Free tool

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.

Fierce Flyer

Checking

31004 Fierce Flyer

166 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

Reddish Brown 59 pieces

  • Brick 1 x 2 Reddish Brown Part 3004 Element 4613963 or 4211149 ×3
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×1
  • Brick Sloped 18° 4 x 2 Reddish Brown Part 30363 Element 4225869 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Reddish Brown Part 54200 Element 4504376 or 4260486 1 spare in the box ×4
  • Brick Sloped 33° 3 x 1 Reddish Brown Part 4286 Element 4211197 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Reddish Brown Part 3040b Element 4211199 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Reddish Brown Part 3747b Element 4508616 or 4217916 ×2
  • Brick Sloped Inverted 45° 2 x 1 Reddish Brown Part 3665 Element 4211222 ×4
  • Brick Special 1 x 1 with Headlight Reddish Brown Part 4070 Element 4225469 ×2
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 1 spare in the box ×2
  • Plate 1 x 2 Reddish Brown Part 3023 Element 4211150 ×5
  • Plate 1 x 3 Reddish Brown Part 3623 Element 4211152 ×4
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×4
  • Plate 2 x 3 Reddish Brown Part 3021 Element 4211189 ×6
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×3
  • Plate 2 x 6 Reddish Brown Part 3795 Element 4211247 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Reddish Brown Part 3794b Element 4219726 ×3
  • Tile 1 x 4 with Groove Reddish Brown Part 2431 Element 4211194 ×2
  • Tile 2 x 2 with Groove Reddish Brown Part 3068b Element 4271949 or 4264030 ×2
  • Wedge Plate 4 x 2 Left Reddish Brown Part 41770 Element 4205470 ×2
  • Wedge Plate 4 x 2 Right Reddish Brown Part 41769 Element 4205469 ×2
  • Wedge Plate 4 x 4 Cut Corner Reddish Brown Part 30503 Element 4224732 ×2

Black 34 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Black Part 53451 Element 6270103 or 4568385 1 spare in the box ×7
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Black Part 44302a Element 4183060 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×4
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×2
  • Plate Special 1 x 1 with Tooth Black Part 49668 Element 4273590 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×2
  • Plate Special 1 x 2 with Angled Handles on Side Black Part 92692 Element 4604304 ×1
  • Plate Special 1 x 2 with Clip Horizontal on End Black Part 63868 Element 6336989 or 4535739 ×3
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×2
  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×2

White 30 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
  • Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger On End, without Groove White Part 44301b Element 6266219 ×4
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×2
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 2 Corner White Part 2420 Element 6548254 or 242051 ×2
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×3
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] White Part 2654 Element 6601843 or 6552259 ×4
  • Plate Special 1 x 1 with Tooth White Part 49668 Element 6601935 or 4224792 ×3
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] White Part 60470b Element 6347287 or 4556152 ×2
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2

Yellow 29 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Yellow Part 6091 Element 6388492 or 6361082 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove Yellow Part 44301a Element 4588025 or 4295303 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, without Groove Yellow Part 44567b ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Yellow Part 44302a Element 4183981 ×6
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Yellow Part 61252 Element 6347294 or 4540040 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Yellow Part 48336 Element 4501232 ×2
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 1 spare in the box ×2
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×2
  • Tile Special 1 x 1 with Clip with Rounded Tips Yellow Part 12825 Element 6030719 ×6

Dark Brown 6 pieces

  • Brick Curved 3 x 1 No Studs Dark Brown Part 50950 Element 6022199 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Brown Part 3660 Element 4648296 ×2
  • Wedge Plate 3 x 3 Cut Corner Dark Brown Part 2450 Element 4650257 ×2

Blue 2 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2

Light Bluish Gray 2 pieces

  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×2

Tan 2 pieces

  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×2

Trans-Light Blue 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 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.