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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.

Leo's Room

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41754 Leo's Room

195 pieces in 116 part and color combinations, plus 2 minifigures.

The official piece count includes the 8 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 44 pieces

  • Animal, Cat, Chubby with Orange Spots, Olive Green Eyes, Grumpy Print (Churro) White Part 2652pr0001 Element 6435013 or 6428858 ×1
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×1
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top White Part 6091 Element 6285777 or 609101 ×2
  • Brick Curved 1 x 3 x 2 Inverted [Inside Bow] White Part 18653 Element 6110019 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×2
  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] White Part 60475b Element 6321349 or 4533763 ×1
  • Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×1
  • Cupboard 2 x 3 x 2 Door White Part 4533 Element 4261470 or 4248214 ×1
  • Cupboard 2 x 3 x 2 with Hollow Studs White Part 92410 Element 4619665 ×1
  • Equipment Dish / Bowl [Plain] White Part 34172 Element 6474222 or 6198979 1 spare in the box ×1
  • Equipment Flotation Ring [Life Preserver] White Part 30340 Element 4297083 ×1
  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 White Part 64644 Element 6615569 or 6070327 ×6
  • Fence Spindled 1 x 4 x 2 [4 Top Studs] White Part 15332 Element 6615529 or 6047813 ×2
  • Hat, Chef / Baker White Part 3898 Element 6452529 or 6174310 ×1
  • Panel 1 x 2 x 1 with Rounded Corners and 2 Sides White Part 23969 Element 6248490 or 6135529 ×1
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×3
  • Plate Round 1 x 1 Swirled Top / Poo White Part 53119 Element 6438901 or 6292800 1 spare in the box ×1
  • Plate Special 1 x 1 Rounded with Handle White Part 26047 Element 6564914 or 6174937 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×2
  • Plate Special 2 x 8 with Door Rail White Part 30586 Element 4500878 or 3058601 ×2
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) White Part 18674 Element 6615555 or 6093053 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×3
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×1
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×2
  • Tile Round 3 x 3 White Part 67095 Element 6300017 ×1
  • Tile Special 1 x 1 with Clip with Rounded Edges White Part 15712 Element 6348055 or 6054551 ×1

Dark Turquoise 35 pieces

  • Brick 1 x 1 Dark Turquoise Part 3005 Element 6236772 or 6213776 ×6
  • Brick 1 x 2 Dark Turquoise Part 3004 Element 6217659 or 4121500 ×7
  • Brick 1 x 6 Dark Turquoise Part 3009 Element 6396079 ×5
  • Brick Arch 1 x 3 x 3 [Gothic] Dark Turquoise Part 13965 Element 6293302 ×2
  • Brick Round 1 x 1 Open Stud Dark Turquoise Part 3062b Element 6325955 ×1
  • Minifig Footwear Flipper [Thick] Dark Turquoise Part 10190 Element 6342088 ×2
  • Plate 1 x 1 Dark Turquoise Part 3024 Element 6213778 or 4121555 1 spare in the box ×3
  • Plate 1 x 6 Dark Turquoise Part 3666 Element 6291782 ×2
  • Plate 2 x 6 Dark Turquoise Part 3795 Element 6259794 or 4121503 ×1
  • Plate Round 1 x 1 with Solid Stud Dark Turquoise Part 6141 Element 6325978 1 spare in the box ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Turquoise Part 15573 Element 6210399 ×3
  • Tile 1 x 3 Dark Turquoise Part 63864 Element 6213787 ×2

Orange 20 pieces

  • Brick 1 x 2 x 2 with Inside Stud Holder Orange Part 3245c Element 6078590 or 4545311 ×3
  • Brick Round 1 x 1 Open Stud Orange Part 3062b Element 6220715 or 6039213 ×2
  • Helmet Classic, New Mold 2019 Orange Part 50665 Element 6295184 ×1
  • Minidoll Neckwear Life Jacket Orange Part 24184 Element 6136310 1 spare in the box ×1
  • Plate 1 x 4 Orange Part 3710 Element 4118782 ×3
  • Plate 2 x 2 Orange Part 3022 Element 4613982 or 4159007 ×1
  • Plate 2 x 2 Corner Orange Part 2420 Element 6106027 or 4513271 ×1
  • Sports Soccer / Basket Ball [Plain] Orange Part 72824 Element 6261264 or 6023209 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Orange Part 3700 Element 6136553 or 4160555 ×4
  • Tile 1 x 8 with Groove Orange Part 4162 Element 6343067 or 4160588 ×1
  • Tile 2 x 4 with Groove Orange Part 87079 Element 4648853 ×2

Yellow 20 pieces

  • Brick Round 1 x 1 Open Stud Yellow Part 3062b Element 306844 or 306224 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Yellow Part 3747b Element 4500459 or 374724 ×1
  • Brick Special 1 x 1 with Stud on 1 Side Yellow Part 87087 Element 4624985 ×2
  • Door Frame 1 x 4 x 6 Type 2 Yellow Part 60596 Element 6262947 or 4561507 ×2
  • Plate 2 x 8 Yellow Part 3034 Element 303424 ×1
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×4
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Yellow Part 88072 Element 6261356 or 4611704 ×1
  • Plate Special 1 x 2 with Clip Horizontal on Side Yellow Part 11476 Element 6313121 or 6179329 ×1
  • Plate Special 1 x 2 with Door Rail Yellow Part 32028 Element 4141630 ×3
  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×2
  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×1

Black 14 pieces

  • Bar 3L Black Part 87994 Element 6185316 or 6093525 1 spare in the box ×1
  • Bracket 1 x 1 - 1 x 1 Inverted Black Part 36840 Element 6234695 ×1
  • Bracket 1 x 2 - 2 x 2 Inverted Black Part 99207 Element 6000650 ×1
  • Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 ×1
  • Equipment Whip - Bent Black Part 88704 Element 6359865 or 6092878 1 spare in the box ×1
  • Fence Lattice 1 x 4 x 2 Black Part 3185 Element 4188953 or 4106485 ×1
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×2
  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×2
  • Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders Black Part 24122 Element 6280097 or 6155068 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Black Part 18674 Element 6195325 ×1
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×1
  • Tile 1 x 2 with Smart Phone, Icons Print Black Part 3069bpr0189 Element 6329698 ×1

Medium Nougat 14 pieces

  • Brick 1 x 3 Medium Nougat Part 3622 Element 6192922 or 4569536 ×2
  • Brick 1 x 6 Medium Nougat Part 3009 Element 6099341 or 4569381 ×1
  • Brick 2 x 4 Medium Nougat Part 3001 Element 6135191 or 4645064 ×1
  • Brick Special 1 x 2 Palisade [aka Log] Medium Nougat Part 30136 Element 4651231 ×3
  • Panel 1 x 2 x 1 [Rounded Corners] Medium Nougat Part 4865b Element 6226646 ×1
  • Plate 1 x 6 Medium Nougat Part 3666 Element 6295464 ×1
  • Plate 2 x 4 Medium Nougat Part 3020 Element 6093494 or 4645061 ×1
  • Plate 2 x 6 Medium Nougat Part 3795 Element 6313600 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Medium Nougat Part 15573 Element 6292154 or 6218364 ×2
  • Tile Round 1 x 1 with Animal Track Print Medium Nougat Part 98138pr0056 Element 6287856 or 6152676 1 spare in the box ×1

Coral 10 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Coral Part 87580 Element 6287638 ×2
  • Tile 1 x 2 with Groove Coral Part 3069b Element 6258566 ×4
  • Tile 1 x 6 with Groove Coral Part 6636 Element 6425367 or 6258096 ×4

Tan 10 pieces

  • Bracket 1 x 1 - 1 x 2 Tan Part 79389 Element 6374151 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Tan Part 85984 Element 4624086 ×1
  • Brick Sloped 45° 2 x 1 Triple with Inside Stud Holder Tan Part 15571 Element 6312460 ×2
  • Plate 1 x 1 Tan Part 3024 Element 4159553 or 302405 1 spare in the box ×2
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×1
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×1
  • Plate 4 x 8 Tan Part 3035 Element 4509897 or 4191103 ×1
  • Plate 8 x 16 Tan Part 92438 Element 4609726 ×1

Lime 9 pieces

  • Book Binding with Two Studs Lime Part 24324 Element 6258352 ×1
  • Book Cover [Plain] Lime Part 24093 Element 6258353 ×1
  • Equipment Camera Handheld with Central Viewfinder Lime Part 30089b Element 6476482 or 6185108 ×1
  • Plant, Plate 1 x 1 Round with 3 Leaves Lime Part 32607 Element 6286831 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Lime Part 35480 Element 6264062 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Lime Part 15573 Element 6092592 ×2
  • Sports Surfboard Standard Lime Part 90397 Element 6102906 ×1
  • Technic Ball Joint Lime Part 32474 Element 4624381 or 4290718 ×1

Yellowish Green 5 pieces

  • Animal, Fish [Hollow Stud Mouth] Yellowish Green Part 64648 Element 6291414 ×1
  • Tile Round 2 x 2 with Bottom Stud Holder Yellowish Green Part 14769 Element 6424480 or 6113047 ×2
  • Tile Special Round 1 x 1 with Hollow Bar Yellowish Green Part 20482 Element 6223506 1 spare in the box ×2

Dark Brown 4 pieces

  • Plate 1 x 1 Dark Brown Part 3024 Element 6194729 or 6013830 1 spare in the box ×4

Trans-Clear 3 pieces

  • Equipment Stein/Cup with Trans-Orange Drink Pattern Trans-Clear Part 68495pat0001 Element 6514376 or 6306748 ×1
  • Glass for Window 1 x 4 x 6 Trans-Clear Part 57895 Element 6581671 or 6256058 ×2

Bright Pink 1 piece

  • Plate Round 1 x 1 Swirled Top Bright Pink Part 15470 Element 6424008 or 6060795 1 spare in the box ×1

Flat Silver 1 piece

  • Equipment Cutlery - Spoon, Rounded Bottom Flat Silver Part 34173 Element 6460705 or 6196796 1 spare in the box ×1

Red 1 piece

  • Plant, Flower, Minifig Accessory with 7 Thick Petals and Pin Red Part 32606 Element 6182260 1 spare in the box ×1

Trans-Dark Blue 1 piece

  • Tile Round 1 x 1 Trans-Dark Blue Part 98138 Element 6514190 or 6273627 1 spare in the box ×1

Trans-Light Blue 1 piece

  • Headwear Accessory Visor / Diver's Mask Trans-Light Blue Part 30090 Element 6244761 or 4569133 ×1

Trans-Yellow 1 piece

  • Tile Round 1 x 1 Trans-Yellow Part 98138 Element 6514193 or 6274740 1 spare in the box ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 41754-1 [No Color/Any Color] Part 10101078 Element 6416434 ×1

Minifigures 2 figures

  • Olly - White Top, Sand Blue Legs Minifigure, checked as a whole figure ×1
  • Leo - White/Coral Top, Dark Turquoise Pants 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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