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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.

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6377 Delivery Center

291 pieces in 114 part and color combinations, plus 4 minifigures.

LEGO counts 305 pieces. This inventory comes from a separate parts catalog and lists 307, including the 16 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.

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

White 74 pieces

  • Antenna 1 x 4 with Rounded Top White Part 3957a ×2
  • Bar 1 x 4 x 2 with Studs White Part 4083 Element 408301 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×6
  • Brick 1 x 2 with Black Grill Print White Part 3004pr9981 ×1
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×2
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×2
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×1
  • Brick Sloped 45° 2 x 2 with 12 Buttons, 3 Red Lamps, Black Panel Print White Part 3039pr9996 ×1
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×6
  • Brick Wedged, Sloped 4 x 4 Taper White Part 4858 Element 485801 ×1
  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections White Part 4856a ×2
  • Door 1 x 3 x 1 Left White Part 3822 Element 4527637 or 4161547 ×2
  • Door 1 x 3 x 1 Right White Part 3821 Element 4537987 or 4527638 ×2
  • Door 1 x 4 x 5 Right with 6 Panes White Part 73312 ×1
  • Door Sliding - Type 1 White Part 4511 Element 4198601 ×1
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×4
  • Panel 1 x 2 x 2 [Solid Studs] White Part 4864a Element 4113016 or 486401 ×2
  • Panel 1 x 4 x 3 [Solid Studs] White Part 4215a ×2
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×2
  • Plate 1 x 10 White Part 4477 Element 6552113 or 6550148 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×5
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×1
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Seat / Chair 2 x 2 White Part 4079 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×6
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×4
  • Turntable 2 x 2 Plate, Base White Part 3680 Element 368001 ×1
  • Wedge Plate 3 x 4 without Stud Notches White Part 4859 Element 4215973 or 4199395 ×2
  • Window 1 x 4 x 3 White Part 3853 Element 4175392 or 385301 ×2

Red 64 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×11
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×14
  • Brick 1 x 3 Red Part 3622 Element 362221 ×8
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 1 x 6 Red Part 3009 Element 300921 ×5
  • Brick Sloped 45° 2 x 1 with Bottom pin, with White Rotary Dial Print Red Part 3040bpr0004 ×1
  • Brick Sloped 45° 2 x 2 with Computer Screen Print Red Part 3039pr0026 ×1
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Red Part 4287a ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 Also in Trans-Red ×5
  • Plate 1 x 10 Red Part 4477 Element 447721 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 6 Red Part 3666 Element 366621 ×3
  • Plate 1 x 8 Red Part 3460 Element 346021 ×1
  • Plate 2 x 6 Red Part 3795 Element 379521 ×2
  • Plate Special 1 x 8 with Door Rail Red Part 4510 Element 6078594 or 4616360 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel Red Part 3829c01 Element 9552 ×2

Blue 49 pieces

  • Brick Round 1 x 1 Open Stud Blue Part 3062b Element 306223 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Blue Part 3040b Element 4121936 or 304023 ×2
  • Brick Sloped 45° 3 x 4 Double / 33° Blue Part 4861 Element 4512826 or 4187744 ×1
  • Engine Smooth Large, Cone Back [1 x 2 Thin Top Plate] Blue Part 4868a ×2
  • Hinge Tile 1 x 4 Blue Part 4625 Element 462523 ×3
  • Hinge Vehicle Roof 4 x 4 Blue Part 4213 Element 4240387 or 421323 ×3
  • Hinge Vehicle Roof Holder 1 x 4 Blue Part 4315 Element 4256388 or 4167102 ×2
  • Hinge Vehicle Roof Holder 1 x 4 x 2 Blue Part 4214 Element 421423 ×1
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×2
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×5
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×1
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×4
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×1
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×2
  • Plate 6 x 12 Blue Part 3028 Element 6186644 or 302823 ×1
  • Slope 45° 4 x 4 Double with Hinge Blue Part 4857 Element 485723 ×3
  • Tail Wedge with Yellow Cargo Boxes Print Blue Part 4867pr0007 ×1
  • Tile 1 x 1 with Groove Blue Part 3070b Element 4206330 or 307073 ×4
  • Tile 2 x 2 with Groove Blue Part 3068b Element 306823 ×1
  • Vehicle Base 4 x 5 with Wheel Arches, 2 x 2 Opening Blue Part 4211 Element 421123 ×2
  • Wedge Plate 3 x 4 without Stud Notches Blue Part 4859 ×1

Black 45 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×1
  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Forklift Mast and Carriage, Wide 1 x 2 Hinge Plate and Light Gray Wide Forks [Complete Assembly] Black Part 4518ac01 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Solid Studs Black Part 4276a ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 4 x 8 Black Part 3035 Element 303526 ×2
  • Plate 6 x 16 Black Part 3027 Element 302726 ×1
  • Plate Special 2 x 2 with Wheels Red Black Part 122c01 ×4
  • Support Round 2 x 2 x 2 Stand with Blocked Center Hole Black Part 3940a ×11
  • Tyre 14 x 4 Smooth Small Single Black Part 3139 Element 313926 ×6
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×8

Light Gray 29 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Light Gray Part 4871 Element 487102 ×1
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed Light Gray Part 4854 Element 485402 ×2
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs] Light Gray Part 4855 Element 485502 ×2
  • Engine Centre - Smooth Large Light Gray Part 4869 Element 4188629 or 486902 ×2
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×2
  • Turntable 2 x 2 Plate, Base Light Gray Part 3680 Element 4242118 or 368002 ×1
  • Wedge Plate 3 x 4 without Stud Notches Light Gray Part 4859 ×2
  • Wedge Plate 4 x 8 Tail Light Gray Part 3474 Element 347402 ×1
  • Wedge, Plate 7 x 12 Wing Left Light Gray Part 3586 Element 358602 ×1
  • Wedge, Plate 7 x 12 Wing Right Light Gray Part 3585 Element 358502 ×1
  • Wheel 8 x 6 Light Gray Part 4624 Element 462402 ×6
  • Wheel Holder 2 x 2 Thin with Split Wheel Clip Pins Light Gray Part 4870 Element 487002 ×3

Yellow 9 pieces

  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×9

Trans-Red 7 pieces

  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 Also in Red ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×3

Trans-Clear 6 pieces

  • Brick Sloped 33° 3 x 6 Trans-Clear Part 3939 Element 4190513 or 4124070 ×2
  • Glass for Window 1 x 4 x 3 [Old Style - Circular Indent] Trans-Clear Part 3855a ×2
  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×2

Trans-Yellow 4 pieces

  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×4

[No Color/Any Color] 2 pieces

  • Sticker Sheet 1 for Sets 6377-1, 6391-1 [No Color/Any Color] Part 195645 ×1
  • Sticker Sheet 2 for Sets 1966-1, 6373-1, 6377-1, 6391-1 [No Color/Any Color] Part 195986 ×1

Trans-Green 1 piece

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1

Trans-Light Blue 1 piece

  • Windscreen 3 x 4 x 1 1/3 with 6 Studs on Top Trans-Light Blue Part 4866 ×1

Minifigures 4 figures

  • Construction Worker, Blue Overalls, Red Hard Hat Minifigure, checked as a whole figure ×1
  • Man, Blue Overalls, Red Cap (3626a Head) Minifigure, checked as a whole figure ×2
  • Pilot, Black Suit with Tie and Airplane Badge, White Hat 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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