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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.

Mickey Mouse & Minnie Mouse's Space Rocket

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10774 Mickey Mouse & Minnie Mouse's Space Rocket

81 pieces in 56 part and color combinations, plus 2 minifigures.

The official piece count includes the 7 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

Bricks Sloped 11 pieces

  • Brick Sloped 45° 2 x 2 Dark Blue Part 3039 Element 4153653 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 with Dashboard, Speedometers Print Light Bluish Gray Part 85984pr0021 Element 6329152 ×1
  • Brick Sloped 45° 2 x 3 Red Part 3038 Element 6303213 or 4195081 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×1
  • Brick Sloped 45° 2 x 4 White Part 3037 Element 6552102 or 303701 ×1

Bricks Round and Cones 10 pieces

  • Brick Round 4 x 4 Centre Hole Dark Bluish Gray Part 87081 Element 4558959 ×1
  • Brick Round 2 x 2, Pin Holes Light Bluish Gray Part 17485 Element 6372076 or 6078985 ×1
  • Brick Round 2 x 2 Dome Top with Dark Green Spots, Eye, Tongue Print Lime Part 30367cpr1023 Element 6342609 ×1
  • Brick Round 4 x 4 with Recessed Center Red Part 68325 Element 6313597 ×1
  • Brick Round 2 x 2 Dome Top, Hollow Stud Trans-Light Blue Part 30367c Element 6507968 or 6264989 ×1
  • Brick Round 2 x 2 with Axle Hole Trans-Orange Part 3941 Element 6514283 or 6273154 ×2
  • Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×2
  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×1

Bricks Curved 9 pieces

  • Brick Curved 4 x 1 Double, No Studs Light Bluish Gray Part 93273 Element 4622803 ×1
  • Brick Curved 1 x 2 x 1 No Studs Red Part 37352 Element 6252037 ×3
  • Brick Curved 6 x 2 Red Part 44126 Element 6347779 or 4180544 ×3
  • Brick Curved 3 x 1 No Studs White Part 50950 Element 6548268 or 4249112 ×2

Plates Special 9 pieces

  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Bluish Gray Part 18674 Element 6115080 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Lime Part 15573 Element 6092592 ×2
  • Bracket 1 x 2 - 2 x 2 Inverted Red Part 99207 Element 6001806 ×1
  • Plate Special 1 x 2, Top Clip [Open O] White Part 44861 Element 6347309 ×2
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] White Part 41740 Element 6249091 ×1
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] Yellowish Green Part 15208 Element 6267421 ×2

Panels 7 pieces

  • Panel 1 x 3 x 1 Light Bluish Gray Part 23950 Element 6210581 ×2
  • Panel 1 x 2 x 1 [Rounded Corners] Trans-Bright Green Part 4865b Element 6246894 or 6076609 ×2
  • Panel 1 x 6 x 5 with Screen with Aliens, Buttons Print Trans-Light Blue Part 59349pr0012 Element 6346805 ×1
  • Panel 1 x 2 x 1 [Rounded Corners] White Part 4865b Element 6552161 or 6146215 ×2

Tiles Special 6 pieces

  • Tile Special Round 3 x 4 x 2/3 Mickey Mouse Black Part 74169 Element 6336633 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Flat Silver Part 2412b Element 4619636 ×4
  • Tile Special 2 x 2 with Top Pin [Squared Holes] White Part 49153 Element 6313138 ×1

Bricks 5 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×2
  • Brick 1 x 2 x 5 with Hollow Studs White Part 2454b Element 6619280 or 245401 ×2

Minifig Accessories 5 pieces

  • Equipment Camera Handheld with Central Viewfinder Black Part 30089b Element 6476480 or 4106552 ×1
  • Equipment Metal Detector, no Stud on Search Head Black Part 93106 Element 6168638 or 4637372 ×1
  • Food Hot Dog / Sausage Red Part 33078 Element 6144805 or 4520952 1 spare in the box ×1
  • Food Hot Dog Bun Tan Part 25386 Element 6413060 or 6147214 ×1
  • Equipment Cup / Mug [Plain] Yellow Part 3899 Element 389924 ×1

Plates 4 pieces

  • Plate 2 x 4 Red Part 3020 Element 302021 ×3
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×1

Rock 4 pieces

  • Rock 1 x 1 Crystal 5 Point Trans-Bright Green Part 30385 Element 6507862 or 6170292 ×2
  • Rock Boulder 4 x 4, Bottom Trans-Bright Green Part 30294 Element 6512334 or 6299469 ×1
  • Rock Boulder 4 x 4, Top Trans-Bright Green Part 30293 Element 6507878 or 6299470 ×1

Windscreens and Fuselage 3 pieces

  • Aircraft Fuselage 6 x 13 x 3 with Window Print Dark Azure Part 74164pr0001 Element 6342610 ×1
  • Aircraft Fuselage Bottom 6 x 16 x 2 Dark Azure Part 74163 Element 6336630 ×1
  • Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle Trans-Light Blue Part 18990 Element 6514148 or 6268646 ×1

Plates Round Curved and Dishes 2 pieces

  • Plate Special 8 x 16 x 2/3, Two Rounded Corners, Reduced Stud Sections Sand Blue Part 74166 Element 6346468 ×1
  • Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Trans-Light Blue Part 4285b Element 6509243 or 6246896 ×1

Tiles 2 pieces

  • Tile 2 x 2 with Metal Panels and Mickey Mouse Logo Print Dark Azure Part 3068bpr0506 Element 6346808 ×1
  • Tile 1 x 2 with Controls, Slides, Joystick Print Light Bluish Gray Part 3069bpr0307 Element 6329662 ×1

Bars, Ladders and Fences 1 piece

  • Bar 6L with Stop Ring Light Bluish Gray Part 63965 Element 6170418 or 6081975 ×1

Flags, Banners and Signs 1 piece

  • Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] Blue Part 11055 Element 6011816 ×1

Supports, Girders and Cranes 1 piece

  • Support 2 x 2 x 10 Girder Triangular Vertical - Type 4 - 3 Posts, 3 Sections Light Bluish Gray Part 95347 Element 6186292 ×1

Technic Pins 1 piece

  • Technic Pin without Friction Ridges Lengthwise Yellow Part 3673 Element 6331822 1 spare in the box ×1

Minifigures 2 figures

  • Mickey Mouse, Astronaut Minifigure, checked as a whole figure ×1
  • Minnie Mouse, Astronaut 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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