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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.

Dr. Fox Magnifying Machine

Checking

40314 Dr. Fox Magnifying Machine

76 pieces in 40 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

Blue 14 pieces

  • Bracket 1 x 2 - 2 x 2 Blue Part 44728 Element 6117968 or 6037412 ×2
  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Blue Part 87552 Element 4586548 ×4
  • Plate Round Half 4 x 8 Blue Part 22888 Element 6566892 or 6186378 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Blue Part 3701 Element 370123 ×2
  • Tile 2 x 4 with Groove Blue Part 87079 Element 4654678 or 4560180 ×2

Dark Turquoise 14 pieces

  • Brick 1 x 4 Dark Turquoise Part 3010 Element 6217660 ×2
  • Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs Dark Turquoise Part 48092 Element 6213786 ×8
  • Plate 1 x 2 Dark Turquoise Part 3023 Element 6213777 or 4218493 ×4

Dark Bluish Gray 9 pieces

  • Hinge Plate 3 x 4 Locking Dual 2 Finger, 9 Teeth Dark Bluish Gray Part 44570 Element 4552248 or 4512209 ×1
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Dark Bluish Gray Part 3839b Element 4263176 ×3
  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×2
  • Technic Plate 2 x 8 [7 Holes] Dark Bluish Gray Part 3738 Element 4260707 ×1

Light Bluish Gray 6 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Bluish Gray Part 3660 Element 4211436 ×2
  • Hinge Brick 2 x 4 Locking with 1 Finger on Top at One End Light Bluish Gray Part 18455 Element 6447577 or 6097167 ×2

Dark Purple 5 pieces

  • Plate 4 x 6 Dark Purple Part 3032 Element 6147032 or 6022076 ×2
  • Plate Round 6 x 6 with Hole Dark Purple Part 11213 Element 6377007 or 6216908 ×1
  • Tile 2 x 4 with Groove Dark Purple Part 87079 Element 6167472 ×2

White 5 pieces

  • Plate Special 4 x 4, Studs on One Edge Plain] White Part 6179 Element 6550149 or 617901 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) White Part 18674 Element 6615555 or 6093053 ×2
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×1
  • Tile Round 2 x 2 with Frozen Snowflake Print White Part 14769pr1056 Element 6173108 ×1

Black 4 pieces

  • Dish 3 x 3 Inverted [Radar] Black Part 43898 Element 4180087 ×1
  • Equipment Magnifying Glass with Thick Frame, Solid Handle, Trans-Clear Lens Pattern Black Part 10830pat0001 Element 6012466 ×1
  • Technic Gear Rack 1 x 4 Black Part 3743 Element 6457282 or 4205760 ×2

Dark Azure 4 pieces

  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Dark Azure Part 11153 Element 6151667 ×2
  • Plate 1 x 1 Dark Azure Part 3024 Element 6151664 or 6089779 ×2

Dark Blue 4 pieces

  • Brick Curved 2 x 2, Two Top Studs Dark Blue Part 30165 Element 6175295 ×3
  • Window 1 x 2 x 2 Flat Front Dark Blue Part 60592 Element 6382723 or 6135595 ×1

Trans-Neon Green 4 pieces

  • Cone 1 x 1 [Top Groove] Trans-Neon Green Part 59900 Element 6301321 or 6172230 ×4

Bright Pink 1 piece

  • Tile Round 1 x 1 with Strawberry Print Bright Pink Part 98138pr0017 Element 6287844 or 6055381 ×1

Dark Pink 1 piece

  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Pink Part 18674 Element 6223767 ×1

Medium Azure 1 piece

  • Plate 6 x 8 Medium Azure Part 3036 Element 6097036 ×1

Medium Nougat 1 piece

  • Tile Round 1 x 1 with Animal Track Print Medium Nougat Part 98138pr0056 Element 6287856 or 6152676 ×1

Tan 1 piece

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Yellow 1 piece

  • Tile Round 2 x 2 with Pizza Print Yellow Part 14769pr0011 Element 6102555 ×1

[No Color/Any Color] 1 piece

  • Play Gear, Glasses Mask (Dr. Fox Print) [No Color/Any Color] Part 6237015 ×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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