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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.

Mia's Bedroom

Checking

3939 Mia's Bedroom

83 pieces in 52 part and color combinations, plus 1 minifigure.

The piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

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

White 21 pieces

  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×1
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×3
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top White Part 6091 Element 6285777 or 609101 ×2
  • Brick Curved 2 x 2 with Lip, No Studs White Part 30602 Element 4195869 ×1
  • Cupboard 2 x 3 x 2 with Hollow Studs White Part 92410 Element 4619665 ×1
  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] White Part 87552 Element 6615549 or 4585458 ×2
  • Plate 6 x 6 White Part 3958 Element 6552116 or 4144012 ×1
  • Plate Round Corner 3 x 3 White Part 30357 Element 6550165 or 4550745 ×2
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2
  • Tile 1 x 2 with Letter with Script and Seal Print White Part 3069bpr0055 Element 4119410 ×1
  • Tile 2 x 2 with Musical Score Print White Part 3068bpr0138 Element 6001512 ×1
  • Tile Round 2 x 2 with 'Mia' and Gold Star Print White Part 4150pr0010 Element 6052203 or 6001511 ×1
  • Tile Round 2 x 2 with Bottom Cross White Part 4150 Element 415051 or 415001 ×3

Black 11 pieces

  • Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation Black Part 30361c Element 6450264 or 4194008 ×1
  • Brick Special 1 x 2 with Studs on 2 Sides Black Part 52107 Element 4253815 ×1
  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Black Part 64644 Element 4538456 ×4
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 1 spare in the box ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Tile Special 2 x 2 with Top Pin Black Part 2460 Element 4258354 or 246026 ×1

Medium Azure 9 pieces

  • Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] Medium Azure Part 85080 Element 6176171 or 4655336 ×2
  • Plate 2 x 3 Medium Azure Part 3021 Element 6604733 or 6013828 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Medium Azure Part 87580 Element 6126090 or 6003008 ×4
  • Tile 1 x 4 with Groove Medium Azure Part 2431 Element 4624705 ×2

Bright Pink 7 pieces

  • Brick Curved 1 x 4 x 1 1/3 No Studs, Lowered Inside Support Bright Pink Part 6191 Element 4599830 ×2
  • Cupboard 2 x 3 Drawer Bright Pink Part 4536 Element 4599534 ×1
  • Plate 1 x 2 Bright Pink Part 3023 Element 4654128 or 4245303 ×2
  • Plate Round Corner 3 x 3 Bright Pink Part 30357 Element 6629440 or 4620318 ×2

Magenta 6 pieces

  • Book 2 x 3 [Plain] Magenta Part 33009 Element 4243784 ×1
  • Brick Curved 1 x 4 x 1 1/3 No Studs, Lowered Inside Support Magenta Part 6191 Element 6003009 or 4206406 ×1
  • Cone 1 x 1 [Top Groove] Magenta Part 59900 Element 6003007 ×2
  • Tile 1 x 2 with Groove Magenta Part 3069b Element 4611415 ×2

Orange 6 pieces

  • Brick Round 2 x 2 with Axle Hole Orange Part 3941 Element 4141089 ×1
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×2
  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×3

Light Bluish Gray 4 pieces

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Light Bluish Gray Part 48336 Element 4244627 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×2

Tan 4 pieces

  • Bar 4L (Lightsaber Blade / Wand) Tan Part 30374 Element 6116614 or 4508646 ×2
  • Plate 2 x 8 Tan Part 3034 Element 4113988 or 303405 ×1
  • Plate 4 x 6 Tan Part 3032 Element 4114001 ×1

Dark Bluish Gray 3 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 1 spare in the box ×2
  • Leg Skeleton / Dementor Stand Dark Bluish Gray Part 48457 Element 4603212 ×1

Red 3 pieces

  • Plant, Flower - Small Red Part 3742 1 spare in the box ×3

Trans-Clear 3 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Clear Part 4740 Element 6514246 or 6245306 ×1
  • Minifig Head [Plain] [Hollow Stud] Trans-Clear Part 3626c Element 6001655 ×1
  • Plate 1 x 2 Trans-Clear Part 3023 Element 6514001 or 6240204 ×1

Yellow 2 pieces

  • Dish 2 x 2 Inverted [Radar] Yellow Part 4740 Element 4169960 or 4107622 ×2

Bright Light Orange 1 piece

  • Bag / Basket Bright Light Orange Part 93092 Element 6096091 or 4621637 ×1

Green 1 piece

  • Plant, Flower Stem Green Part 3741 Element 6277589 or 374128 1 spare in the box ×1

Metallic Silver 1 piece

  • Tile Special 1 x 2 Grille with Bottom Groove Metallic Silver Part 2412b Element 6051422 or 4579833 ×1

Trans-Yellow 1 piece

  • Cone 1 x 1 [Top Groove] Trans-Yellow Part 59900 Element 6514022 or 6337597 ×1

Minifigures 1 figure

  • Mia - Light Aqua Top, Bright Pink Skirt Minifigure, checked as a whole figure ×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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