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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.

Twin Spin Helicopter

Checking

31049 Twin Spin Helicopter

326 pieces in 121 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

Plates 55 pieces

  • Plate 1 x 12 Black Part 60479 Element 4514845 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×8
  • Plate 2 x 10 Black Part 3832 Element 383226 ×7
  • Plate 2 x 3 Black Part 3021 Element 302126 ×6
  • Plate 2 x 6 Black Part 3795 Element 379526 ×4
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×3
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×2
  • Plate 2 x 2 Corner Blue Part 2420 Element 242073 or 242023 ×2
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×1
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×1
  • Plate 1 x 4 Medium Blue Part 3710 Element 4179828 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×9
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×2
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×3
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2

Technic Special 34 pieces

  • Technic Link Tread with Beveled Edge Black Part 15379 Element 6047885 1 spare in the box ×32
  • Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Light Bluish Gray Part 32125 Element 4262978 or 4211842 ×2

Bricks Sloped 27 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Blue Part 54200 Element 4504380 or 4296154 1 spare in the box ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Blue Part 85984 Element 4651236 ×8
  • Brick Sloped 65° 2 x 2 x 2 with Bottom Tube Blue Part 3678b Element 4653712 or 4549797 ×2
  • Brick Sloped Inverted 45° 6 x 4 Double with 4 x 4 Recessed and 3 Holes Dark Bluish Gray Part 60219 Element 4549999 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Medium Blue Part 54200 Element 4565363 1 spare in the box ×2
  • Brick Sloped 45° 2 x 4 Medium Blue Part 3037 Element 6149568 ×2
  • Brick Sloped 65° 2 x 1 x 2 Medium Blue Part 60481 Element 6149563 or 4596065 ×4
  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 ×2
  • Brick Sloped Inverted 33° 3 x 1 with Internal Stopper and No Front Stud Connection White Part 4287c Element 6552111 or 428701 ×2
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed, 2 Holes White Part 72454 Element 4658973 ×2

Plates Special 22 pieces

  • Plate Special 1 x 4 with Wheels Holder Black Part 2926 Element 6338416 or 292626 ×2
  • Bracket 1 x 2 - 1 x 4 [Rounded Corners] Blue Part 10201 Element 6119159 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Blue Part 15573 Element 6092582 ×2
  • Technic Plate 2 x 4 [3 Holes] Blue Part 3709 Element 370923 ×7
  • Plate Special 1 x 2 with Pin Hole Underneath Light Bluish Gray Part 18677 Element 6168633 or 6089147 ×4
  • Plate Special 4 x 4 with 2 x 2 Opening Light Bluish Gray Part 64799 Element 4612621 ×1
  • Bracket 1 x 2 - 1 x 4 [Rounded Corners] Red Part 10201 Element 6089576 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Red Part 2540 Element 4140585 or 254021 ×1
  • Bracket 1 x 2 - 2 x 2 White Part 44728 Element 6619296 or 6117940 ×2

Technic Pins 18 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×3
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×6
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×5
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×4

Bricks 17 pieces

  • Brick 1 x 6 Dark Bluish Gray Part 3009 Element 4211100 ×2
  • Brick 2 x 6 Dark Bluish Gray Part 2456 Element 4282819 or 4210875 ×1
  • Brick 1 x 2 Medium Blue Part 3004 Element 4629786 or 4179833 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick 1 x 2 without Bottom Tube Trans-Brown Part 3065 Element 6514267 or 6244909 ×2
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×3
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×3
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×1

Plates Round Curved and Dishes 16 pieces

  • Plate Round Corner 3 x 3 Black Part 30357 Element 4227392 ×2
  • Plate Round Half 3 x 6 with 1 x 2 Cutout Black Part 18646 Element 6138405 ×1
  • Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 1 spare in the box ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] White Part 2654 Element 6601843 or 6552259 ×1

Tiles Special 16 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×6
  • Tile Special Round 2 x 2 - Thick Lifting Ring Black Part 74698 Element 6010831 ×1
  • Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Yellow Part 2412b Element 241224 ×7

Technic Axles 12 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×3
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 5 with Stop Dark Tan Part 15462 Element 6055631 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×1
  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×2
  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×1
  • Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×1

Technic Connectors 12 pieces

  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×2
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×1
  • Technic Pin Connector Hub with 1 Axle Light Bluish Gray Part 22961 Element 6123815 ×2
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×1
  • Technic Axle and Pin Connector Angled #3 - 157.5° White Part 32016 Element 6261390 or 6063767 ×2
  • Technic Axle Connector Smooth [with x Hole + Orientation] Yellow Part 59443 Element 4519010 ×4

Bricks Wedged 11 pieces

  • Brick Wedged, Sloped 4 x 2 Triple Left Blue Part 43710 Element 4622180 or 4180410 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Right Blue Part 43711 Element 4622179 or 4180420 ×1
  • Brick Wedged, Sloped 45° 2 x 2 Corner Blue Part 13548 Element 6035354 ×2
  • Brick Wedged 2 x 2 Facet Medium Blue Part 87620 Element 6149569 ×2
  • Brick Wedged, Sloped 45° 4 x 2 Left Medium Blue Part 43721 Element 6149565 ×1
  • Brick Wedged, Sloped 45° 4 x 2 Right Medium Blue Part 43720 Element 6149566 ×1
  • Brick Wedged, Angled 3 x 2 Left White Part 6565 Element 4527764 or 656501 ×1
  • Brick Wedged, Angled 3 x 2 Right White Part 6564 Element 4526928 or 656401 ×1
  • Brick Wedged, Curved Inverted 6 x 4 White Part 43713 Element 6580008 or 4261693 ×1

Bricks Curved 10 pieces

  • Brick Curved 4 x 1 Double, No Studs Blue Part 93273 Element 4649773 ×2
  • Brick Curved 2 x 4 x 1 1/3 Medium Blue Part 6081 Element 6149564 or 4179832 ×4
  • Brick Curved 2 x 1 No Studs [1/2 Bow] White Part 11477 Element 6552145 or 6548276 ×4

Technic Bricks 10 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×6
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Dark Bluish Gray Part 32064a Element 6178919 or 4210935 ×4

Technic Bushes 10 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×8
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×2

Bricks Round and Cones 9 pieces

  • Brick Round 2 x 2 Dome Top, Hollow Stud Dark Bluish Gray Part 30367c Element 4161674 ×2
  • Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation Dark Bluish Gray Part 30361c Element 4161673 ×2
  • Brick Round 2 x 2 with Axle Hole Green Part 3941 Element 4251378 or 4239200 ×1
  • Brick Round Corner 3 x 3 x 2 Dome Top White Part 88293 Element 4586275 ×2
  • Brick Round 2 x 2, Pin Holes Yellow Part 17485 Element 6378132 or 6102524 ×2

Wheels and Tyres 9 pieces

  • Tyre 14 x 4 Smooth Small Single [New Style] Black Part 59895 Element 4516843 or 4507700 ×4
  • Wheel 18 x 8 with Fake Bolts and Shallow Spokes and Axle Hole White Part 56903 Element 6013484 ×1
  • Wheel 8 x 6 White Part 4624 Element 462401 ×4

Tiles 7 pieces

  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×6
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×1

Plates Wedged 6 pieces

  • Wedge Plate 3 x 2 Left Black Part 43723 Element 4180536 ×1
  • Wedge Plate 3 x 2 Right Black Part 43722 Element 4180508 ×1
  • Wedge Plate 4 x 6 Cut Corners Black Part 32059 Element 4129572 ×1
  • Wedge Plate 2 x 4 Blue Part 51739 Element 4609454 ×1
  • Wedge Plate 4 x 2 Left Blue Part 41770 Element 6430083 or 4161330 ×1
  • Wedge Plate 4 x 2 Right Blue Part 41769 Element 6430076 or 4160867 ×1

Technic Gears 6 pieces

  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×2
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×4

Technic Beams 4 pieces

  • Technic Beam Triangle Thin [Type II] Black Part 99773 Element 6331437 or 6010864 ×2
  • Technic Beam 3 x 3 T-Shape Thick Dark Bluish Gray Part 60484 Element 4552349 or 4535773 ×2

Transportation - Sea and Air 4 pieces

  • Helicopter Landing Ski 1 x 6 with Pin Hole Dark Bluish Gray Part 15540 Element 6068029 ×4

Bricks Special 2 pieces

  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Light Bluish Gray Part 22885 Element 6123809 ×2

Panels 2 pieces

  • Panel 1 x 2 x 1 [Rounded Corners] Red Part 4865b Element 6146217 or 486521 ×2

String, Bands and Reels 2 pieces

  • String Cord Thin (0.5mm) 50cm Black Part 56823c50 Element 6530026 or 6489925 ×1
  • String Reel 2 x 1 x 2 Drum with Axle Hole Light Bluish Gray Part 61510 Element 4521532 ×1

Tiles Round and Curved 2 pieces

  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×2

Supports, Girders and Cranes 1 piece

  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×1

Technic Beams Special 1 piece

  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-Reduced Light Bluish Gray Part 33299b Element 4563045 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 3 x 6 x 1 Curved with 2 Circular Stud Holders in Bottom Trans-Brown Part 62360 Element 6074885 ×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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