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LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

Record Breaker

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42033 Record Breaker

125 pieces in 46 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 36 pieces

  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×3
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×3
  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×2
  • Technic Panel Fairing #21 5L Small Smooth, Side B Black Part 11946 Element 6316923 or 6023036 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Black Part 11947 Element 6319983 or 6022761 ×1
  • Technic Pin Double Triangle 1 x 3 with 2 Clips Completely Round Pinholes Black Part 47994 Element 4220098 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×18
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×2
  • Tyre 37 x 22 ZR Black Part 55978 Element 6518542 or 4499234 ×2
  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Black Part 55982 Element 4517737 ×1

Light Bluish Gray 29 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×2
  • Technic Axle and Pin Connector Perpendicular Double Split Light Bluish Gray Part 41678 Element 4211889 ×2
  • Technic Axle and Pin Connector Perpendicular Triple Light Bluish Gray Part 63869 Element 6331441 or 4538007 ×3
  • Technic Beam 2 x 4 L-Shape Thick Light Bluish Gray Part 32140 Element 6271831 or 4211610 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×6
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins Light Bluish Gray Part 48989 Element 4225033 ×3
  • Technic Wedge Belt Wheel [aka Pulley] Light Bluish Gray Part 4185 Element 6321743 or 4494222 ×2
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Light Bluish Gray Part 56145 Element 4297210 ×2

Blue 23 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×3
  • Technic Beam 1 x 3 Thin Blue Part 6632 Element 6344176 or 4107829 ×4
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×16

White 16 pieces

  • Large Figure Wing, Small White Part 61800 Element 6056830 or 6013544 ×1
  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×2
  • Technic Beam 1 x 13 Thick White Part 41239 Element 6634561 or 4620671 ×1
  • Technic Beam 1 x 4 Thin White Part 32449 Element 6360072 or 4144138 ×2
  • Technic Beam 2 x 4 L-Shape Thick White Part 32140 Element 6271824 or 4118980 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin White Part 32250 Element 6430835 or 6063443 ×4
  • 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

Dark Bluish Gray 7 pieces

  • Pullback Motor 6 x 3 x 5 Dark Bluish Gray Part 12799 Element 6143751 or 6024100 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×2
  • Technic Beam 3 x 3 T-Shape Thick Dark Bluish Gray Part 60484 Element 4552349 or 4535773 ×2
  • Technic Steering Wheel Pilot's Yoke [Hollow Stud, Axle Hole with + Opening] Dark Bluish Gray Part 18352 Element 6082043 ×1

Red 6 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×6

Metallic Silver 3 pieces

  • Technic Pin Connector Round [Slotted] Metallic Silver Part 62462 Element 6542283 or 6204673 ×3

Dark Blue 2 pieces

  • Technic Panel Curved 11 x 3 with 10 Pin Holes Through Panel Surface Dark Blue Part 11954 Element 6096335 or 6059026 ×2

Dark Tan 1 piece

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1

Trans-Brown 1 piece

  • Windscreen 7 x 4 x 2 Round with Handle Trans-Brown Part 92279 Element 6337336 or 6245235 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42033-1 [No Color/Any Color] Part 19073 Element 6096147 ×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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