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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.

Fire Plane

Checking

42040 Fire Plane

578 pieces in 105 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

Black 198 pieces

  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×8
  • Technic Axle 6 Black Part 3706 Element 370626 ×3
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×2
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×10
  • Technic Axle and Pin Connector Angled #4 - 135° Black Part 32192 Element 6262897 or 4121610 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×12
  • Technic Axle and Pin Connector Toggle Joint Smooth Black Part 32126 Element 6457112 or 6322045 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×4
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×2
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 ×3
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×1
  • Technic Knob Wheel Black Part 32072 Element 6284188 or 4248204 ×5
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Black Part 15100 Element 6073231 ×10
  • Technic Pin Connector Hub with 2 Perpendicular Axles Black Part 10197 Element 6099801 or 6098801 ×3
  • Technic Pin Connector Toggle Joint Smooth Double with 2 Pins Black Part 48496 Element 4849626 or 4238840 ×1
  • Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Black Part 87408 Element 6278412 or 4558692 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 2 spares in the box ×117
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×4
  • Tyre 17.5 x 6 with Shallow Staggered Treads and Middle Band Black Part 92409 Element 4617848 ×2
  • Tyre Offset Tread with Center Band 23 x 7 Black Part 61254 Element 4541455 ×2

Light Bluish Gray 104 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×11
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×7
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×3
  • Technic Axle Connector Hub with 3 Axles at 120° Light Bluish Gray Part 57585 Element 4502595 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×8
  • Technic Axle Towball Light Bluish Gray Part 2736 Element 6443149 or 4211375 ×3
  • Technic Axle and Pin Connector Perpendicular Light Bluish Gray Part 6536 Element 6261375 or 4211775 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×9
  • Technic Axle and Pin Connector Perpendicular Split Light Bluish Gray Part 92907 Element 6279023 or 4630114 ×3
  • Technic Axle and Pin Connector Perpendicular Triple Light Bluish Gray Part 63869 Element 6331441 or 4538007 ×4
  • Technic Beam 1 x 15 Thick Light Bluish Gray Part 32278 Element 4542577 or 4211770 ×2
  • Technic Beam 1 x 7 Thick Light Bluish Gray Part 32524 Element 4495930 or 4211665 ×6
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Light Bluish Gray Part 32271 Element 6276836 or 4211624 ×2
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Light Bluish Gray Part 33299a Element 4211688 ×2
  • Technic Beam 3 x 3 L-Shape Thin Light Bluish Gray Part 32056 Element 6271815 or 4211574 ×4
  • Technic Beam Triangle Thin [Type II] Light Bluish Gray Part 99773 Element 6331428 or 6009019 ×7
  • Technic Engine Connecting Rod Light Bluish Gray Part 2852 Element 6000018 or 4655728 ×2
  • Technic Engine Cylinder with Side Slots Light Bluish Gray Part 2850a ×2
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×11
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×10
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
  • Technic Steering Knuckle Arm with Ball Joint Light Bluish Gray Part 6572 Element 4211711 ×1
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2

White 80 pieces

  • Rubber Belt Small [15mm ID] [Round Cross Section] White Part 85543 Element 6699001 or 4580665 ×1
  • Technic Axle and Pin Connector Angled #1 White Part 32013 Element 6332573 or 4118981 ×12
  • Technic Axle and Pin Connector Angled #2 - 180° White Part 32034 Element 6271870 or 4125554 ×5
  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×12
  • Technic Beam 1 x 13 Thick White Part 41239 Element 6634561 or 4620671 ×4
  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×7
  • Technic Beam 1 x 7 Thick White Part 32524 Element 6564912 or 6318056 ×3
  • Technic Beam 1 x 9 Bent (6 - 4) Thick White Part 6629 Element 6279886 or 6063839 ×4
  • Technic Beam 1 x 9 Thick White Part 40490 Element 6001831 or 4156341 ×4
  • Technic Beam 2 x 4 L-Shape Thick White Part 32140 Element 6271824 or 4118980 ×6
  • Technic Panel 3 x 11 x 1 White Part 15458 Element 6055627 ×2
  • Technic Panel 5 x 11 x 1 White Part 64782 Element 6004135 or 4580019 ×2
  • Technic Panel 5 x 11 x 1 Tapered White Part 18945 Element 6097440 ×7
  • Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface White Part 62531 Element 6004137 ×2
  • Technic Panel Fairing # 3 Small Smooth Long, Side A White Part 64683 Element 4547581 ×1
  • Technic Panel Fairing # 4 Small Smooth Long, Side B White Part 64391 Element 4547582 ×1
  • Technic Panel Fairing #5 Long Smooth, Side A White Part 64681 Element 4558802 ×1
  • Technic Panel Fairing #6 Long Smooth, Side B White Part 64393 Element 4558797 ×1
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] White Part 41669 Element 4173941 ×2
  • Wheel 18 x 8 with Fake Bolts and Shallow Spokes and Axle Hole White Part 56903 Element 6013484 ×2
  • Wheel 31 x 15 Technic, 7 Pin Holes White Part 60208 Element 6524592 or 4512751 ×1

Red 78 pieces

  • Brick Round 2 x 2 Dome Top, Hollow Stud Red Part 30367c Element 4216657 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×20
  • Technic Axle Connector Smooth [with x Hole + Orientation] Red Part 59443 Element 4513174 ×8
  • Technic Axle Connector with Axle Hole Red Part 32039 Element 4118897 ×5
  • Technic Beam 1 x 11 Thick Red Part 32525 Element 4562805 or 4534913 ×10
  • Technic Beam 1 x 15 Thick Red Part 32278 Element 4542575 or 4163147 ×3
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×2
  • Technic Beam 1 x 5 Thick Red Part 32316 Element 4142132 or 4128589 ×10
  • Technic Beam 3 x 5 L-Shape Thick Red Part 32526 Element 4143154 ×4
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×10
  • Technic Panel Fairing # 3 Small Smooth Long, Side A Red Part 64683 Element 4540801 ×1
  • Technic Panel Fairing # 4 Small Smooth Long, Side B Red Part 64391 Element 4540798 ×1
  • Technic Panel Fairing #21 5L Small Smooth, Side B Red Part 11946 Element 6340601 or 6022750 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Red Part 11947 Element 6343986 or 6022752 ×1

Blue 64 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×24
  • Technic Beam 1 x 3 Thick Blue Part 32523 Element 4509376 or 4144284 ×2
  • Technic Beam 2 x 4 L-Shape Thick Blue Part 32140 Element 6271829 or 4168114 ×2
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×7
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×29

Dark Bluish Gray 13 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×1
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×6
  • Technic Link 1 x 6 without Stoppers Dark Bluish Gray Part 32005a Element 4629920 or 4211026 ×1
  • Technic Rotor Blade Small with Hole and Axle Connector End Dark Bluish Gray Part 99012 Element 6271639 or 4651820 ×3

Yellow 11 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×7
  • Technic Engine Crankshaft Yellow Part 2853 Element 6640378 or 4119474 ×2
  • Technic Engine Piston Round Yellow Part 2851 Element 4112203 or 285124 ×2

Trans-Light Blue 8 pieces

  • Brick Round 2 x 2 with Axle Hole Trans-Light Blue Part 3941 Element 6514282 or 6273153 ×8

Tan 7 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×3
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×3
  • Technic Pin Long without Friction Ridges Tan Part 32556 ×1

Dark Tan 5 pieces

  • Technic Axle 5 with Stop Dark Tan Part 15462 Element 6055631 ×5

Trans-Clear 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box ×4

Metallic Silver 2 pieces

  • Technic Pin Connector Round [Slotted] Metallic Silver Part 62462 Element 6542283 or 6204673 ×2

Trans-Red 2 pieces

  • Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 1 spare in the box ×2

Trans-Green 1 piece

  • Tile Round 1 x 1 Trans-Green Part 98138 Element 6514194 or 6274742 1 spare in the box ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42040-1 [No Color/Any Color] Part 20875 Element 6109485 or 6109484 ×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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