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LEGO Missing Piece Checker

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Sonic the Hedgehog – Green Hill Zone

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21331 Sonic the Hedgehog – Green Hill Zone

1,122 pieces in 284 part and color combinations, plus 1 minifigure.

The official piece count includes the 3 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.

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 431 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 1 spare in the box ×4
  • Plate 1 x 10 Black Part 4477 Element 447726 ×8
  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×3
  • Plate 1 x 3 Black Part 3623 Element 362326 Also in Dark Blue ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 1 x 5 Black Part 78329 Element 6350415 ×4
  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 Also in Dark Blue ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×5
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×2
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×1
  • Plate 1 x 2 Bright Green Part 3023 Element 6343326 or 6014491 ×15
  • Plate 2 x 3 Bright Pink Part 3021 Element 6102999 or 4245290 ×1
  • Plate 1 x 3 Dark Blue Part 3623 Element 6554187 or 4177735 Also in Black ×1
  • Plate 2 x 3 Dark Blue Part 3021 Element 6554192 or 4530028 Also in Black ×4
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×2
  • Plate 1 x 1 Dark Orange Part 3024 Element 6186012 or 4603739 2 spares in the box ×110
  • Plate 1 x 2 Dark Orange Part 3023 Element 4570877 or 4162217 ×11
  • Plate 1 x 4 Dark Orange Part 3710 Element 6074892 or 4603740 ×8
  • Plate 2 x 4 Dark Orange Part 3020 Element 4535928 or 4164449 ×2
  • Plate 1 x 8 Dark Tan Part 3460 Element 6156492 or 4246960 ×2
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×8
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×4
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×2
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×2
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×2
  • Plate 1 x 2 Lime Part 3023 Element 4164037 or 4122439 ×19
  • Plate 1 x 4 Lime Part 3710 Element 4187743 or 4122441 ×2
  • Plate 2 x 4 Lime Part 3020 Element 4537936 or 4534667 ×3
  • Plate 2 x 6 Lime Part 3795 Element 4621548 or 4563344 ×2
  • Plate 4 x 4 Lime Part 3031 Element 4504850 or 4160080 ×1
  • Plate 1 x 6 Medium Azure Part 3666 Element 6603312 or 4625036 ×2
  • Plate 2 x 8 Medium Azure Part 3034 Element 6603343 or 6253666 ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 1 spare in the box ×8
  • Plate 1 x 2 Red Part 3023 Element 302321 ×6
  • Plate 1 x 3 Red Part 3623 Element 362321 ×5
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 2 spares in the box ×107
  • Plate 1 x 2 Reddish Brown Part 3023 Element 4211150 ×9
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×4
  • Plate 2 x 12 Reddish Brown Part 2445 Element 4225700 ×1
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×2
  • Plate 2 x 2 Corner Reddish Brown Part 2420 Element 4211257 ×10
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×2
  • Plate 4 x 4 Reddish Brown Part 3031 Element 4243838 or 4225868 ×4
  • Plate 4 x 6 Reddish Brown Part 3032 Element 4271874 or 4211213 ×2
  • Plate 1 x 2 Trans-Light Blue Part 3023 Element 6514007 or 6240222 ×4
  • Plate 1 x 1 Yellow Part 3024 Element 302424 1 spare in the box ×5
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×1
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×6
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×1
  • Plate 4 x 4 Yellow Part 3031 Element 4243817 or 303124 ×1

Plates Special 156 pieces

  • Bracket 1 x 1 - 1 x 1 Inverted Black Part 36840 Element 6234695 ×4
  • Bracket 1 x 2 - 1 x 2 Inverted Black Part 99780 Element 6020193 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Black Part 60897 Element 6330189 or 4617547 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Black Part 15573 Element 6092585 ×4
  • Plate Special 1 x 2 with Clip Horizontal on Side Black Part 11476 Element 6313116 or 6132731 ×4
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Black Part 34103 Element 6199908 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Black Part 87580 Element 6663108 or 4565323 ×4
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Black Part 99206 Element 6052126 ×10
  • Plate Special 2 x 6 x 2/3 with 4 Studs on Side, 1 Support Wall on Bottom Black Part 87609 Element 4653049 ×10
  • Bracket 1 x 1 - 1 x 1 Bright Green Part 36841 Element 6384591 ×30
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Bright Green Part 18674 Element 6380676 ×1
  • Bracket 1 x 2 - 1 x 2 Dark Azure Part 99781 Element 6152101 ×1
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Dark Blue Part 41740 Element 6256610 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Dark Bluish Gray Part 4081b Element 6281996 or 4632574 ×2
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Dark Bluish Gray Part 41740 Element 6257592 ×1
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Dark Bluish Gray Part 65509 Element 6307616 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Bluish Gray Part 18674 Element 6115080 ×1
  • Bracket 1 x 2 - 1 x 2 Inverted Green Part 99780 Element 6099243 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Green Part 2540 Element 4542391 or 4519974 ×3
  • Bracket 2 x 2 with 1 x 2 Vertical Studs Light Bluish Gray Part 41682 Element 6258820 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Light Bluish Gray Part 61252 Element 6335378 or 4541978 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×3
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Light Bluish Gray Part 99206 Element 4654577 ×3
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Light Bluish Gray Part 18674 Element 6183782 ×2
  • Technic Plate 2 x 6 [5 Holes] Light Bluish Gray Part 32001 Element 4211542 ×1
  • Bracket 1 x 1 - 1 x 1 Lime Part 36841 Element 6384590 ×31
  • Bracket 1 x 2 - 2 x 2 Lime Part 44728 Element 6212972 or 6120340 ×3
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Lime Part 60478 Element 6133859 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Red Part 2540 Element 4140585 or 254021 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Red Part 60478 Element 4515365 ×2
  • Plate Special 1 x 2 with Pin Hole Underneath Red Part 18677 Element 6168634 or 6109459 ×2
  • Plate Special 1 x 2, Top Clip [Open O] Red Part 44861 Element 6347308 ×2
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Red Part 34103 Element 6251410 ×1
  • Bracket 1 x 2 - 2 x 2 Inverted Reddish Brown Part 99207 Element 6226436 ×1
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Reddish Brown Part 65509 Element 6307618 ×1
  • Bracket 1 x 1 - 1 x 1 White Part 36841 Element 6548291 or 6296132 ×2
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] White Part 41740 Element 6249091 ×2
  • Bracket 1 x 2 - 2 x 2 Inverted Yellow Part 99207 Element 6208753 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Yellow Part 15573 Element 6092583 ×5

Tiles 65 pieces

  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×4
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×3
  • Tile 1 x 3 Black Part 63864 Element 4558170 ×2
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×9
  • Tile 2 x 4 with Groove Black Part 87079 Element 4560182 ×1
  • Tile 1 x 1 with Groove Bright Green Part 3070b Element 6172375 1 spare in the box ×1
  • Tile 2 x 2 with Groove Bright Pink Part 3068b Element 4615728 ×1
  • Tile 1 x 1 with Groove Dark Orange Part 3070b Element 6143431 1 spare in the box ×1
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×5
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×7
  • Tile 1 x 1 with Groove Lime Part 3070b Element 4537251 1 spare in the box ×1
  • Tile 1 x 4 with Green Pixelated Greenery Print Lime Part 2431pr0177 Element 6372160 ×10
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×1
  • Tile 1 x 3 Red Part 63864 Element 4533742 ×1
  • Tile 2 x 4 with Groove Red Part 87079 Element 4560179 ×1
  • Tile 1 x 1 with Groove Reddish Brown Part 3070b Element 4211288 1 spare in the box ×1
  • Tile 1 x 6 with Groove Reddish Brown Part 6636 Element 4211204 ×4
  • Tile 1 x 2 with Groove Trans-Light Blue Part 3069b Element 6514224 or 6251295 ×4
  • Tile 1 x 4 with Groove Trans-Light Blue Part 2431 Element 6510178 or 6252049 ×4
  • Tile 2 x 4 with Groove Yellow Part 87079 Element 6388490 or 4560181 ×1

Plates Round Curved and Dishes 63 pieces

  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Azure Part 4032a Element 6226919 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Brown Part 4032a Element 4623298 ×1
  • Plate Round 1 x 1 with Open Stud Dark Tan Part 85861 Element 6300322 1 spare in the box ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Dark Tan Part 35480 Element 6231386 ×8
  • Plate Round 1 x 1 with Open Stud Light Bluish Gray Part 85861 Element 6168647 or 6124825 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Nougat Part 4032a Element 6384589 ×2
  • Plate Round 1 x 1 with Open Stud Lime Part 85861 Element 6190251 1 spare in the box ×3
  • Plate Special 1 x 2 Rounded with 2 Open Studs Lime Part 35480 Element 6264062 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1
  • Plate Round 1 x 1 with Open Stud Reddish Brown Part 85861 Element 6215659 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 1 spare in the box ×20
  • Plate Special 1 x 2 Rounded with 2 Open Studs Reddish Brown Part 35480 Element 6248944 ×2
  • Dish 2 x 2 Inverted [Radar] Trans-Clear Part 4740 Element 6514246 or 6245306 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Yellow Part 2654 Element 6581773 or 6171728 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×1

Bricks 62 pieces

  • Brick 1 x 2 x 2 with Inside Stud Holder Blue Part 3245c Element 6133724 ×1
  • Brick 1 x 1 Dark Blue Part 3005 Element 6554189 or 4255413 ×1
  • Brick 1 x 1 Dark Orange Part 3005 Element 6254484 or 6000643 ×24
  • Brick 1 x 2 x 3 with Bottom Stud Holder Dark Orange Part 22886 Element 6315191 ×2
  • Brick 1 x 4 Dark Orange Part 3010 Element 6223040 or 4597484 ×3
  • Brick 1 x 1 Reddish Brown Part 3005 Element 4211242 ×21
  • Brick 1 x 2 x 5 with Hollow Studs Reddish Brown Part 2454b Element 4277016 ×2
  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×1
  • Brick 2 x 2 Corner Reddish Brown Part 2357 Element 4211200 ×2
  • Brick 1 x 1 Trans-Clear Part 3005 Element 6514207 or 6220959 ×3
  • Brick 2 x 10 White Part 3006 Element 4617855 or 300601 ×1
  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×1

Bricks Curved 51 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Black Part 11477 Element 6047276 ×2
  • Brick Curved Inverted 4 x 1 Black Part 13547 Element 6039869 ×8
  • Brick Arch 1 x 4 Light Bluish Gray Part 3659 Element 4211435 ×1
  • Brick Curved 1 x 2 x 1 No Studs Light Bluish Gray Part 37352 Element 6227184 ×4
  • Brick Curved 2 x 2 x 2/3 Light Bluish Gray Part 15068 Element 6102357 ×4
  • Brick Curved 3 x 2 No Studs Light Bluish Gray Part 24309 Element 6132207 ×4
  • Brick Curved 2 x 2 x 2/3 Lime Part 15068 Element 6138661 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×11
  • Brick Curved Inverted 2 x 1 Red Part 24201 Element 6186398 ×4
  • Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports] Reddish Brown Part 14395 Element 6044725 ×4
  • Brick Curved 1 x 3 x 2 Inverted [Inside Bow] Reddish Brown Part 18653 Element 6133833 ×4
  • Brick Curved 1 x 5 x 4 Inverted Reddish Brown Part 30099 Element 6470193 or 6097417 ×4

Tiles Round and Curved 38 pieces

  • Tile Round 1 x 1 Blue Part 98138 Element 6284575 or 6009460 1 spare in the box ×1
  • Tile Round 2 x 2 with Bottom Stud Holder Blue Part 14769 Element 6133844 ×1
  • Tile Round 1 x 1 Quarter Coral Part 25269 Element 6250022 1 spare in the box ×1
  • Tile Round 2 x 2 with Bottom Stud Holder Dark Azure Part 14769 Element 6346764 ×2
  • Tile Round 1 x 1 Dark Bluish Gray Part 98138 Element 6284596 or 6222416 1 spare in the box ×3
  • Tile Round 1 x 1 Half Circle Light Bluish Gray Part 24246 Element 6250597 or 6151688 1 spare in the box ×1
  • Tile Round 1 x 1 Quarter Lime Part 25269 Element 6211875 1 spare in the box ×18
  • Tile Round 2 x 2 with Bottom Stud Holder Lime Part 14769 Element 6092766 ×1
  • Tile Round 1 x 1 Half Circle Red Part 24246 Element 6258973 1 spare in the box ×4
  • Tile Round 2 x 2 with Bottom Stud Holder Red Part 14769 Element 6066342 ×1
  • Tile Round 3 x 3 Red Part 67095 Element 6331874 ×1
  • Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 1 spare in the box ×2
  • Tile Round 1 x 1 with Black Off-Center Dot/Circle/Eye Print White Part 98138pr0273 Element 6384891 1 spare in the box ×2

Technic Bricks 37 pieces

  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×4
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Black Part 32064a Element 6178922 or 4233487 ×12
  • Technic Brick 1 x 1 with Axle Hole Dark Bluish Gray Part 73230 Element 6362259 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×1
  • Technic Brick 1 x 1 with Pin Hole Red Part 6541 Element 654121 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Red Part 32064a Element 6196217 or 4513987 ×9
  • Technic Brick 1 x 4 [3 Pin Holes] Reddish Brown Part 3701 Element 4267994 ×3
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×4

Bricks Special 31 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Black Part 4733 Element 473326 ×1
  • Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side Black Part 32952 Element 6228987 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Black Part 11211 Element 6138173 ×8
  • Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides Black Part 67329 Element 6308883 ×1
  • Brick Special 2 x 2 with Grooves and Axle Hole Dark Bluish Gray Part 90258 Element 6236949 or 4583879 ×1
  • Brick Special 2 x 2 with Grooves and Axle Hole Dark Orange Part 90258 Element 6315198 ×1
  • Brick Special 1 x 1 with Headlight Light Bluish Gray Part 4070 Element 4211476 ×4
  • Brick Special 1 x 1 with Studs on 2 Adjacent Sides Light Bluish Gray Part 26604 Element 6267495 ×4
  • Brick Special 1 x 1 Studs on 4 Sides Lime Part 4733 Element 6174006 or 4212458 ×1
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×2
  • Brick Special 1 x 1 with Headlight Trans-Clear Part 4070 Element 6514231 or 6244796 ×4
  • Brick Special 1 x 1 Studs on 4 Sides White Part 4733 Element 4111971 or 473301 ×2

Bricks Round and Cones 24 pieces

  • Brick Round 2 x 2 [Grill] Dark Brown Part 92947 Element 6109329 ×1
  • Brick Round 2 x 2 Dome Top with Blue Glasses Print Light Nougat Part 30367cpr1024 Element 6372161 ×1
  • Brick Round 1 x 1 Open Stud Reddish Brown Part 3062b Element 4211183 ×14
  • Brick Round 2 x 2 with Axle Hole Trans-Clear Part 3941 Element 6514281 or 6273152 ×4
  • Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×1
  • Brick Round 2 x 2 Dome Top, Hollow Stud Yellow Part 30367c Element 4216656 ×1
  • Brick Round 2 x 2 Special with Spikes Yellow Part 27266 Element 6215043 ×1
  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×1

Bricks Sloped 23 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Blue Part 54200 Element 4504374 or 4502092 1 spare in the box ×2
  • Brick Sloped 33° 3 x 1 Dark Blue Part 4286 Element 6103774 or 4288231 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Orange Part 3660 Element 6187575 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 with Dashboard, Speedometers Print Light Bluish Gray Part 85984pr0021 Element 6329152 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Lime Part 54200 Element 4504372 or 4298015 1 spare in the box ×3
  • Brick Sloped Inverted 45° 2 x 1 Lime Part 3665 Element 6030276 or 4164028 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Red Part 85984 Element 4651524 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Reddish Brown Part 54200 Element 4504376 or 4260486 1 spare in the box ×2
  • Brick Sloped Inverted 33° 3 x 1 with Internal Stopper and No Front Stud Connection Reddish Brown Part 4287c Element 4211195 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Light Blue Part 54200 Element 6245277 or 6073445 1 spare in the box ×3
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Yellow Part 54200 Element 4504381 or 4283095 1 spare in the box ×3
  • Brick Sloped 30° 1 x 2 x 2/3 Yellow Part 85984 Element 4550348 ×1
  • Brick Sloped 45° 2 x 2 Yellow Part 3039 Element 303924 ×1

Tiles Special 21 pieces

  • Tile Special 2 x 2 Corner with Cut Corner - Facet Black Part 27263 Element 6166859 ×6
  • Tile Special Round 2 x 2 with Hole Black Part 15535 Element 6143850 ×2
  • Tile Special Round 1 x 1 with Hollow Bar Dark Azure Part 20482 Element 6223733 1 spare in the box ×2
  • Tile Special 1 x 1 with Clip with Rounded Edges Dark Green Part 15712 Element 6348061 or 6310996 ×3
  • Tile Special 2 x 3 Pentagonal Lime Part 22385 Element 6253457 ×5
  • Tile Special Round 2 x 2 with Hole Lime Part 15535 Element 6167483 ×1
  • Tile Special 1 x 1 with Clip with Rounded Edges Sand Green Part 15712 Element 6348059 or 6125669 ×2

Bars, Ladders and Fences 18 pieces

  • Bar 3L Black Part 87994 Element 6185316 or 6093525 1 spare in the box ×8
  • Bar 3L Blue Part 87994 Element 6345634 1 spare in the box ×2
  • Bar 4L (Lightsaber Blade / Wand) Lime Part 30374 Element 6327442 ×1
  • Bar 1 x 12 with 1 x 2 Plate End with Solid Studs and 1 x 1 Round Plate End Trans-Clear Part 42445 Element 6276993 or 4169199 ×4
  • Bar, Angled with 1 x 1 Round Plate / Stud on End Trans-Clear Part 65578 Element 6510188 or 6285587 1 spare in the box ×1
  • Bar Holder with Clip Yellow Part 11090 Element 6341463 or 6015892 ×2

Minifig Accessories 16 pieces

  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Dark Bluish Gray Part 4349 Element 4210698 ×2
  • Equipment Hose Nozzle / Gun with Side String Hole Simplified Light Bluish Gray Part 60849 Element 6641461 or 4515897 1 spare in the box ×4
  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Light Bluish Gray Part 64644 Element 4657366 ×1
  • Tap 1 x 1 without Hole in Spout Light Bluish Gray Part 4599b Element 4211503 1 spare in the box ×2
  • Equipment Flotation Ring [Life Preserver] Yellow Part 30340 Element 4527354 ×7

Hinges, Arms and Turntables 12 pieces

  • Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth Black Part 57360 Element 6271535 ×6
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Black Part 30383 Element 6338799 or 4144575 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, without Groove Black Part 44567b Element 6266244 ×3
  • Hinge Plate 2 x 2 Locking with 1 Finger on Top Light Bluish Gray Part 92582 Element 6265742 or 4666449 ×1

Plates Wedged 10 pieces

  • Wedge Plate 2 x 2 Left Light Bluish Gray Part 24299 Element 6163478 ×2
  • Wedge Plate 2 x 2 Right Light Bluish Gray Part 24307 Element 6163477 ×2
  • Wedge Plate 2 x 4 Light Bluish Gray Part 51739 Element 4507056 or 4252368 ×2
  • Wedge Plate 4 x 2 Left Reddish Brown Part 41770 Element 4205470 ×4

Technic Connectors 10 pieces

  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×2
  • Technic Axle and Pin Connector Angled #1 Lime Part 32013 Element 6332867 or 6150003 ×1
  • Technic Pin Connector Round 1L [Beam] Reddish Brown Part 18654 Element 6170813 1 spare in the box ×7

Technic Pins 10 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×1
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×5
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2

Technic Axles 9 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×3
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×1

Bricks Wedged 8 pieces

  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Black Part 29120 Element 6181720 ×2
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Black Part 29119 Element 6181713 ×2
  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Light Bluish Gray Part 29120 Element 6225139 ×1
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Light Bluish Gray Part 29119 Element 6225142 ×1
  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Red Part 29120 Element 6177505 ×1
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Red Part 29119 Element 6177507 ×1

Rock 7 pieces

  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Clear Part 30153 Element 6513976 or 6247798 1 spare in the box ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Dark Blue Part 30153 Element 6513973 or 6247793 1 spare in the box ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Dark Pink Part 30153 Element 6513975 or 6247796 1 spare in the box ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Green Part 30153 Element 6513970 or 6247788 1 spare in the box ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Light Blue Part 30153 Element 6513972 or 6247792 1 spare in the box ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Red Part 30153 Element 6513969 or 6247785 1 spare in the box ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Yellow Part 30153 Element 6513974 or 6247795 1 spare in the box ×1

Animal / Creature Body Parts 4 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Flat Silver Part 53451 Element 6270108 or 4612901 1 spare in the box ×2
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Yellow Part 53451 Element 6270110 or 6014033 1 spare in the box ×2

Panels 4 pieces

  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Trans-Clear Part 87544 Element 6507949 or 6211814 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Yellow Part 15207 Element 6092648 ×2

Minifig Upper Body 2 pieces

  • Hand Hulk - Left White Part 10127 Element 6618637 or 6384594 ×1
  • Hand Hulk - Right White Part 10126 Element 6618632 or 6384592 ×1

Plants & Trees 2 pieces

  • Plant, Plate 1 x 1 Round with 3 Leaves Lime Part 32607 Element 6286831 ×2

Stickers 2 pieces

  • Sticker Sheet 1 for Set 21331-1 [No Color/Any Color] Part 93691 Element 6381978 ×1
  • Sticker Sheet 2 for Set 21331-1 [No Color/Any Color] Part 10001913 Element 6397570 ×1

Technic Special 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Black Part 48267 Element 6288220 ×2

Energy Effects 1 piece

  • Wave / Flame Small with Pin Trans-Orange Part 37775 Element 6514274 or 6357747 1 spare in the box ×1

Tools 1 piece

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

Wheels and Tyres 1 piece

  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Black Part 55982 Element 4517737 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 3 x 6 x 1 Curved with Rectangular Stud Holder in Bottom Trans-Clear Part 35299 Element 6507938 or 6246850 ×1

Minifigures 1 figure

  • Sonic the Hedgehog, Light Nougat Face, Black Eyes 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.