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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.

Space Mining Mech

Checking

31115 Space Mining Mech

327 pieces in 91 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Plates Special 103 pieces

  • Plate Special 1 x 2 with Clip Horizontal on End Black Part 63868 Element 6336989 or 4535739 ×2
  • Bracket 1 x 2 - 1 x 2 Bright Light Yellow Part 99781 Element 6296497 ×8
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Dark Bluish Gray Part 61252 Element 6360111 or 4579354 ×18
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×4
  • Plate Special 1 x 2 with 5.9mm Towball Socket and Towball Dark Bluish Gray Part 14419 Element 6414554 or 6338166 ×2
  • Plate Special 1 x 1 with Tooth Flat Silver Part 49668 Element 4625146 ×8
  • Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs Flat Silver Part 75937 Element 6020990 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Green Part 99780 Element 6099243 ×1
  • Plate Special 1 x 1 Rounded with Handle Green Part 26047 Element 6253140 ×4
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×12
  • Plate Special 1 x 1 Rounded with Handle Light Bluish Gray Part 26047 Element 6225246 ×6
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×4
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×2
  • Plate Special 1 x 2, Top Clip [Open O] Light Bluish Gray Part 44861 Element 6326078 ×6
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Tan Part 41740 Element 6257600 ×5
  • Bracket 1 x 2 - 1 x 2 Inverted White Part 99780 Element 6548278 or 6070698 ×8
  • Bracket 1 x 2 - 2 x 2 White Part 44728 Element 6619296 or 6117940 ×6
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×5

Plates 46 pieces

  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate 1 x 2 Dark Blue Part 3023 Element 6554191 or 4528981 ×5
  • Plate 2 x 2 Dark Blue Part 3022 Element 6037890 or 4528982 ×2
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 ×2
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×2
  • Plate 1 x 2 Green Part 3023 Element 302328 ×1
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×5
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×4
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×2
  • Plate 1 x 6 Orange Part 3666 Element 4173332 or 4122466 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×5
  • Plate 1 x 2 Trans-Dark Pink Part 3023 Element 6514008 or 6240228 ×1
  • Plate 1 x 2 Trans-Neon Green Part 3023 Element 6240224 or 6102038 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×3
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×8

Tiles 28 pieces

  • Tile 2 x 2 with Groove Dark Blue Part 3068b Element 4205004 ×2
  • Tile 1 x 6 with Groove Orange Part 6636 Element 4650690 or 4524966 ×1
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×8
  • Tile 1 x 6 with Groove White Part 6636 Element 6548296 or 663601 ×4
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×12
  • Tile 2 x 4 with Groove Yellow Part 87079 Element 6388490 or 4560181 ×1

Bricks Sloped 26 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box ×8
  • Brick Sloped 30° 1 x 2 x 2/3 Tan Part 85984 Element 4624086 ×6
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Bright Green Part 54200 Element 6302010 or 6245304 1 spare in the box ×4
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud White Part 28192 Element 6552164 or 6166894 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
  • Brick Sloped Inverted 45° 6 x 2 Double with 2 x 4 Recessed White Part 22889 Element 6131572 ×2

Technic Special 15 pieces

  • Technic Brick Special 2 x 2 with Pin Hole, with 2 Rotation Joint Sockets Black Part 48172 Element 6296186 or 4275826 ×1
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side] Dark Bluish Gray Part 48171 Element 6492115 or 6343337 ×6
  • Technic Plate Rotor 3 Blade with Smooth Ends, 6 Studs, 1 Bottom Ridge (Propeller) Light Bluish Gray Part 51138 Element 6307999 ×4
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Socket White Part 48169 Element 6328452 or 4218483 ×4

Bricks Round and Cones 14 pieces

  • Brick Round 2 x 2 Dome Bottom [Open Stud] Black Part 15395 Element 6102341 ×2
  • Cone 1 1/2 x 1 1/2 x 2/3 Black Part 33492 Element 6199468 ×2
  • Cone 1 x 1 Inverted with Bar at Bottom (Ice Cream Cone) Black Part 11610 Element 6538443 or 6056234 ×2
  • Brick Round 2 x 2 with Axle Hole Light Bluish Gray Part 3941 Element 4211526 ×6
  • Brick Round 1 x 1 Open Stud Trans-Light Blue Part 3062b Element 6514238 or 6238677 ×2

Plates Round Curved and Dishes 14 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×9
  • Plate Special 1 x 2 Rounded with 2 Open Studs Lime Part 35480 Element 6264062 ×1
  • Plate Round Corner 4 x 4 Tan Part 30565 Element 4570516 or 4295315 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×2

Bars, Ladders and Fences 12 pieces

  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Black Part 58176 Element 6174075 or 6070376 1 spare in the box ×4
  • Bar 2L with Towball Dark Bluish Gray Part 22484 Element 6364352 or 6360117 ×4
  • Bar Holder with Clip Dark Bluish Gray Part 11090 Element 6336970 or 6015890 ×4

Bricks Special 12 pieces

  • Brick Special 1 x 2 with Studs on 2 Sides Black Part 52107 Element 4253815 ×2
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Dark Pink Part 22885 Element 6132426 ×1
  • Brick Special 1 x 2 Palisade [aka Log] White Part 30136 Element 6552148 or 6059185 ×9

Bricks Curved 10 pieces

  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End White Part 47457 Element 4494474 ×2
  • Brick Curved 4 x 1 Double, No Studs White Part 93273 Element 6552143 or 6023806 ×1
  • Brick Curved Inverted 2 x 2 x 2/3 White Part 32803 Element 6210385 ×1
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Yellow Part 6091 Element 6388492 or 6361082 ×6

Bricks 9 pieces

  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 ×2
  • Brick 1 x 2 without Bottom Tube Trans-Bright Green Part 3065 Element 6514269 or 6244911 ×3
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2
  • Brick 1 x 3 Yellow Part 3622 Element 362224 ×2

Technic Pins 9 pieces

  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×2
  • Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Black Part 47455 Element 4272426 or 4213374 ×6
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Tiles Round and Curved 8 pieces

  • Tile Round 2 x 2 with Bottom Stud Holder Orange Part 14769 Element 6092770 ×1
  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×2
  • Tile Round 1 x 1 Trans-Orange Part 98138 Element 6514197 or 6274747 1 spare in the box ×3
  • Tile Round 1 x 1 with Squinted Eye, Center Side Pupil Print White Part 98138pr0083 Element 6329648 1 spare in the box ×2

Tiles Special 8 pieces

  • Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Flat Silver Part 2412b Element 4619636 ×2
  • Tile Special 2 x 3 Pentagonal White Part 22385 Element 6550174 or 6245249 ×2
  • Tile Special 1 x 2 with Two Vertical Teeth / Tooth Yellowish Green Part 15209 Element 6267419 or 6109486 ×2

Plates Wedged 6 pieces

  • Wedge Plate 2 x 2 Cut Corner White Part 26601 Element 6552166 or 6550160 ×2
  • Wedge Plate 4 x 2 Left White Part 41770 Element 6552119 or 4161326 ×2
  • Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×2

Technic Bricks 3 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Orange Part 3700 Element 6136553 or 4160555 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] White Part 3702 Element 4582543 or 370201 ×1

Windscreens and Fuselage 3 pieces

  • Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle Trans-Clear Part 18990 Element 6514145 or 6244781 Also in White ×1
  • Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle White Part 18990 Element 6323446 Also in Trans-Clear ×2

Technic Axles 1 piece

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×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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