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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.

Boost My City Vehicle Set

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40303 Boost My City Vehicle Set

80 pieces in 44 part and color combinations.

LEGO counts 79 pieces. This inventory comes from a separate parts catalog and lists 80; 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.

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Piece checklist

Black 17 pieces

  • Antenna 8H Whip Black Part 2569 Element 6265148 or 6164379 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Black Part 99780 Element 6020193 ×3
  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Black Part 30396 Element 4144567 or 4143351 ×1
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×1
  • Lattice 3 x 6 Module with Studs Black Part 23444 Element 6172984 or 6138603 ×1
  • 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 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Black Part 60470b Element 6310268 or 4556158 ×1
  • Tool Hammer / Mallet Large Black Part 4522 Element 452226 ×1
  • Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1

Dark Bluish Gray 14 pieces

  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×2
  • Chain 16L [21 Links] Dark Bluish Gray Part 60169 Element 6258887 or 4516456 ×1
  • Equipment Binoculars Dark Bluish Gray Part 30162 Element 4587887 or 4211051 ×1
  • Equipment Shovel [Rounded Handle End] Dark Bluish Gray Part 3837 Element 4211006 ×1
  • Fence Lattice 1 x 4 x 1 Dark Bluish Gray Part 3633 Element 4219725 ×2
  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Bluish Gray Part 15573 Element 6092572 ×2
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Dark Bluish Gray Part 92593 Element 4598769 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×1

Light Bluish Gray 9 pieces

  • Bar 1 x 6 [Closed Studs] Light Bluish Gray Part 6140 Element 6415608 or 4211524 ×1
  • Exhaust Pipe with Technic Pin - Flat End, Rounded Hole Light Bluish Gray Part 14682 Element 6044706 ×2
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Light Bluish Gray Part 88072 Element 6261353 or 4611702 ×1
  • Plate Special 1 x 2 with Pin Hole Underneath Light Bluish Gray Part 18677 Element 6168633 or 6089147 ×2
  • Tile Special 1 x 1 with Clip with Rounded Edges Light Bluish Gray Part 15712 Element 6308012 or 6071229 ×3

Trans-Orange 8 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×2
  • Wave / Flame Rounded with Base Rim Trans-Orange Part 6126b Element 6167741 or 4261397 ×6

Flat Silver 6 pieces

  • Chain 6L [5 Links] Flat Silver Part 92338 Element 6323689 or 6064049 ×1
  • Engine / Air Scoop 2 x 2 Flat Silver Part 50943 Element 6076604 ×1
  • Weapon Gun Ray / Sci Fi - Rounded Heat Diffusers Flat Silver Part 13608 Element 6046398 ×4

Trans-Yellow 6 pieces

  • Tile Round 1 x 1 Trans-Yellow Part 98138 Element 6514193 or 6274740 1 spare in the box ×6

Yellow 5 pieces

  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30386 Element 4140704 ×2
  • Hinge Brick 1 x 4 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30387 Element 4218728 or 4144568 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Yellow Part 3176 Element 4188313 or 4141738 ×2

Red 4 pieces

  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×4

Blue 2 pieces

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

Trans-Dark Blue 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Dark Blue Part 54200 Element 6245256 or 4244366 1 spare in the box ×2

Trans-Light Blue 2 pieces

  • Tile Round 1 x 1 Trans-Light Blue Part 98138 Element 6514192 or 6274739 1 spare in the box ×2

White 2 pieces

  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×1

Dark Azure 1 piece

  • Spoiler 2 x 4 with Handle [Plain] Dark Azure Part 98834 Element 6329153 or 6218398 ×1

Orange 1 piece

  • Brick Curved 4 x 1 Double, No Studs Orange Part 93273 Element 4650977 ×1

[No Color/Any Color] 1 piece

  • Poster, City, Vehicles Print [No Color/Any Color] Part 6242040 Element 6242044 or 6242040 ×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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