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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.

Black Thunder

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5542 Black Thunder

483 pieces in 164 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

Black 189 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×3
  • Brick 1 x 2 Black Part 3004 Element 300426 ×5
  • Brick 1 x 3 Black Part 3622 Element 362226 ×4
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×2
  • Brick 2 x 6 Black Part 2456 Element 4181144 or 245626 ×1
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Black Part 6091 Element 6383142 or 6184784 ×3
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×4
  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×5
  • Brick Sloped 45° 2 x 1 with Bottom pin, with 3 Red Lamps, 3 Yellow Buttons, Yellow Border Print Black Part 3040bpr0008 Element 4121976 or 81149 ×1
  • Brick Sloped 45° 2 x 1 with Bottom pin, with 9 Large + 3 Small White Buttons Print Black Part 3040bpr0011 Element 4251811 or 4121975 ×2
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Black Part 4287a ×14
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×11
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×12
  • Brick Sloped Inverted 75° 2 x 1 x 3 Black Part 2449 Element 4636202 or 4561789 ×2
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×6
  • Brick Wedged, Angled 3 x 2 Left Black Part 6565 Element 4527766 or 656526 ×5
  • Brick Wedged, Angled 3 x 2 Right Black Part 6564 Element 4526931 or 656426 ×5
  • Door 1 x 4 x 5 Train Left Black Part 4181 Element 6192824 or 4111856 ×2
  • Door 1 x 4 x 5 Train Right Black Part 4182 Element 6192825 or 6040299 ×2
  • Plate 1 x 1 Black Part 3024 Element 302426 ×13
  • Plate 1 x 2 Black Part 3023 Element 302326 ×6
  • Plate 1 x 3 Black Part 3623 Element 362326 ×3
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×3
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×4
  • Plate 2 x 4 Black Part 3020 Element 302026 ×5
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 4 x 12 Black Part 3029 Element 302926 ×2
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate 6 x 12 Black Part 3028 Element 302826 ×1
  • Plate 6 x 6 Black Part 3958 Element 395826 ×1
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Black Part 4081b Element 6281993 or 4632571 ×4
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×7
  • Plate Special 1 x 2 with Ladder Black Part 4175 Element 6285241 or 6179557 ×2
  • Plate Special 4 x 4, Studs on One Edge Plain] Black Part 6179 Element 617926 ×2
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×1
  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole Black Part 32124 Element 6280168 or 4114689 ×2
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×1
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×1
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×6
  • Wedge Plate 3 x 3 Cut Corner Black Part 2450 Element 4227684 or 245026 ×2
  • Wedge Plate 3 x 4 without Stud Notches Black Part 4859 ×2

Light Gray 131 pieces

  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×4
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×1
  • Brick 2 x 2 Corner Light Gray Part 2357 Element 235752 or 235702 ×2
  • Brick Arch 1 x 3 x 2 Curved Top Light Gray Part 6005 Element 4239045 or 4111859 ×4
  • Brick Round 2 x 2 with Axle Hole Light Gray Part 3941 Element 614302 or 394102 ×2
  • Brick Sloped 45° 2 x 2 with Flight Control Print Light Gray Part 3039pr9969 Element 81871 ×2
  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×10
  • Hinge Train Gate 2 x 4 Light Gray Part 2873 Element 4238852 or 4109713 ×2
  • Hinge Vehicle Roof Holder 1 x 4 Light Gray Part 4315 Element 431502 ×2
  • Lever Small Base with Light Gray Lever Light Gray Part 298c03 Element 73777 1 spare in the box ×3
  • Plate 1 x 10 Light Gray Part 4477 Element 447702 ×4
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×3
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×6
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×3
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×4
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×4
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×2
  • Plate 2 x 16 Light Gray Part 4282 Element 428202 ×2
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×1
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×2
  • Plate 4 x 12 Light Gray Part 3029 Element 302902 ×1
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×1
  • Plate Round 1 x 1 with Solid Stud Light Gray Part 6141 Element 614102 1 spare in the box ×11
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Gray Part 4032a Element 403202 ×6
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Light Gray Part 6019 Element 601952 or 601902 ×3
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Light Gray Part 4081b Element 408102 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Gray Part 2540 Element 4140584 or 254052 ×1
  • Plate Special 1 x 2 with Ladder Light Gray Part 4175 Element 4100526 or 417502 ×2
  • Propeller 2 Blade 9 Diameter Light Gray Part 2952 Element 4107163 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Light Gray Part 32034 Element 4107830 ×1
  • Technic Beam 1 x 3 Thin Light Gray Part 6632 Element 4107825 ×1
  • Technic Brick 1 x 1 with Pin Hole Light Gray Part 6541 Element 654102 ×2
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 1 spare in the box ×2
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a 1 spare in the box ×6
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×7
  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole Light Gray Part 32124 Element 4114688 ×1
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×2
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×2
  • Tile 1 x 8 with Groove Light Gray Part 4162 Element 416202 ×2
  • Tile Round 2 x 2 with Bottom Cross Light Gray Part 4150 Element 415052 or 415002 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×4
  • Tile Special 1 x 2 with Handle Light Gray Part 2432 Element 243202 ×4
  • Wedge Plate 3 x 6 Cut Corners Light Gray Part 2419 Element 241902 ×1

Yellow 85 pieces

  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2
  • Brick Sloped 33° 3 x 1 Yellow Part 4286 Element 428624 ×5
  • Brick Sloped 45° 2 x 1 with Bottom Pin Yellow Part 3040b Element 4121965 or 304024 ×4
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Yellow Part 3747b Element 4500459 or 374724 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×2
  • Brick Special 1 x 1 with Headlight Yellow Part 4070 Element 407024 ×6
  • Brick Wedged, Angled 3 x 2 Left Yellow Part 6565 Element 6138215 or 4527769 ×2
  • Brick Wedged, Angled 3 x 2 Right Yellow Part 6564 Element 6138210 or 4526936 ×2
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 1 x 10 Yellow Part 4477 Element 6079138 or 6078095 ×4
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×4
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×8
  • Plate 2 x 10 Yellow Part 3832 Element 383224 ×1
  • Plate 2 x 12 Yellow Part 2445 Element 4552336 or 4189100 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×5
  • Plate 2 x 2 Corner Yellow Part 2420 Element 242074 or 242024 ×8
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×1
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×1
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×3
  • Plate 2 x 8 Yellow Part 3034 Element 303424 ×5
  • Plate 4 x 4 Yellow Part 3031 Element 4243817 or 303124 ×1
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Yellow Part 3794a ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Yellow Part 2444 Element 244424 ×1
  • Wedge Plate 3 x 4 without Stud Notches Yellow Part 4859 Element 4181033 ×2
  • Window 1 x 4 x 3 Train with All Studs Hollow Yellow Part 4033 Element 4264949 or 4111855 ×2

Red 38 pieces

  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick 2 x 2 Corner Red Part 2357 Element 235771 or 235721 ×8
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Red Part 6091 Element 6184782 or 609121 ×2
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Red Part 4276b Element 4238277 or 427621 ×4
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Red Part 4275b Element 4179194 or 427521 ×4
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 4 Red Part 3710 Element 371021 ×1
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×3
  • Plate 2 x 4 Red Part 3020 Element 302021 ×1
  • Plate 2 x 6 Red Part 3795 Element 379521 ×2
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box Also in Trans-Red ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×2
  • Plate Special 1 x 2 with Ladder Red Part 4175 Element 6285246 or 6179575 ×1

Blue 24 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×1
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×1
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×2
  • Brick 2 x 2 Corner Blue Part 2357 Element 4558606 or 4533323 ×2
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Blue Part 4349 Element 4111858 ×2
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×5
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×3
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Blue Part 3794a ×4
  • Technic Plate 2 x 4 [3 Holes] Blue Part 3709 Element 370923 ×1

Trans-Clear 8 pieces

  • Glass for Train Door Lip On Top and Bottom Trans-Clear Part 4183 Element 418340 ×4
  • Glass for Train Window 1 x 4 x 3 Trans-Clear Part 4034 Element 403440 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box ×1
  • Windscreen 5 x 8 x 3 Trans-Clear Part 2826 Element 4111854 ×1

Dark Gray 5 pieces

  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×4
  • Weapon Lance Dark Gray Part 3849 Element 384927 ×1

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box Also in Red ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 5542-1 [No Color/Any Color] Part 71921 Element 4111899 ×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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