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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.

Sonic Boom

Checking

5892 Sonic Boom

539 pieces in 155 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.

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Piece checklist

Plates 137 pieces

  • Plate 1 x 10 Black Part 4477 Element 447726 ×4
  • Plate 1 x 6 Black Part 3666 Element 366626 ×4
  • Plate 2 x 10 Black Part 3832 Element 383226 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×5
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 6 x 12 Black Part 3028 Element 302826 ×2
  • Plate 6 x 6 Black Part 3958 Element 395826 ×2
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 ×4
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×8
  • Plate 1 x 8 Dark Bluish Gray Part 3460 Element 4210998 ×2
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×12
  • Plate 1 x 12 Light Bluish Gray Part 60479 Element 4514846 ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×10
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×4
  • Plate 6 x 14 Light Bluish Gray Part 3456 Element 4293831 or 4239371 ×1
  • Plate 1 x 10 Red Part 4477 Element 447721 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×6
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×8
  • Plate 2 x 3 Red Part 3021 Element 302121 ×4
  • Plate 2 x 4 Red Part 3020 Element 302021 ×8
  • Plate 2 x 6 Red Part 3795 Element 379521 ×5
  • Plate 4 x 6 Red Part 3032 Element 303221 ×3
  • Plate 1 x 1 Trans-Green Part 3024 Element 6513967 or 6252046 ×1
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×3
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×4
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×8
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×4
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×3
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×9

Bricks Sloped 73 pieces

  • Brick Sloped 45° 2 x 2 with Green Radar, Green/Red Buttons and Disk Slot Print Black Part 3039pr0002 Element 4295400 ×1
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×2
  • Brick Sloped Inverted 75° 2 x 1 x 3 Dark Bluish Gray Part 2449 Element 4500975 or 4226442 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 1 spare in the box ×4
  • Brick Sloped 18° 4 x 1 Red Part 60477 Element 4515360 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Red Part 54200 Element 5074621 or 4504379 ×30
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×8
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×2
  • Brick Sloped 45° 2 x 8 Red Part 4445 Element 4550322 or 4239184 ×4
  • Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×11
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed Red Part 4854 Element 4643320 or 4603489 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×2

Tiles 39 pieces

  • Tile 1 x 2 with Joystick and Vehicle Control Panel Print Dark Bluish Gray Part 3069bpr0090 Element 4221879 ×1
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 ×9
  • Tile 1 x 6 with Groove Dark Bluish Gray Part 6636 Element 4210651 ×4
  • Tile 1 x 3 Light Bluish Gray Part 63864 Element 4558169 ×2
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×4
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×6
  • Tile 1 x 6 with Groove Red Part 6636 Element 4113858 ×4
  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×2
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×5
  • Tile 1 x 6 with Groove White Part 6636 Element 6548296 or 663601 ×2

Bricks 37 pieces

  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×3
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×3
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×1
  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 1 x 3 Red Part 3622 Element 362221 ×3
  • Brick 1 x 4 Red Part 3010 Element 301021 ×3
  • Brick 1 x 8 Red Part 3008 Element 300821 ×2
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×6
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×3
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×5
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×2

Plates Special 36 pieces

  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×6
  • Bracket 2 x 2 - 2 x 2 Blue Part 3956 Element 6019215 or 395623 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Dark Bluish Gray Part 6019 Element 4216973 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Dark Bluish Gray Part 3794b Element 4211119 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Bluish Gray Part 2540 Element 4211632 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Red Part 3794b Element 379421 ×10
  • Plate Special 2 x 6 x 2/3 with 4 Studs on Side, 1 Support Wall on Bottom Red Part 87609 Element 4565431 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] White Part 60478 Element 6552131 or 4515364 ×4
  • Plate Special 1 x 8 with Door Rail White Part 4510 Element 6619290 or 4501853 ×2

Plates Wedged 36 pieces

  • Wedge Plate 6 x 6 Cut Corner Black Part 6106 Element 4106977 or 610626 ×8
  • Wedge Plate 4 x 2 Left Dark Bluish Gray Part 41770 Element 4210788 ×2
  • Wedge Plate 4 x 2 Right Dark Bluish Gray Part 41769 Element 4210782 ×2
  • Wedge Plate 4 x 4 with 2 x 2 Cutout Dark Bluish Gray Part 43719 Element 6430611 or 6275402 ×4
  • Wedge Plate 4 x 6 Cut Corners Dark Bluish Gray Part 32059 Element 4521572 or 4210652 ×2
  • Wedge Plate 6 x 3 Left Dark Bluish Gray Part 54384 Element 4290149 ×1
  • Wedge Plate 6 x 3 Right Dark Bluish Gray Part 54383 Element 4290150 ×1
  • Wedge Plate 4 x 4 Cut Corner Red Part 30503 Element 6278445 or 6065012 ×2
  • Wedge Plate 3 x 3 Cut Corner White Part 2450 Element 6601842 or 4280148 ×6
  • Wedge Plate 3 x 4 with Stud Notches White Part 48183 Element 4238793 or 4181037 ×2
  • Wedge Plate 4 x 2 Left White Part 41770 Element 6552119 or 4161326 ×1
  • Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×1
  • Wedge Plate 8 x 8 Cut Corner White Part 30504 Element 4585737 or 4288309 ×4

Technic Pins 30 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×12
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×8
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2

Bricks Curved 25 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Red Part 6091 Element 6184782 or 609121 ×4
  • Brick Curved 1 x 4 x 1 1/3 No Studs, Lowered Inside Support Red Part 6191 Element 6074787 or 4585963 ×6
  • Brick Curved 2 x 4 x 1 1/3 Red Part 6081 Element 4116617 or 608121 ×6
  • Brick Curved Inverted 6 x 1 Red Part 42023 Element 4160406 ×2
  • Brick Arch 1 x 4 White Part 3659 Element 6550145 or 365901 ×2
  • Brick Curved 4 x 1 No Studs [Stud Holder with Asymmetric Ridges] White Part 61678 ×3
  • Brick Curved Inverted 6 x 1 White Part 42023 Element 4160403 ×2

Technic Beams 21 pieces

  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×4
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×4
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×3
  • Technic Beam 1 x 2 Thin Dark Bluish Gray Part 41677 Element 6338422 or 4210980 ×2
  • Technic Beam 1 x 4 Thin Dark Bluish Gray Part 32449 Element 6327561 or 4210749 ×2
  • Technic Beam 3 x 3 L-Shape Thin Light Bluish Gray Part 32056 Element 6271815 or 4211574 ×4

Technic Bricks 17 pieces

  • Technic Brick 1 x 1 with Pin Hole Blue Part 6541 Element 4119014 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×10
  • Technic Brick 1 x 4 [3 Pin Holes] Tan Part 3701 Element 4234365 or 370105 ×4
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Yellow Part 32064b ×1

Tiles Special 12 pieces

  • Tile Special 1 x 1 with Clip with Rounded Tips Blue Part 12825 Element 6030715 or 4194424 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Metallic Silver Part 2412b Element 6051422 or 4579833 ×6

Bricks Round and Cones 10 pieces

  • Cone 2 x 2 x 2, Open Stud Black Part 3942c Element 6092664 or 6022160 ×1
  • Cone 3 x 3 x 2 Black Part 6233 Element 4500978 or 4193529 ×1
  • Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×4
  • Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×2
  • Brick Round 2 x 2 with Axle Hole Trans-Clear Part 3941 Element 6514281 or 6273152 ×2

Plates Round Curved and Dishes 9 pieces

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Bluish Gray Part 2654 Element 4613980 or 4278274 ×3
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Orange Part 4740 Element 6245295 or 3006347 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×4

Technic Axles 9 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×3

Technic Connectors 9 pieces

  • Technic Axle and Pin Connector Angled #1 Dark Bluish Gray Part 32013 Element 32013199 or 6296856 ×4
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×1
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×2
  • Technic Axle and Pin Connector Perpendicular Yellow Part 6536 Element 6261367 or 4173666 ×2

Bricks Wedged 7 pieces

  • Brick Wedged, Angled 4 x 2 Left Red Part 41768 Element 6449915 or 6093580 ×1
  • Brick Wedged, Angled 4 x 2 Right Red Part 41767 Element 6449914 or 6093579 ×1
  • Brick Wedged, Curved 6 x 4 Triple Red Part 43712 Element 6621800 or 6409628 ×2
  • Brick Wedged, Curved Inverted 6 x 2 Left Red Part 41765 Element 6447087 or 6064181 ×1
  • Brick Wedged, Curved Inverted 6 x 2 Right Red Part 41764 Element 6447090 or 6064184 ×1
  • Brick Wedged, Curved 6 x 4 Triple White Part 43712 Element 4179869 ×1

Bricks Special 6 pieces

  • Brick Special 1 x 2 with 2 Pins, Round Pin Holes Light Bluish Gray Part 30526 Element 4211660 ×4
  • Brick Special 1 x 4 with 4 Studs on One Side White Part 30414 Element 6550167 or 4143254 ×2

Panels 6 pieces

  • Panel 1 x 1 x 1 Corner White Part 6231 Element 6619293 or 623101 ×2
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thick Wall] White Part 43337 Element 4173477 ×2

Wheels and Tyres 6 pieces

  • Tyre 17.5 x 6 with Shallow Staggered Treads Black Part 51011 Element 4515290 or 4239237 ×1
  • Tyre Offset Tread with Center Band 23 x 7 Black Part 61254 Element 4541455 ×2
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×1
  • Wheel 18 x 8 with Fake Bolts and Shallow Spokes Light Bluish Gray Part 56902 Element 4499259 ×2

Bars, Ladders and Fences 2 pieces

  • Lever Small Base with Black Lever Blue Part 298c02 Element 4296152 or 4163988 1 spare in the box ×2

Electronics 2 pieces

  • Light Brick 2 x 3 x 1 1/3 with Dark Bluish Gray Base [Red LED] Trans-Red Part 54869 Element 6577222 or 6555881 ×2

Technic Bushes 2 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×2

Technic Special 2 pieces

  • Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Light Bluish Gray Part 32125 Element 4262978 or 4211842 ×2

Transportation - Land 2 pieces

  • Wheel Arch, Mudguard 4 x 2 1/2 x 2 with 2 x 2 Plate White Part 50745 Element 4259940 ×2

Transportation - Sea and Air 2 pieces

  • Engine, Large Light Bluish Gray Part 43121 Element 4211767 ×2

Windscreens and Fuselage 2 pieces

  • Windscreen 7 x 4 x 2 Round Extended Front Edge Trans-Brown Part 89762 Element 4581452 ×2

Tick each piece as you find it, or mark it missing.

When a piece really is missing

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