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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 Simulation Station

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6455 Space Simulation Station

236 pieces in 126 part and color combinations, plus 3 minifigures.

LEGO counts 245 pieces. This inventory comes from a separate parts catalog and lists 249, including the 13 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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.

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

White 91 pieces

  • Bar 1 x 4 x 2 with Studs White Part 4083 Element 408301 ×1
  • Bar 1 x 6 [Closed Studs] White Part 6140 Element 4288961 or 4279386 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×3
  • Brick 1 x 2 with Shuttle and Yellow Circle Print White Part 3004pr9965 Element 4118667 ×1
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges White Part 2454a ×6
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×2
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×1
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×1
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×11
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×2
  • Brick Sloped 33° 3 x 4 White Part 3297 Element 329701 ×2
  • Brick Sloped 45° 10 x 2 x 2 Double White Part 30180 Element 4502027 or 4110051 ×2
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×2
  • Brick Sloped 45° 2 x 2 with Radar Screen Print White Part 3039pr0005 Element 4261941 or 82024 ×1
  • Brick Sloped 45° 2 x 2 with Space Display Print White Part 3039pr9997 Element 82527 ×1
  • Brick Sloped 55° 1 x 6 x 5 White Part 30249 Element 6223277 or 6108594 ×2
  • Brick Special 1 x 2 with Pin White Part 2458 Element 4160228 or 245801 ×2
  • Brick Special 2 x 2 No Studs, Top Pin White Part 4729 Element 4107436 or 472901 ×1
  • Cone 4 x 4 x 2, Axle Hole [Plain] White Part 3943b Element 6108662 or 4288051 ×1
  • Lever Small Base with Black Lever White Part 298c02 Element 73737 1 spare in the box ×1
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×3
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×4
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×2
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×1
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] White Part 6019 Element 601951 or 601901 ×3
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] White Part 4081b Element 6281990 or 4632566 ×2
  • Plate Special 1 x 2 with 4 x 4 disk at 90 degrees White Part 30209 Element 4118710 ×1
  • Plate Special 4 x 4, Studs on One Edge Plain] White Part 6179 Element 6550149 or 617901 ×1
  • Steering Stand 1 x 2 with Black Steering Wheel White Part 3829c01 Element 4208543 or 9551 ×1
  • Tap 1 x 1 with Hole in Spout White Part 4599a ×1
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×2
  • Technic Pin Connector Round [No Slot] White Part 75535 Element 75535 ×1
  • Tile 2 x 2 with Space Port Logo, Space Shuttle on Blue Background with Yellow Border Print White Part 3068bpr9953 Element 4118621 ×3
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×4
  • Tile Special 1 x 2 with Handle White Part 2432 Element 243201 ×3
  • Tile Special 2 x 2 with Bar and Stud White Part 30256 Element 4117032 ×1
  • Wedge Plate 3 x 3 Cut Corner White Part 2450 Element 6601842 or 4280148 ×2
  • Wedge Plate 3 x 4 without Stud Notches White Part 4859 Element 4215973 or 4199395 ×2
  • Wheel 11 x 12 with Hole Round for Wheels Holder Pin White Part 6014a Element 601401 ×4
  • Window 4 x 10 x 2 Roof Slope Double, Complete Assembly, Trans-Dark Blue Glass White Part 30343c01 Element 4117033 ×1
  • Windscreen 6 x 4 x 1 1/3 with Hollow Studs White Part 6152a Element 615201 ×1

Light Gray 35 pieces

  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×2
  • Brick Special 1 x 1 with 3 Speakers / Loudspeakers / Space Positioning Rockets Light Gray Part 3963 Element 396302 ×2
  • Hinge Plate 2 x 4 with Articulated Joint - Female Light Gray Part 3640 Element 364002 ×2
  • Hinge Plate 2 x 4 with Articulated Joint - Male Light Gray Part 3639 Element 363902 ×2
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×2
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×1
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×1
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×3
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Gray Part 3794a Element 379402 ×1
  • Plate Special 1 x 6 with Train Wagon End Fence Light Gray Part 6583 Element 658302 ×1
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 2 spares in the box ×5
  • Tile 1 x 1 with White and Red Gauge Print Light Gray Part 3070bpr0007 Element 4118664 ×1
  • Tile Special 1 x 1 with Clip and Straight Tips Light Gray Part 2555 Element 255502 ×4
  • Tile Special 1 x 2 with Handle Light Gray Part 2432 Element 243202 ×4
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1

Black 30 pieces

  • Antenna 8H Whip Black Part 2569 Element 6265148 or 6164379 ×2
  • Bar 7 x 3 with Double Clips (Ladder) [Straight Clips] Black Part 6020 Element 602026 ×1
  • Bracket 3 x 2 - 2 x 2 [aka Space Seat] Black Part 4598 Element 6021678 or 459826 ×1
  • Brick Sloped 45° 2 x 2 with Horizon Screen Print Black Part 3039pr9973 Element 4240154 or 82056 ×1
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Black Part 4871 Element 4188534 or 487126 ×3
  • Brick Special 1 x 2 with Handle Black Part 30236 Element 4288212 or 4113243 ×1
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs] Black Part 4855 Element 4550004 or 4278249 ×1
  • Equipment Radio [Extended Handle, Compact Speaker Grille] Black Part 3962b Element 396226 ×1
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Black Part 4085c Element 408526 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×1
  • Plate Special 10 x 10 Octagonal Opening Black Part 6063 Element 4107535 ×1
  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×2
  • Tap 1 x 1 with Hole in Spout Black Part 4599a ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×1
  • Tyre 21 x 12 with Offset Tread Small Wide Black Part 6015 Element 601526 ×4
  • Wheel 20 x 30 Technic Black Part 4266 Element 4107462 or 4101699 ×1

Trans-Neon Green 15 pieces

  • Plate 1 x 2 Trans-Neon Green Part 3023 Element 6240224 or 6102038 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 4 spares in the box ×11

Trans-Dark Blue 14 pieces

  • Brick 1 x 1 Trans-Dark Blue Part 3005 Element 6514215 or 6494117 ×2
  • Brick Round 2 x 2 with Axle Hole Trans-Dark Blue Part 3941 Element 4101741 or 611643 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Trans-Dark Blue Part 3040b Element 4109710 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 2 spares in the box ×3
  • Windscreen 3 x 4 x 4 Inverted Trans-Dark Blue Part 4872 Element 4190972 or 4119351 ×2
  • Windscreen 6 x 4 x 1 1/3 with Hollow Studs Trans-Dark Blue Part 6152a Element 4118940 ×1

Yellow 13 pieces

  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×1
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Yellow Part 30151a Element 4501347 or 4261623 ×1
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×1
  • Road Sign Clip-on 2.2 x 2.667 Triangular with Fire Print Yellow Part 30259pr0001 Element 4116859 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×1
  • Tile 1 x 4 with Black Diagonal Stripes Print Yellow Part 2431pr0017 Element 4119091 ×4
  • Wheel Arch, Mudguard 2 x 4 Studded Yellow Part 3788 Element 378824 ×2

Red 10 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×2
  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×1
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Red Part 30151a Element 4262579 or 4118935 ×1
  • Brick Special 2 x 2 with Pin and Axle Hole Red Part 6232 Element 6347696 or 623221 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×1
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box Also in Trans-Red ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1
  • Tap 1 x 1 with Hole in Spout Red Part 4599a 1 spare in the box ×1

Dark Gray 8 pieces

  • Equipment Binoculars Dark Gray Part 30162 Element 4109923 ×1
  • Plate Special 2 x 4 with Pins Dark Gray Part 30157 Element 4141978 or 4114127 ×1
  • Tool Drill, Electric Dark Gray Part 55297 ×1
  • Tool Hammer Cross Pein [6-Rib Handle] Dark Gray Part 55295 ×1
  • Tool Oil Can [Smooth Handle] Dark Gray Part 55296 ×1
  • Tool Screwdriver with Narrow Head [6-Rib Handle] Dark Gray Part 55298 ×1
  • Tool Wrench / Spanner Open End [6-Rib Handle] Dark Gray Part 55299 ×1
  • Tool Wrench / Spanner, Box [6-Rib Handle] Dark Gray Part 55300 ×1

Blue 5 pieces

  • Brick 1 x 4 Blue Part 3010 Element 301023 ×2
  • Brick 4 x 10 Blue Part 6212 Element 621223 ×1
  • Brick 4 x 6 Blue Part 2356 Element 4190794 or 4181122 ×1
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×1

Tan 4 pieces

  • Baseplate 16 x 16 Tan Part 3867 Element 4106818 ×1
  • Baseplate 16 x 32 Tan Part 3857 Element 4295401 or 4254866 ×1
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×2

Trans-Neon Orange 4 pieces

  • Wave / Flame Rounded with Base Pegs Trans-Neon Orange Part 6126a ×4

Trans-Green 3 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 2 spares in the box ×2
  • Tile 1 x 1 with Groove Trans-Green Part 3070b Element 6581818 or 6254249 1 spare in the box ×1

Trans-Red 3 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 2 spares in the box Also in Red ×2
  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 1 spare in the box ×1

Chrome Gold 1 piece

  • Dome Hemisphere 4 x 4 Multifaceted Chrome Gold Part 30208 Element 4189228 or 4116936 ×1

Minifigures 3 figures

  • Space Port Ground Grew, White Jacket, Black Legs, White Hard Hat, Beard and Glasses Minifigure, checked as a whole figure ×1
  • Astronaut, White, Light Gray Hips, Helmet with Large Chrome Gold Visor, Headset Minifigure, checked as a whole figure ×1
  • Space Port Ground Crew, Red Jumpsuit, Red Cap, Headset and Glasses 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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