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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.

Aero Booster

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8106 Aero Booster

308 pieces in 106 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 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

White 74 pieces

  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×14
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×4
  • Brick Curved 2 x 2 with Lip, No Studs White Part 30602 Element 4195869 ×1
  • Brick Sloped 45° 3 x 4 Double / 33° White Part 4861 Element 486101 ×2
  • Brick Wedged, Curved 16 x 4 Triple with Inner Ridges White Part 45301 Element 6192347 or 4503223 ×3
  • Brick Wedged, Curved 8 x 3 x 2 Open Left White Part 41750 Element 6312345 or 6038751 ×1
  • Brick Wedged, Curved 8 x 3 x 2 Open Right White Part 41749 Element 6312346 or 6038641 ×1
  • Brick Wedged, Curved Inverted 10 x 6 x 2 Cockpit White Part 47406 Element 6345205 or 4612568 ×3
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top White Part 30383 Element 6265695 or 4262011 ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth White Part 44302a Element 4183048 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×6
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×5
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] White Part 6019 Element 601951 or 601901 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] White Part 2540 Element 4140583 or 254051 ×4
  • Technic Brick 1 x 4 [3 Pin Holes] White Part 3701 Element 6601913 or 370101 ×3
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Socket White Part 48169 Element 6328452 or 4218483 ×4
  • Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction White Part 47455 Element 6352203 or 4298040 ×6
  • Tile 1 x 2 with Engraved Code for Exo-Force White Part 3069bpr0073 Element 4506852 or 4506552 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×2
  • Windscreen 10 x 6 x 2 Curved White Part 45705 Element 4521148 or 4503530 ×3

Black 73 pieces

  • Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) Black Part 30359b Element 4164067 ×4
  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×2
  • Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder Black Part 30367b Element 4158779 ×2
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×5
  • Brick Wedged, Curved 4 x 4 No Top Studs Black Part 47753 Element 4219107 ×2
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×1
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends Black Part 30552 Element 4158848 ×2
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×2
  • Launcher, Technic Competition Cannon Flat Bottom [Complete Assembly] Black Part 57796 Element 4518409 or 4499434 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×3
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Support 1 x 1 x 5 1/3 Spiral Staircase Axle Black Part 40244 Element 4155558 ×4
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×2
  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×6
  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×1
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×1
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 2 spares in the box ×14
  • Wedge Plate 4 x 4 Cut Corner Black Part 30503 Element 4160025 ×4
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Black Part 56145 Element 4299389 or 4284946 ×1

Light Bluish Gray 44 pieces

  • Brick 1 x 3 Light Bluish Gray Part 3622 Element 4211428 ×2
  • Brick Round 2 x 2 with Axle Hole Light Bluish Gray Part 3941 Element 4211526 ×1
  • Hinge Brick 2 x 2 Locking with 2 Fingers Vertical and Axle Hole, 9 Teeth Light Bluish Gray Part 40902 Element 6093870 or 4215971 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Bluish Gray Part 6538b Element 4211543 ×1
  • Technic Beam 1 x 11.5 Double Bent Thick Light Bluish Gray Part 32009 Element 6271156 or 4234240 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Light Bluish Gray Part 32064b ×20
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Horizontal Top] Light Bluish Gray Part 48170 Element 4226637 ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×6

Blue 32 pieces

  • Bracket 2 x 2 - 2 x 2 Blue Part 3956 Element 6019215 or 395623 ×1
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1
  • Brick Sloped 33° 3 x 2 Blue Part 3298 Element 6294307 or 6141996 ×2
  • Brick Wedged, Sloped 4 x 4 Triple, Stud Notches Blue Part 48933 Element 6030195 or 4571219 ×4
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×10
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×4
  • Technic Plate 2 x 6 [5 Holes] Blue Part 32001 Element 4114027 or 3200123 ×1
  • Technic Plate 2 x 8 [7 Holes] Blue Part 3738 Element 373823 ×1
  • Wedge Plate 3 x 3 Cut Corner Blue Part 2450 Element 6536558 or 4609330 ×2
  • Wedge Plate 3 x 6 Cut Corners Blue Part 2419 Element 241923 ×1

Dark Bluish Gray 26 pieces

  • Brick Special 1 x 1 with Studs on 2 Sides Dark Bluish Gray Part 47905 Element 4213574 ×2
  • Large Figure Foot, with Ball Joint Socket 3 x 6 x 2 1/3 Dark Bluish Gray Part 32475 Element 4227757 ×2
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×5
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Dark Bluish Gray Part 32174 Element 4217829 ×4
  • Technic Axle and Pin Connector Angled #4 - 135° Dark Bluish Gray Part 32192 Element 6262899 or 4210688 ×4
  • Technic Brick 1 x 14 [13 Pin Holes] Dark Bluish Gray Part 32018 Element 4211137 ×2
  • Technic Brick Special 2 x 2 with 10.2mm Balls [Center Mold Indention] Dark Bluish Gray Part 57908 Element 4498096 ×1
  • Technic Brick Special 2 x 2 with Solid Ball and Axle Hole Dark Bluish Gray Part 57909a ×4
  • Technic Brick Special 2 x 3 with Pin Holes, Rotation Joint Ball Half [Horizontal Top], Rotation Joint Socket Dark Bluish Gray Part 47454 Element 4220507 ×2

Red 22 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Red Part 54200 Element 5074621 or 4504379 ×2
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges Red Part 41748 Element 6191993 or 4286467 ×1
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges Red Part 41747 Element 6268534 or 4286466 ×2
  • Brick Wedged, Curved Inverted 6 x 2 Left Red Part 41765 Element 6447087 or 6064181 ×1
  • Brick Wedged, Curved Inverted 6 x 2 Right Red Part 41764 Element 6447090 or 6064184 ×2
  • Hinge Plate 1 x 12 Locking with Angled Side Extensions and Tapered Ends, 7 Teeth Red Part 57906 Element 4502312 ×2
  • Projectile, Technic Competition Arrow, Liftarm Shaft with Hollow Black Rubber End Red Part 57028c01 Element 4504409 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×3
  • Technic Axle Connector Ridged [with x Hole x Orientation] Red Part 6538b Element 4125189 ×1
  • Technic Driving Ring 2L, 4 Ridges Red Part 6539 Element 4278957 ×1
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×4

Pearl Light Gray 15 pieces

  • Arm Mechanical with Clip [Thin Support] Pearl Light Gray Part 53989 Element 4494600 or 4288114 ×8
  • Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End Pearl Light Gray Part 47456 Element 4493865 or 4286598 ×2
  • Engine, Very Large Turbine, with Blue Marbled Center Pearl Light Gray Part 53983pat0002 Element 4506968 ×3
  • Hose, Ribbed 7mm D. 15L / 12.0cm Pearl Light Gray Part 78c15 Element 4501125 ×2

Yellow 14 pieces

  • Cone 1 x 1 [No Top Groove] Yellow Part 4589 Element 458924 ×3
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×4
  • Technic Axle Connector Ridged [with x Hole x Orientation] Yellow Part 6538b Element 4140507 ×2
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 2 spares in the box ×5

Trans-Neon Orange 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 ×4

Trans-Green 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×2

Trans-Brown 1 piece

  • Windscreen 5 x 2 x 1 2/3 Trans-Brown Part 6070 Element 4204624 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 8106-1 [No Color/Any Color] Part 59199 Element 4503649 ×1

Minifigures 1 figure

  • Ha-Ya-To in Gold Armor 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.

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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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