051 or 415001 ×2

Transportation - Sea and Air 2 pieces

  • Propeller 2 Blade 9 Diameter Light Gray Part 2952 Element 4107163 ×2

Transportation - Land 1 piece

  • Wheel Holder 2 x 2 Thin with Clips, Plane Single Light Gray Part 2415 Element 241502 ×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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