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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.

Monster Truck

Checking

31101 Monster Truck

163 pieces in 54 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 40 pieces

  • Bracket 5 x 2 x 2 1/3 with Holes, Inside Stud Holder Black Part 76766 Element 6171066 or 6012983 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Black Part 85984 Element 4548180 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Plate Special 1 x 2, Top Clip [Split] Black Part 92280 Element 4598528 ×4
  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×3
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Black Part 99206 Element 6052126 ×2
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×4
  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×2
  • Technic Pin Connector Perpendicular 2 x 4 Bent - Beam with 90 Hole Ø 4.8 Black Part 11455 Element 6172966 or 6019986 ×4
  • Tyre 15 x 6 Offset Tread Small with Band around Center Black Part 87414 Element 4578677 ×4
  • Tyre 37 x 18 R Balloon Black Part 56891 Element 6589426 or 6518543 ×4
  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Black Part 55982 Element 4517737 ×4

Dark Turquoise 32 pieces

  • Brick 1 x 2 Dark Turquoise Part 3004 Element 6217659 or 4121500 ×2
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Dark Turquoise Part 6091 Element 6399564 or 6213785 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Turquoise Part 11477 Element 6249427 ×6
  • Plate 1 x 1 Dark Turquoise Part 3024 Element 6213778 or 4121555 1 spare in the box ×6
  • Plate 1 x 2 Dark Turquoise Part 3023 Element 6213777 or 4218493 ×4
  • Plate 2 x 2 Dark Turquoise Part 3022 Element 6249390 or 4170141 ×6
  • Tile 1 x 2 with Groove Dark Turquoise Part 3069b Element 6213779 or 4164140 ×4
  • Tile 1 x 4 with Groove Dark Turquoise Part 2431 Element 6292786 or 6236770 ×2

Light Bluish Gray 26 pieces

  • Bar 4L (Lightsaber Blade / Wand) Light Bluish Gray Part 30374 Element 6116608 or 4211628 ×2
  • Brick Special 1 x 4 with 4 Studs on One Side Light Bluish Gray Part 30414 Element 4211636 ×2
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×1
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×1
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×4
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×8
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×4

Red 19 pieces

  • Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top] Red Part 28802 Element 6168619 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Red Part 85984 Element 4651524 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Technic Brick 1 x 1 with Pin Hole Red Part 6541 Element 654121 ×4
  • Technic Pin with Friction Ridges Lengthwise and Towball Red Part 6628 Element 6254216 ×4
  • Wheel Arch, Mudguard 2 x 4 Studded with Hole Red Part 60212 Element 4600176 or 4518231 ×2

White 15 pieces

  • Bracket 1 x 2 - 1 x 2 White Part 99781 Element 6552141 or 6548275 ×4
  • Brick Curved 4 x 1 Double, No Studs White Part 93273 Element 6552143 or 6023806 ×2
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×2
  • Plate 4 x 4 White Part 3031 Element 6552127 or 4243812 ×1
  • Wheel 8 x 6 with Slot White Part 34337 Element 6194809 1 spare in the box ×4

Dark Bluish Gray 8 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Dark Bluish Gray Part 99780 Element 6000606 ×4
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Dark Bluish Gray Part 3839b Element 4263176 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Dark Bluish Gray Part 32000 Element 4210762 ×2

Bright Light Orange 5 pieces

  • Brick Curved 2 x 2 x 2/3 Bright Light Orange Part 15068 Element 6099730 ×2
  • Tile 2 x 2 with Groove Bright Light Orange Part 3068b Element 6020147 or 4525871 ×3

Blue 4 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×4

Trans-Brown 4 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Brown Part 54200 Element 6245263 or 4244368 1 spare in the box ×4

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

Tan 2 pieces

  • Plate 2 x 3 Tan Part 3021 Element 4118790 or 302105 ×2

Trans-Red 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Red Part 54200 Element 6245252 or 4244363 1 spare in the box ×2

Trans-Yellow 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×2

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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