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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.

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41839 Message Board

1,743 pieces in 72 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

White 1,038 pieces

  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×8
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top White Part 6091 Element 6285777 or 609101 ×16
  • Brick Curved 1 x 4 x 1 1/3 No Studs White Part 10314 Element 6294284 or 6019727 ×8
  • Brick Round, Curved 2 x 2 x 1 1/3, Corner White Part 67810 Element 6299937 ×16
  • Brick Special 2 x 4 with 3 Axle Holes White Part 39789 Element 6244919 ×4
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×27
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×31
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×6
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×92
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×59
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×22
  • Plate 6 x 8 White Part 3036 Element 303651 or 303601 ×34
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×60
  • Plate Special 1 x 2 with Door Rail White Part 32028 Element 6550168 or 4249563 ×71
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) White Part 34103 Element 6550171 or 6195371 ×8
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] White Part 41740 Element 6249091 ×53
  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×5
  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×8
  • Technic Beam 1 x 9 Thick White Part 40490 Element 6001831 or 4156341 ×14
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×52
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×39
  • Tile 1 x 2 with Stud Notch Left White Part 5091 Element 6510126 or 6477744 ×16
  • Tile 1 x 2 with Stud Notch Right White Part 5092 Element 6510140 or 6477750 ×16
  • Tile 1 x 3 White Part 63864 Element 6552134 or 6548270 ×25
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×16
  • Tile 2 x 2 Corner White Part 14719 Element 6550151 or 6058329 ×77
  • Tile 2 x 2 Curved, Macaroni White Part 27925 Element 6550162 or 6172674 ×45
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×12
  • Tile 2 x 4 with Groove White Part 87079 Element 6548271 or 4560178 ×14
  • Tile 3 x 3 Curved, Macaroni White Part 79393 Element 6564909 or 6373439 ×30
  • Tile 45° Cut 2 x 2 (Triangle) White Part 35787 Element 6550176 or 6217875 ×20
  • Tile Round 1 x 1 White Part 98138 Element 6564903 or 6284572 1 spare in the box ×6
  • Tile Round 1 x 1 Half Circle White Part 24246 Element 6609539 or 6250591 1 spare in the box ×7
  • Tile Round 1 x 1 Quarter White Part 25269 Element 6548285 or 6172366 1 spare in the box ×46
  • Tile Round 1 x 2 Half Circle White Part 1748 Element 6510068 or 6400114 1 spare in the box ×19
  • Tile Round 3 x 3 White Part 67095 Element 6300017 ×12
  • Tile Special Round 2 x 2 with Hole White Part 15535 Element 6310185 ×8
  • Wedge Plate 2 x 4 27° Left White Part 65429 Element 6552187 or 6354823 ×16
  • Wedge Plate 2 x 4 27° Right White Part 65426 Element 6552186 or 6354822 ×20

Dark Tan 310 pieces

  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Dark Tan Part 29120 Element 6258951 ×2
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Dark Tan Part 29119 Element 6258949 ×2
  • Plate 1 x 1 Dark Tan Part 3024 Element 4549436 or 4497084 1 spare in the box ×16
  • Plate 1 x 2 Dark Tan Part 3023 Element 4528604 or 4497082 ×9
  • Plate 2 x 2 Dark Tan Part 3022 Element 6047415 or 4497081 ×14
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Tan Part 15573 Element 6092591 ×14
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Dark Tan Part 34103 Element 6449594 ×10
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Tan Part 87580 Element 6126075 or 4578032 ×6
  • Plate Special 2 x 2 with Only 2 studs Dark Tan Part 33909 Element 6396392 ×28
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Tan Part 18674 Element 6132767 ×2
  • Tile 1 x 1 with Groove Dark Tan Part 3070b Element 6055172 1 spare in the box ×10
  • Tile 1 x 2 with Groove Dark Tan Part 3069b Element 4496699 ×36
  • Tile 1 x 3 Dark Tan Part 63864 Element 6015452 ×27
  • Tile 1 x 4 with Groove Dark Tan Part 2431 Element 6175927 ×27
  • Tile 1 x 6 with Groove Dark Tan Part 6636 Element 4507047 or 4251129 ×36
  • Tile 2 x 2 Corner Dark Tan Part 14719 Element 6398654 ×4
  • Tile 2 x 2 Curved, Macaroni Dark Tan Part 27925 Element 6395753 ×6
  • Tile 2 x 2 with Groove Dark Tan Part 3068b Element 4507045 or 4251986 ×19
  • Tile 2 x 4 with Groove Dark Tan Part 87079 Element 6164288 ×14
  • Tile Round 1 x 1 Dark Tan Part 98138 Element 6322841 1 spare in the box ×6
  • Tile Round 1 x 1 Quarter Dark Tan Part 25269 Element 6362967 or 6242238 1 spare in the box ×20
  • Tile Special 2 x 2 with 2 Quarter Round Cutouts Dark Tan Part 3396 Element 6499868 ×2

Black 137 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×8
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×27
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 2 spares in the box ×102

Dark Bluish Gray 120 pieces

  • Technic Pin 1/2 with Friction Dark Bluish Gray Part 89678 Element 6395635 2 spares in the box ×120

Blue 56 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×56

Light Bluish Gray 54 pieces

  • Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Light Bluish Gray Part 64179 Element 4539880 ×30
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes) Light Bluish Gray Part 65489 Element 6282158 ×24

Lime 26 pieces

  • Plate 1 x 4 Lime Part 3710 Element 4187743 or 4122441 ×8
  • Technic Beam 1 x 7 Thick Lime Part 32524 Element 6308236 or 4495928 ×18

Dark Turquoise 1 piece

  • Brick and Axle Separator v2.0 Dark Turquoise Part 96874 Element 6254100 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 41839-1 [No Color/Any Color] Part 10109649 Element 6502721 ×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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