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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.

Basic Building Set

Checking

730-2 Basic Building Set

422 pieces in 123 part and color combinations, plus 2 minifigures.

The piece count includes the 8 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.

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Piece checklist

Bricks 128 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×20
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×20
  • Brick 1 x 3 Red Part 3622 Element 362221 ×16
  • Brick 1 x 4 Red Part 3010 Element 301021 ×14
  • Brick 1 x 6 Red Part 3009 Element 300921 ×14
  • Brick 1 x 8 Red Part 3008 Element 300821 ×4
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×6
  • Brick 2 x 3 without Cross Supports Red Part 3002a ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2
  • Brick 2 x 8 Red Part 3007 Element 6036408 or 300721 ×1
  • Brick 2 x 2 without Inside Ridges Trans-Clear Part 6223 Element 6514093 or 6239418 ×1
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×14
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×6
  • Brick 1 x 2 with Black Grill Print Yellow Part 3004pr9981 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×2
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×2
  • Brick 2 x 3 without Cross Supports Yellow Part 3002a ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×1

Bricks Sloped 104 pieces

  • Brick Sloped 45° 2 x 1 Double / Inverted with Hollow Bottom Black Part 3049c Element 4163371 ×1
  • Brick Sloped 45° 2 x 1 Triple with Ovoid Bottom Pin Black Part 3048c Element 304826 ×2
  • 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 ×8
  • Brick Sloped 45° 2 x 2 Double Black Part 3043 Element 4163373 or 304326 ×1
  • Brick Sloped 45° 2 x 2 Double Concave Black Part 3046a Element 6477383 or 4218890 ×12
  • Brick Sloped 45° 2 x 2 Double Convex Black Part 3045 Element 4189064 or 304526 ×12
  • Brick Sloped 45° 2 x 3 Black Part 3038 Element 303826 ×8
  • Brick Sloped 45° 2 x 4 Black Part 3037 Element 303726 ×10
  • Brick Sloped 45° 2 x 4 Double Black Part 3041 Element 4189063 or 304126 ×3
  • Brick Sloped 45° 2 x 8 Black Part 4445 Element 4163334 ×6
  • Brick Sloped 33° 3 x 1 Blue Part 4286 Element 428623 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×6
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×4
  • Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×8
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×4
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×2
  • Brick Sloped 33° 3 x 2 White Part 3298 Element 329801 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Yellow Part 3040b Element 4121965 or 304024 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×4

Plates 45 pieces

  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate 2 x 8 Black Part 3034 Element 303426 ×2
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 6 x 10 Black Part 3033 Element 303326 ×2
  • Plate 6 x 16 Black Part 3027 Element 302726 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×6
  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 1 x 6 Red Part 3666 Element 366621 ×2
  • Plate 1 x 8 Red Part 3460 Element 346021 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×1
  • Plate 4 x 6 Red Part 3032 Element 303221 ×1
  • Plate 6 x 6 Red Part 3958 Element 4144302 ×1
  • 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 ×2
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×6
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×2

Windows and Doors 29 pieces

  • Window 1 x 2 x 3 Pane Red Part 3854 Element 4175391 or 385421 ×4
  • Glass for Window 1 x 4 x 3 Trans-Clear Part 3855 Element 4556520 or 4203330 ×2
  • Glass for Window 4 x 4 x 3 Roof Trans-Clear Part 4448 Element 4522040 or 4161146 ×2
  • Door 1 x 4 x 5 Left with Trans-Clear Glass White Part 47899c01 ×1
  • Door 1 x 4 x 5 Right with Trans-Clear Glass White Part 73194c01 Element 73194 ×1
  • Door 1 x 4 x 5 with 4 Panes, Squared Base White Part 3861b Element 4160992 or 386101 ×1
  • Door 1 x 4 x 6 White Part 3644 ×2
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] White Part 3081c01 Element 73594 ×2
  • Window 1 x 2 x 3 Shutter White Part 3856 Element 4177767 or 385601 ×4
  • Window 1 x 4 x 3 White Part 3853 Element 4175392 or 385301 ×4
  • Window 1 x 4 x 5 with Fixed Glass White Part 4347 ×2
  • Window 4 x 4 x 3 Roof White Part 4447 Element 4522041 or 4248245 ×2
  • Door 1 x 3 x 1 Left Yellow Part 3822 Element 6587460 or 4190511 ×1
  • Door 1 x 3 x 1 Right Yellow Part 3821 Element 6587459 or 4537985 ×1

Plants & Trees 18 pieces

  • Plant, Flower - Small Blue Part 3742 2 spares in the box ×6
  • Plant, Flower Stem Green Part 3741 Element 6277589 or 374128 ×4
  • Plant, Fruit Tree Green Part 3470 Element 347028 ×1
  • Plant, Pine Tree, Large, 4 x 4 x 6 2/3 Green Part 3471 Element 6248463 or 347128 ×1
  • Plant, Flower - Small Yellow Part 3742 2 spares in the box ×6

Bricks Round and Cones 17 pieces

  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×6
  • Cone 2 x 2 x 2, Blocked Open Stud Black Part 3942b ×1
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×8
  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×2

Hinges, Arms and Turntables 14 pieces

  • Hinge Vehicle Roof 4 x 4 Black Part 4213 Element 421326 ×1
  • Hinge Vehicle Roof Holder 1 x 4 x 2 Black Part 4214 Element 421426 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×2
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×2
  • Hinge Plate 1 x 2 with 2 Fingers and Solid Studs Yellow Part 4276a ×2
  • Hinge Plate 1 x 2 with 3 Fingers [Solid Studs] Yellow Part 4275a ×4
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top Yellow Part 4531 Element 4280162 or 4225512 ×2

Bars, Ladders and Fences 11 pieces

  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×1
  • Fence Lattice 1 x 4 x 1 Red Part 3633 Element 4187280 or 363321 ×4
  • Fence Lattice 1 x 4 x 2 White Part 3185 Element 6628214 or 4587272 ×6

Minifig Accessories 9 pieces

  • Equipment Frying Pan Black Part 4528 Element 452826 ×1
  • Equipment Saucepan Black Part 4529 Element 452926 ×1
  • Equipment Cup / Mug [Plain] Blue Part 3899 Element 389923 ×2
  • Bag / Briefcase Brown Part 4449 Element 4154856 or 444925 ×1
  • Equipment Brush / Push Broom Brown Part 3836 Element 383625 ×1
  • Equipment Shovel [Rounded Handle End] Dark Gray Part 3837 Element 383727 ×1
  • Tap 1 x 2 Base with Light Gray Spout Yellow Part 69c01 ×2

Plates Special 8 pieces

  • Plate Special 1 x 1 with Clip Vertical [Thin U Clip] Black Part 4085b ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 1 x 2 with Ladder Black Part 4175 Element 6285241 or 6179557 ×3
  • Plate Special 2 x 2 with Wheel Holders Light Gray Part 4600 Element 460002 ×2

Transportation - Land 8 pieces

  • Seat / Chair 2 x 2 White Part 4079 ×4
  • Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1
  • Vehicle Base 4 x 5 with Wheel Arches, 2 x 2 Opening Yellow Part 4211 Element 4261115 or 421124 ×1
  • Wheel Arch, Mudguard 2 x 4 Studded Yellow Part 3788 Element 378824 ×1
  • Wheel Arch, Mudguard 2 x 4 [Smooth] Yellow Part 3787 ×1

Wheels and Tyres 8 pieces

  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4
  • Wheel 8 x 6 Light Gray Part 4624 Element 462402 ×4

Containers 7 pieces

  • Cupboard 2 x 3 Drawer Red Part 4536 Element 453621 ×2
  • Cupboard 2 x 3 x 2 Door Red Part 4533 Element 453321 ×1
  • Cupboard 2 x 3 x 4 Door Red Part 4535 ×1
  • Cupboard 2 x 3 x 2 with Solid Studs Yellow Part 4532 Element 4289649 or 453224 ×2
  • Cupboard 2 x 3 x 4 Yellow Part 4534 ×1

Bricks Special 6 pieces

  • Brick Special 1 x 1 x 2 with Shutter Holder Red Part 3581 Element 4207299 or 358121 ×2
  • Brick Special 1 x 1 with Headlight Yellow Part 4070 Element 407024 ×4

Tiles 6 pieces

  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×4
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×2

Plates Round Curved and Dishes 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 ×2

Baseplates 1 piece

  • Baseplate 16 x 32 Light Gray Part 3857 Element 4219612 or 274802 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×1

Minifigures 2 figures

  • Man - Blue Torso, Black Legs Minifigure, checked as a whole figure ×1
  • Woman - White Torso, Red Legs 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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