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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.

Aliya's Baby Sister's Playroom

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42645 Aliya's Baby Sister's Playroom

115 pieces in 76 part and color combinations, plus 3 minifigures.

The official piece count includes the 10 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

Yellow 28 pieces

  • Animal, Bird, Duck / Duckling with Orange Beak Print Yellow Part 49661pr0004 Element 6258021 ×1
  • Bracket 1 x 1 - 1 x 1 Inverted Yellow Part 36840 Element 6329867 ×1
  • Bracket 1 x 2 - 1 x 2 Inverted Yellow Part 99780 Element 6057458 ×2
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×1
  • Brick 1 x 2 x 2 with Inside Stud Holder Yellow Part 3245c Element 4121625 ×1
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×2
  • Brick Arch 1 x 4 Yellow Part 3659 Element 6310246 or 4280126 ×1
  • Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs Yellow Part 49307 Element 6394524 ×3
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Yellow Part 6091 Element 6388492 or 6361082 ×1
  • Brick Curved Inverted 4 x 1 Yellow Part 13547 Element 6146298 ×1
  • Plate 1 x 1 Yellow Part 3024 Element 302424 1 spare in the box ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×2
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×1
  • Plate Special 1 x 2 with Pin Hole on Top Yellow Part 11458 Element 6344181 ×1
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Yellow Part 41740 Element 6257598 ×2
  • Tile Round 1 x 1 Yellow Part 98138 Element 6284577 or 6070714 1 spare in the box ×4

Orange 18 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted Orange Part 99207 Element 6061676 ×3
  • Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs Orange Part 49307 Element 6278436 ×1
  • Brick Round Corner 3 x 3 x 1 No Studs Orange Part 65617 Element 6415898 ×4
  • Brick Sloped 45° 2 x 2 Orange Part 3039 Element 4118828 ×1
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×2
  • Plate 2 x 2 Orange Part 3022 Element 4613982 or 4159007 ×1
  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×3
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Orange Part 34103 Element 6441100 ×2
  • Tile 2 x 2 with Groove Orange Part 3068b Element 4542142 or 4125268 ×1

White 16 pieces

  • Fence Lattice 1 x 4 x 1 White Part 3633 Element 4550171 or 363301 ×1
  • Flag 2 x 2 Square, Flared Clip Edge [Thick Clips] White Part 80326 Element 6365487 ×1
  • Panel 1 x 4 x 3 [Side Supports / Hollow Studs] White Part 60581 Element 6615548 or 4558208 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] White Part 61252 Element 6347293 or 4538353 ×1
  • Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1L White Part 32828 Element 6550170 or 6449593 1 spare in the box ×1
  • Pneumatic T-Piece (T Bar) [New Style] White Part 4697b Element 6615553 or 6289866 1 spare in the box ×1
  • Tile 4 x 4 White Part 1751 Element 6400128 ×1
  • Tile Round 1 x 1 with Offset Black Eye Print White Part 98138pr0008 Element 6284599 or 6029156 1 spare in the box ×4
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×4

Bright Green 11 pieces

  • Brick Curved 3 x 2 No Studs Bright Green Part 24309 Element 6462433 ×1
  • Plant, Flower, Minifig Accessory with 7 Thick Petals and Pin, Center Ring Bright Green Part 4367 Element 6488792 1 spare in the box ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Bright Green Part 15573 Element 6314378 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Bright Green Part 18674 Element 6380676 ×1
  • Tile Round 1 x 1 Bright Green Part 98138 Element 6353793 1 spare in the box ×5
  • Wheel Skateboard / Trolley Bright Green Part 2496 Element 6334178 ×2

Dark Azure 9 pieces

  • Brick 1 x 1 Dark Azure Part 3005 Element 6225538 or 6088654 ×1
  • Brick 1 x 1 x 3 Dark Azure Part 14716 Element 6420725 ×1
  • Brick 1 x 2 Dark Azure Part 3004 Element 6004943 ×1
  • Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs Dark Azure Part 48092 Element 6225542 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Azure Part 3040b Element 6036851 ×1
  • Plate 1 x 2 Dark Azure Part 3023 Element 4653988 ×1
  • Plate 2 x 3 Dark Azure Part 3021 Element 6144149 or 6089837 ×1
  • Plate Round Corner 5 x 5 with 4 x 4 Round Cutout Dark Azure Part 80015 Element 6365941 ×1
  • Pram / Stroller Dark Azure Part 5491 Element 6471940 ×1

Medium Azure 9 pieces

  • Plate 1 x 4 Medium Azure Part 3710 Element 6603965 or 6070757 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Medium Azure Part 60897 Element 6445843 ×1
  • Tile 1 x 2 with Groove Medium Azure Part 3069b Element 6603315 or 4649741 ×2
  • Tile 1 x 6 with Groove Medium Azure Part 6636 Element 6603342 or 6185309 ×1
  • Tile Round 1 x 1 Medium Azure Part 98138 Element 6322819 1 spare in the box ×4

Bright Pink 7 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Bright Pink Part 87580 Element 6251842 ×1
  • Tile 1 x 4 with Groove Bright Pink Part 2431 Element 4621552 ×1
  • Tile Round 1 x 1 Bright Pink Part 98138 Element 6284587 or 6055380 1 spare in the box ×4
  • Tile Round 1 x 2 Bright Pink Part 1126 Element 6507796 or 6494543 ×1

Lime 3 pieces

  • Headwear Accessory Hat with Small Pin, Cap Lime Part 6913 Element 6509777 1 spare in the box ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Lime Part 4032a Element 6314224 or 4213047 ×2

Red 3 pieces

  • Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs Red Part 49307 Element 6278441 ×1
  • Hat / Cap Short Curved Bill with Seams and Hole on Top Red Part 11303 Element 6032178 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Red Part 15573 Element 6092565 ×1

Lavender 2 pieces

  • Plate 1 x 2 Lavender Part 3023 Element 6099190 or 6015122 ×1
  • Plate 8 x 16 Lavender Part 92438 Element 6133814 ×1

Light Bluish Gray 2 pieces

  • Handlebars with Angular Handles Light Bluish Gray Part 98397 Element 4644102 ×1
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×1

Trans-Light Blue 2 pieces

  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Trans-Light Blue Part 87544 Element 6507951 or 6239391 ×1
  • Panel 4 x 4 x 3 Quarter Cylinder Trans-Light Blue Part 4041 Element 6510115 or 6444526 ×1

Bright Light Orange 1 piece

  • Pillow Plush Toy with Black Stripes, Orange Eyes, White Chest Print Bright Light Orange Part 6330pr0003 Element 6520141 ×1

Flat Silver 1 piece

  • Equipment Cutlery - Spoon, Flat Bottom Flat Silver Part 80179 Element 6363148 1 spare in the box ×1

Light Aqua 1 piece

  • Equipment Baby Bottle with Handle Light Aqua Part 18855 Element 6412881 or 6102882 ×1

Tan 1 piece

  • Brick Special 1 x 1 with Studs on 2 Sides Tan Part 47905 Element 4213568 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42645-1 [No Color/Any Color] Part 10110444 Element 6520988 ×1

Minifigures 3 figures

  • Aliya - Coral Top, Medium Azure Pants Minifigure, checked as a whole figure ×1
  • Amalia Minifigure, checked as a whole figure ×1
  • Liann - White Top, Bright Light Orange 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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