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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.

Mission Commander

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6986 Mission Commander

459 pieces in 129 part and color combinations, plus 3 minifigures.

LEGO counts 478 pieces. This inventory comes from a separate parts catalog and lists 477, including the 18 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.

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Piece checklist

Black 254 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×4
  • Bar 1 x 6 [Open Studs] Black Part 4873 ×2
  • Brick 1 x 2 Black Part 3004 Element 300426 ×10
  • Brick 1 x 4 Black Part 3010 Element 301026 ×2
  • Brick 1 x 6 Black Part 3009 Element 300926 ×3
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×4
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×1
  • Brick Sloped 33° 3 x 2 with 'POLICE' Print (Space Police I) Black Part 3298pr0013 ×3
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×4
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×2
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Black Part 3747a ×1
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×2
  • Brick Special 1 x 2 x 2/3 with Studs on Sides Black Part 4595 Element 6681661 or 4523339 ×2
  • Brick Special 2 x 2 with Pin and No Axle Hole Black Part 4730 Element 473026 ×1
  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections Black Part 4856a Element 4585334 or 4226506 ×1
  • Dish 2 x 2 Inverted [Radar] Black Part 4740 Element 474026 ×2
  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] Black Part 3475b Element 347526 ×2
  • Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube) Black Part 73590c01a ×2
  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×8
  • Hinge Panel 6 x 3 Black Part 2440 Element 6226636 or 4264133 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Black Part 4276b Element 4264363 or 4256402 ×3
  • Hinge Vehicle Roof 4 x 4 Black Part 4213 Element 421326 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Black Part 4315 Element 4250225 or 431576 ×2
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×6
  • Panel 1 x 2 x 3 - Solid Studs Black Part 2362a Element 4113027 ×4
  • Panel 1 x 2 x 3 with Space Police I Left Print Black Part 2362apr0001 ×2
  • Panel 1 x 2 x 3 with Space Police I Right Print Black Part 2362apr0002 ×2
  • Panel 3 x 3 x 6 Corner Convex Black Part 2468 ×4
  • Plate 1 x 1 Black Part 3024 Element 302426 ×6
  • Plate 1 x 2 Black Part 3023 Element 302326 ×17
  • Plate 1 x 3 Black Part 3623 Element 362326 ×9
  • Plate 1 x 4 Black Part 3710 Element 371026 ×13
  • Plate 1 x 6 Black Part 3666 Element 366626 ×16
  • Plate 1 x 8 Black Part 3460 Element 346026 ×4
  • Plate 2 x 16 Black Part 4282 Element 428276 or 428226 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×6
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×3
  • Plate 4 x 12 Black Part 3029 Element 302926 ×3
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate 6 x 12 Black Part 3028 Element 302826 ×1
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Black Part 4623 Element 4597267 or 462326 ×4
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×9
  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×2
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×3
  • Support Round 2 x 2 x 2 Stand with Reach-Through Center Hole Black Part 3940b Element 394026 ×13
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×1
  • Technic Rack 1 x 20 x 2/3 Black Part 2428 ×1
  • Technic Rack Winder [Complete Assembly] Black Part 2426c01 ×1
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×7
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×6
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×1
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×5
  • Tile Special 1 x 2 Grille without Bottom Groove Black Part 2412a ×4
  • Tile Special 1 x 2 with Handle Black Part 2432 Element 243226 ×4
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4
  • Wedge Plate 10 x 10 with 4x4 Cutout and Cut Corner Black Part 2401 Element 240126 ×2
  • Wedge Plate 3 x 6 Cut Corners Black Part 2419 Element 241926 ×3
  • Wedge Plate 4 x 4 Wing Left Black Part 3936 Element 4280156 or 4189084 ×1
  • Wedge Plate 4 x 4 Wing Right Black Part 3935 Element 4280157 or 4189086 ×1
  • Wedge Plate 8 x 4 Wing Right without Stud Notch Black Part 3934a ×1
  • Wedge, Plate 7 x 12 Wing Left Black Part 3586 Element 4110011 ×1
  • Wedge, Plate 7 x 12 Wing Right Black Part 3585 Element 4110010 or 358526 ×1
  • Wedge, Plate 8 x 4 Wing Left without Underside Stud Notch Black Part 3933a ×1
  • Wheel Arch, Mudguard 2 x 4 Studded Black Part 3788 Element 4195378 or 378826 ×1
  • Wing, Tail 4 x 1 x 3 Black Part 2340 Element 6591863 or 4651541 ×4

Blue 158 pieces

  • Antenna 1 x 4 with Rounded Top Blue Part 3957a Element 395723 ×2
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Blue Part 2436 Element 4282744 or 4189120 ×2
  • Bracket 3 x 2 - 2 x 2 [aka Space Seat] Blue Part 4598 Element 4657998 or 459823 ×3
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×6
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×2
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×2
  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×2
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×1
  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Blue Part 4460a ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Blue Part 4287a ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×1
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed Blue Part 4854 Element 4296467 or 4140621 ×2
  • Dish 2 x 2 Inverted [Radar] Blue Part 4740 Element 4570283 or 4239188 ×4
  • Hinge Brick 1 x 2 Base Blue Part 3937 Element 393723 ×8
  • Hinge Brick 1 x 2 Top Plate Thin Blue Part 3938 Element 4279389 or 393823 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Blue Part 4276b Element 4238854 or 4114247 ×3
  • Hinge Plate 1 x 2 with 3 Fingers On Side Blue Part 2452 Element 4239013 or 4112883 ×2
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Blue Part 4275b Element 4239024 or 427523 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Blue Part 73983 Element 6102759 or 4119371 ×4
  • Hinge Plate 1 x 6 with 2 and 3 Fingers On Ends Blue Part 4504 Element 4246943 or 450423 ×1
  • Hinge Tile 1 x 4 Blue Part 4625 Element 462523 ×2
  • Panel 1 x 2 x 3 - Solid Studs Blue Part 2362a Element 4113025 ×2
  • Panel 3 x 2 x 6 Blue Part 2466 ×4
  • Panel 4 x 4 x 6 Corner Concave Blue Part 2467 ×4
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×9
  • Plate 1 x 10 Blue Part 4477 Element 447723 ×5
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×15
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×4
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×9
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×6
  • Plate 2 x 10 Blue Part 3832 Element 383223 ×1
  • Plate 2 x 12 Blue Part 2445 Element 244523 ×1
  • Plate 2 x 16 Blue Part 4282 Element 6481432 or 4595188 ×1
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×5
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×4
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×3
  • Plate 4 x 10 Blue Part 3030 Element 303073 or 303023 ×1
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Blue Part 3794a ×5
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Blue Part 3839b Element 4286615 or 383923 ×1
  • Slope 45° 4 x 4 Double with Hinge Blue Part 4857 Element 485723 ×2
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×6
  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×3
  • Tile Special 1 x 2 Grille without Bottom Groove Blue Part 2412a ×2
  • Wedge Plate 3 x 3 Cut Corner Blue Part 2450 Element 6536558 or 4609330 ×2
  • Wedge Plate 3 x 6 Cut Corners Blue Part 2419 Element 241923 ×2
  • Wedge, Plate 8 x 8 with 4 x 4 Cutout Blue Part 4475 ×1
  • Window 1 x 4 x 3 Train with All Studs Hollow Blue Part 4033 Element 4141273 ×2

Trans-Red 43 pieces

  • Antenna 1 x 4 with Rounded Top Trans-Red Part 3957a Element 6065498 or 4106520 ×8
  • Cone 1 x 1 [No Top Groove] Trans-Red Part 4589 Element 618841 ×2
  • Dish 2 x 2 Inverted [Radar] Trans-Red Part 4740 Element 6580377 or 6245303 ×2
  • Glass for Window 1 x 4 x 3 Trans-Red Part 3855 ×2
  • Panel 3 x 2 x 6 Trans-Red Part 2466 ×8
  • Panel 3 x 3 x 6 Corner Convex Trans-Red Part 2468 ×2
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×8
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×10
  • Windscreen 10 x 4 x 2 1/3 Canopy Trans-Red Part 2507 ×1

White 4 pieces

  • Wheel 8 x 6 White Part 4624 Element 462401 ×4

Minifigures 3 figures

  • Space Police I Minifigure, checked as a whole figure ×2
  • Blacktron I (3626a Head) 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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