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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.

Buggy

Checking

42101 Buggy

117 pieces in 48 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

Technic Pins 25 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×10
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×1
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×5
  • Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×1

Technic Beams 24 pieces

  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×4
  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×3
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×2
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Black Part 32348 Element 6278125 or 4128593 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×4
  • Technic Beam 1 x 3 Thick Bright Light Orange Part 32523 Element 6418455 or 6275899 ×1
  • Technic Beam 1 x 5 Thick Bright Light Orange Part 32316 Element 6203256 or 4248239 ×2
  • Technic Beam 3 x 3 L-Shape Thin Red Part 32056 Element 6609332 or 6271816 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole White Part 60483 Element 6265135 or 6177268 ×2

Technic Axles 20 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×3
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×7
  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×2
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×3

Technic Connectors 20 pieces

  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×1
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Axle and Pin Connector Angled #4 - 135° Black Part 32192 Element 6262897 or 4121610 ×3
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×2
  • Technic Axle and Pin Connector Perpendicular Double Black Part 32291 Element 6280394 or 4140430 ×3
  • Technic Axle and Pin Connector Perpendicular Split Black Part 92907 Element 6279021 or 4610371 ×1
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Dark Bluish Gray Part 15100 Element 6175330 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×2
  • Technic Axle Connector with Axle Hole Red Part 32039 Element 4118897 ×2
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Red Part 87082 Element 6168687 or 4560172 ×1

Technic Bushes 8 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 ×4
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×4

Wheels and Tyres 8 pieces

  • Tyre 30.4 x 14 Offset Tread [Centre Band] Black Part 92402 Element 4619323 ×4
  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes White Part 55982 Element 6092256 or 4490128 ×4

Technic Panels 4 pieces

  • Technic Panel Fairing #21 5L Small Smooth, Side B Bright Light Orange Part 11946 Element 6476816 or 6286429 ×2
  • Technic Panel Fairing #22 5L Small Smooth, Side A Bright Light Orange Part 11947 Element 6389721 or 6178468 ×2

Technic Special 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Red Part 48267 Element 6285599 ×2

Tubes and Hoses 2 pieces

  • Hose Rigid 3mm D. 9L / 7.2cm Bright Light Orange Part 75c09 Element 6374800 or 6282188 ×2

Stickers 1 piece

  • Sticker Sheet for Set 42101-1 [No Color/Any Color] Part 65480 Element 6282034 ×1

Technic Gears 1 piece

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×1

Technic Steering, Suspension and Engine 1 piece

  • Technic Shock Absorber 6.5L with Soft Spring, Standard Coil [Complete Assembly] Light Bluish Gray Part 76138 Element 6027565 or 4265688 ×1

Transportation - Land 1 piece

  • Steering Wheel Small, 2 x 2 [Reinforced] Light Bluish Gray Part 16091 Element 6092956 or 6061697 ×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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