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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.

Race Plane

Checking

42117 Race Plane

154 pieces in 65 part and color combinations.

LEGO counts 145 pieces. This inventory comes from a separate parts catalog and lists 154; the two do not always count the same elements, so their totals differ. 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

Technic Pins 40 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×2
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×14
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×5
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×4
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×9
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Orange Part 32054 Element 6143033 or 4229603 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1
  • Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×4

Technic Connectors 26 pieces

  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×1
  • Technic Pin Connector Hub with 1 Axle Black Part 22961 Element 6253260 ×1
  • Technic Pin Connector Toggle Joint Smooth Double with 2 Pins [Square Holes] Black Part 65746 Element 6328175 ×1
  • Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Black Part 87408 Element 6278412 or 4558692 ×1
  • Technic Pin Connector Hub with 2 Axles Dark Bluish Gray Part 27940 Element 6167281 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Turquoise Part 42003 Element 6295182 ×9
  • Technic Axle Connector with Axle Hole [Reinforced] Light Bluish Gray Part 42135 Element 6380605 ×1
  • Technic Axle and Pin Connector Perpendicular Split Light Bluish Gray Part 92907 Element 6279023 or 4630114 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° White Part 32034 Element 6271870 or 4125554 ×4
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole White Part 32184 Element 6276981 or 6114940 ×1
  • Technic Pin Connector Round 1L [Beam] White Part 18654 Element 6550155 or 6177114 1 spare in the box ×5

Technic Axles 16 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×5
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×1
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×2
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×2

Technic Beams 16 pieces

  • Technic Beam 1 x 5 Thin Dark Bluish Gray Part 32017 Element 32017199 or 6215176 ×2
  • Technic Beam 1 x 7 Thick Dark Turquoise Part 32524 Element 6323477 or 4144021 ×2
  • Technic Beam 1 x 4 Thin Light Bluish Gray Part 32449 Element 6370947 or 6074036 ×4
  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×2
  • Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×2
  • Technic Beam 1 x 7 Thin White Part 32065 Element 6271584 or 6176554 ×2
  • Technic Beam 2 x 4 L-Shape Thick White Part 32140 Element 6271824 or 4118980 ×1
  • Technic Connector Beam 3 x 3 White Part 39793 Element 6247424 ×1

Bricks Curved 10 pieces

  • Brick Curved Inverted 2 x 1 Dark Bluish Gray Part 24201 Element 6215212 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Turquoise Part 11477 Element 6249427 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Orange Part 11477 Element 6055069 ×2
  • Brick Curved 4 x 2 No Studs Orange Part 93606 Element 6054529 ×1
  • Brick Curved 2 x 2 with Lip, No Studs Trans-Brown Part 30602 Element 6507872 or 6171717 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] White Part 11477 Element 6552145 or 6548276 ×2

Plates 9 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 1 spare in the box ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 1 Orange Part 3024 Element 4524929 or 4203454 1 spare in the box ×2
  • Plate 2 x 2 Orange Part 3022 Element 4613982 or 4159007 ×1
  • Plate 2 x 3 Orange Part 3021 Element 4125278 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×2

Technic Bushes 7 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 ×7

Bricks Sloped 6 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 1 spare in the box ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Green Part 54200 Element 6245270 or 4244573 1 spare in the box ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Red Part 54200 Element 6245252 or 4244363 1 spare in the box ×1

Technic Panels 6 pieces

  • Technic Panel 5 x 11 x 1 Tapered Dark Turquoise Part 18945 Element 6323476 ×2
  • Technic Panel Fairing #21 5L Small Smooth, Side B Dark Turquoise Part 11946 Element 6528359 or 6337272 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Dark Turquoise Part 11947 Element 6528358 or 6343512 ×1
  • Technic Panel Fairing #21 5L Small Smooth, Side B White Part 11946 Element 6330084 or 6114580 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A White Part 11947 Element 6343987 or 6114583 ×1

Technic Gears 4 pieces

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×1
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×3

Tiles 3 pieces

  • Tile 1 x 2 with Groove Orange Part 3069b Element 4188771 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2

Wheels and Tyres 3 pieces

  • Tyre 14 x 4 Smooth Small Single [New Style] Black Part 59895 Element 4516843 or 4507700 ×3

Plates Special 2 pieces

  • Plate Special 1 x 2 with Pin Hole Underneath White Part 18677 Element 6232029 ×2

Technic Special 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Orange Part 48267 Element 6292485 ×2

Bricks 1 piece

  • Brick 1 x 4 Black Part 3010 Element 301026 ×1

Large Buildable Figures 1 piece

  • Large Figure Wing, Small White Part 61800 Element 6056830 or 6013544 ×1

Stickers 1 piece

  • Sticker Sheet for Set 42117-1 [No Color/Any Color] Part 72378 Element 6324129 ×1

Transportation - Sea and Air 1 piece

  • Propeller 3 Blade 9 Diameter with Pin Hole, Recessed Center Black Part 15790 Element 6055123 ×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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