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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.

Astro Bot

Checking

40899 Astro Bot

276 pieces in 113 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 85 pieces

  • Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] White Part 3484 Element 6439046 ×5
  • Bar, Angled with 1 x 1 Round Plate / Stud on End White Part 65578 Element 6605276 ×4
  • Bracket 1 x 2 - 2 x 2 Inverted White Part 99207 Element 6552151 or 6548279 ×2
  • Brick Curved 1 x 2 x 1 with Curved Top White Part 5841 Element 6552217 or 6519988 ×1
  • Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×2
  • Brick Round 2 x 2 Dome Bottom [Open Stud] White Part 15395 Element 6050914 ×4
  • Brick Round 2 x 2 Truncated Cone White Part 98100 Element 6609536 or 4649167 ×2
  • Brick Round, Curved 2 x 2 x 1, Corner White Part 5846 Element 6519991 ×4
  • Brick Round, Curved Double 3 x 2 Beveled with Stud Notch Left White Part 6822 Element 6611996 or 6592943 ×2
  • Brick Round, Curved Double 3 x 2 Beveled with Stud Notch Right White Part 6823 Element 6612312 or 6592944 ×2
  • Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×4
  • Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side White Part 32952 Element 6552171 or 6548288 ×4
  • Food Hot Dog / Sausage White Part 33078 Element 6550159 or 6518930 ×1
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, without Groove, 7 Teeth White Part 54657 Element 6267044 ×1
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×2
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×2
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 ×5
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×2
  • Plate Round Corner 2 x 2 with 1 x 1 Cutout White Part 79491 Element 6564910 or 6499714 ×4
  • Plate Round Corner 3 x 3 White Part 30357 Element 6550165 or 4550745 ×4
  • Plate Special 1 x 1 with Handle on 2 Ends White Part 78257 Element 6431329 ×2
  • Plate Special 1 x 2 Rounded with 2 Open Studs White Part 35480 Element 6552167 or 6550175 ×3
  • Plate Special 1 x 3 Rounded with 3 Open Studs White Part 77850 Element 6550184 or 6450820 ×4
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) White Part 34103 Element 6550171 or 6195371 ×6
  • Plate Special 1 x 4 Rounded with 2 Open Studs White Part 77845 Element 6548295 or 6501816 ×2
  • Tile 1 x 3 White Part 63864 Element 6552134 or 6548270 ×2
  • Tile 2 x 2 Curved, Macaroni White Part 27925 Element 6550162 or 6172674 ×4
  • Tile 2 x 3 White Part 26603 Element 6552162 or 6550161 ×2
  • Tile Round 1 x 1 Half Circle White Part 24246 Element 6609539 or 6250591 ×2
  • Tile Round 3 x 3 White Part 67095 Element 6300017 ×1

Black 60 pieces

  • Bracket 1 x 1 - 1 x 2 Inverted Black Part 73825 Element 6335317 ×6
  • Brick 1 x 1 Black Part 3005 Element 300526 ×6
  • Brick 1 x 4 Black Part 3010 Element 301026 ×2
  • Brick Curved 1 x 2 x 1 with Curved Top Black Part 5841 Element 6542614 ×4
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Black Part 11477 Element 6047276 ×4
  • Brick Curved 2 x 2 x 2/3 Black Part 15068 Element 6053077 ×2
  • Brick Round Corner, Curved 2 x 2 x 2/3 Quarter Circle With 1 x 1 Bottom Cutout Black Part 5852 Element 6562635 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 ×2
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends [No Side Slots] Black Part 53923 Element 6265699 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×5
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Black Part 15573 Element 6092585 ×3
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Black Part 60470b Element 6310268 or 4556158 ×1
  • Technic Axle Connector 5L with One Side Frictionless Black Part 5443 Element 6546682 ×1
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×1
  • Technic Beam 1 x 2 with Ball Joint Holes in Ball Black Part 67697 Element 6338171 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Black Part 32064a Element 6178922 or 4233487 ×1
  • Technic Bush Black Part 3713 Element 6332148 or 6210506 ×3
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 ×1
  • Tile 1 x 3 Black Part 63864 Element 4558170 ×1
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×3

Blue 53 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×6
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Blue Part 11477 Element 6055065 ×2
  • Brick Curved 2 x 2 x 2/3 Blue Part 15068 Element 6116786 ×3
  • Brick Curved 3 x 1 No Studs Blue Part 50950 Element 4543998 ×1
  • Brick Curved 3 x 2 No Studs Blue Part 24309 Element 6198025 ×4
  • Brick Round Corner, Curved 2 x 2 x 2/3 Quarter Circle With 1 x 1 Bottom Cutout Blue Part 5852 Element 6584955 ×2
  • Brick Round Corner, Curved 3 x 3 x 1 Quarter Circle Blue Part 76797 Element 6441096 ×8
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×4
  • Dish 2 x 2 Inverted [Radar] Blue Part 4740 Element 4570283 or 4239188 ×4
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×1
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 ×5
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Blue Part 4032a Element 403223 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Blue Part 48336 Element 4514398 or 4247103 ×1
  • Plate Special 1 x 3 Rounded with 3 Open Studs Blue Part 77850 Element 6537694 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Blue Part 87580 Element 6126049 or 4565319 ×1
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1
  • Tile 1 x 1 with Groove Blue Part 3070b Element 4206330 or 307073 ×2
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×1
  • Tile 2 x 3 with White 'ASTRO BOT' Print Blue Part 26603pr0140 Element 6639175 ×1
  • Tile 3 x 3 Curved, Macaroni Blue Part 79393 Element 6617079 ×2

Light Bluish Gray 24 pieces

  • Brick Round Curved 1 x 1 x 1 Quarter Dome Light Bluish Gray Part 5848 Element 6605331 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Light Bluish Gray Part 11211 Element 6015344 ×2
  • Cone 1 1/2 x 1 1/2 x 2/3 Light Bluish Gray Part 33492 Element 6254404 ×2
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×1
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×4
  • Plate 3 x 3 Light Bluish Gray Part 11212 Element 6015347 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Light Bluish Gray Part 60897 Element 6296894 or 4613956 ×6
  • Plate Special Round 1 x 2 Half Circle with Stud (Jumper) Light Bluish Gray Part 1745 Element 6510058 or 6420741 ×2

Medium Azure 11 pieces

  • Plate 1 x 2 Medium Azure Part 3023 Element 6603337 or 6097419 ×2
  • Plate 2 x 2 Medium Azure Part 3022 Element 6603309 or 4625032 ×1
  • Plate 2 x 4 Medium Azure Part 3020 Element 6603317 or 6013826 ×3
  • Tile Round 1 x 1 Medium Azure Part 98138 Element 6322819 ×1
  • Tile Round 1 x 2 Half Circle Medium Azure Part 1748 Element 6510074 or 6445337 ×2
  • Tile Round 2 x 2 with Bottom Stud Holder Medium Azure Part 14769 Element 6145255 ×2

Trans-Light Blue 9 pieces

  • Bar 4L (Lightsaber Blade / Wand) Trans-Light Blue Part 30374 Element 6507882 or 6170187 ×2
  • Cone 1 x 1 [Top Groove] Trans-Light Blue Part 59900 Element 6514027 or 6337639 ×2
  • Plate Round 1 x 1 with Open Stud Trans-Light Blue Part 85861 Element 6510163 or 6283590 ×2
  • Tile Round 1 x 1 Trans-Light Blue Part 98138 Element 6514192 or 6274739 ×2
  • Windscreen 6 x 2 x 2 with Handle Trans-Light Blue Part 92474 Element 6514176 or 6244795 ×1

Yellow 8 pieces

  • Brick Special 1 x 1 with Stud on 1 Side Yellow Part 87087 Element 4624985 ×2
  • Brick Special 1 x 2 Rounded with Center Bars Yellow Part 77808 Element 6529612 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×2
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×1
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×1

Dark Bluish Gray 6 pieces

  • Brick Special 1 x 2 Rounded with Center Bars Dark Bluish Gray Part 77808 Element 6510213 or 6390673 ×2
  • Plate 4 x 4 Dark Bluish Gray Part 3031 Element 4243831 or 4211089 ×1
  • Plate Round 1 x 1 with Open Stud Dark Bluish Gray Part 85861 Element 6231765 ×2
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes Dark Bluish Gray Part 67696 Element 6338291 ×1

Dark Pink 5 pieces

  • Plate Round 1 x 1 with Solid Stud Dark Pink Part 6141 Element 6195315 or 4243576 ×5

Red 4 pieces

  • Bar 2L with Stop in Center Red Part 78258 Element 6399645 ×2
  • Technic Axle 10 Red Part 3737 Element 6130005 or 4267858 ×1
  • Tile Round 1 x 1 Red Part 98138 Element 6284574 or 6063445 ×1

Tan 3 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Tan Part 2412b Element 4124456 or 393305 ×3

Lime 2 pieces

  • Plate 2 x 2 Lime Part 3022 Element 4613977 or 4537937 ×2

Sand Green 2 pieces

  • Technic Brick 1 x 1 with Axle Hole Sand Green Part 73230 Element 6359069 ×2

Bright Green 1 piece

  • Tile Round 1 x 1 Bright Green Part 98138 Element 6353793 ×1

Bright Pink 1 piece

  • Tile Round 1 x 1 Bright Pink Part 98138 Element 6284587 or 6055380 ×1

Dark Azure 1 piece

  • Technic Ball Joint Dark Azure Part 32474 Element 6412745 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 40899-1 [No Color/Any Color] Part 10119089 Element 6630767 ×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.

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