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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.

Red Dragon

Checking

31145 Red Dragon

149 pieces in 64 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

Red 59 pieces

  • Bracket 1 x 1 - 1 x 1 Inverted Red Part 36840 Element 6249907 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Red Part 99780 Element 6089698 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×2
  • Brick Arch 1 x 3 x 2 Curved Top Red Part 6005 Element 6212012 or 4631357 ×1
  • Brick Arch 1 x 6 x 3 1/3 Curved Top Red Part 6060 Element 6297822 or 6185958 ×1
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Red Part 6091 Element 6184782 or 609121 ×4
  • Brick Curved 1 x 3 x 2 Inverted [Inside Bow] Red Part 18653 Element 6294331 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×1
  • Brick Curved 2 x 1 with Inverted Cutout Red Part 78666 Element 6369577 ×2
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Red Part 47457 Element 4220515 ×3
  • Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Red Part 25214 Element 6176298 ×2
  • Brick Round, Curved 2 x 2 x 1 1/3, Corner Red Part 67810 Element 6384341 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Red Part 4871 Element 487121 ×1
  • Brick Special 1 x 1 with Stud on 1 Side Red Part 87087 Element 4558886 ×4
  • Brick Wedged, Curved 1 x 2 x 2/3 No Studs, Wing End Red Part 47458 Element 6375708 or 4220516 ×5
  • Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 7 Teeth Red Part 50340 Element 6266205 ×1
  • Mudguard 2 x 4 with Molded Headlights Red Part 44674 Element 4653024 or 4500123 ×1
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×5
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate Round Corner 2 x 2 with 1 x 1 Cutout Red Part 79491 Element 6384910 ×2
  • Plate Round Corner 3 x 3 Red Part 30357 Element 4178428 or 3035721 ×2
  • Plate Special 1 x 2 Rounded with 2 Open Studs Red Part 35480 Element 6210269 ×3
  • Plate Special 1 x 2 with Pin Hole on Top Red Part 11458 Element 6099736 ×2
  • Plate Special Round 1 x 2 Half Circle with Stud (Jumper) Red Part 1745 Element 6510057 or 6400110 ×1
  • Technic Pin 1/2 with Friction Red Part 89678 Element 6378120 1 spare in the box ×2
  • Tile Round 1 x 1 Quarter Red Part 25269 Element 6170390 1 spare in the box ×2
  • Tile Round 2 x 2 with Bottom Stud Holder Red Part 14769 Element 6066342 ×2

Light Bluish Gray 20 pieces

  • Plate Special 1 x 1 Rounded with Handle Light Bluish Gray Part 26047 Element 6225246 ×2
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×5
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×7
  • Technic Axle Towball Light Bluish Gray Part 2736 Element 6443149 or 4211375 ×6

Bright Light Yellow 15 pieces

  • Brick Arch 1 x 6 x 3 1/3 Curved Top Bright Light Yellow Part 6060 Element 6289285 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Bright Light Yellow Part 11477 Element 6147726 ×3
  • Brick Curved 3 x 2 No Studs Bright Light Yellow Part 24309 Element 6469045 ×2
  • Plate 1 x 1 Bright Light Yellow Part 3024 Element 6554793 or 6058014 1 spare in the box ×2
  • Plate 1 x 2 Bright Light Yellow Part 3023 Element 6554796 or 6201647 ×4
  • Plate 2 x 2 Bright Light Yellow Part 3022 Element 6554804 or 6316265 ×2
  • Plate 2 x 4 Bright Light Yellow Part 3020 Element 6554802 or 6296524 ×1

Dark Red 14 pieces

  • Bracket 1 x 2 - 1 x 2 Dark Red Part 99781 Element 6264026 ×2
  • Bracket 2 x 2 with 1 x 2 Vertical Studs Dark Red Part 41682 Element 6359692 ×1
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends [No Side Slots] Dark Red Part 53923 Element 6431687 ×1
  • Plate 1 x 2 Dark Red Part 3023 Element 4539097 or 4162582 ×4
  • Plate Round 1 x 1 with Open Stud Dark Red Part 85861 Element 6168645 or 6073031 1 spare in the box ×3
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Dark Red Part 4304 Element 6470185 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Dark Red Part 32064a Element 6206250 or 4539059 ×2

Medium Azure 10 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Medium Azure Part 11477 Element 6603334 or 6071246 ×2
  • Tile 2 x 2 Curved, Macaroni Medium Azure Part 27925 Element 6258069 ×2
  • Tile Round 1 x 1 Quarter Medium Azure Part 25269 Element 6603341 or 6150370 1 spare in the box ×6

Tan 9 pieces

  • Animal / Creature Body Part, Claw with Clip Tan Part 3171 Element 6440775 ×2
  • Animal Body Part, Horn (Cattle) Tan Part 64847 Element 6368620 or 4551156 1 spare in the box ×1
  • Plate Special 1 x 1 with Vertical Tooth Tan Part 15070 Element 6143058 ×4
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] Tan Part 15208 Element 6046907 ×2

Dark Bluish Gray 7 pieces

  • Bar 2L with Towball Dark Bluish Gray Part 22484 Element 6364352 or 6360117 ×1
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×5
  • Plate Special 2 x 2 with Horizontal T-Bar Underneath Dark Bluish Gray Part 5066 Element 6457961 ×1

Black 5 pieces

  • Bar 2L with Stop in Center Black Part 78258 Element 6371584 1 spare in the box ×1
  • Brick Curved Inverted 2 x 1 Black Part 24201 Element 6147050 ×2
  • Plate Special 4 x 4 with 3 x 3 Quarter Round Cutout Black Part 35044 Element 6208787 ×2

Yellow 3 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Yellow Part 6091 Element 6388492 or 6361082 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Yellow Part 60470b Element 6337231 or 4556156 ×1

Light Aqua 2 pieces

  • Tile Round 1 x 1 Quarter Light Aqua Part 25269 Element 6199886 1 spare in the box ×2

Trans-Clear 2 pieces

  • Bar, Angled with 1 x 1 Round Plate / Stud on End Trans-Clear Part 65578 Element 6510188 or 6285587 1 spare in the box ×2

White 2 pieces

  • Tile Round 2 x 2 with Eye, Blue Iris, Black Pupil Print White Part 14769pr1116 Element 6545236 or 6252746 ×2

Bright Pink 1 piece

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Bright Pink Part 2654 Element 6423955 or 6139480 ×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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