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LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

T3-Trike

Checking

7312 T3-Trike

94 pieces in 46 part and color combinations, plus 1 minifigure.

The piece count includes the 5 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

White 22 pieces

  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×1
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×2
  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] White Part 30237a ×2
  • Brick Special 2 x 2 with Pin and Axle Hole White Part 6232 Element 6403936 or 4143137 ×3
  • Dish 2 x 2 Inverted [Radar] White Part 4740 Element 6601845 or 474001 ×3
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Plate 4 x 6 White Part 3032 Element 303201 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] White Part 4085c Element 408501 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] White Part 2444 Element 244401 ×2
  • Technic Beam 1 x 7 Thick White Part 32524 Element 6564912 or 6318056 ×3
  • Tile Round 2 x 2 with Light Blue Vitruvian Minifig Print White Part 4150pr0043 Element 4143038 ×1

Light Gray 20 pieces

  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×2
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Light Gray Part 3747a Element 4109695 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×1
  • Equipment Metal Detector Light Gray Part 4479 Element 4118715 or 447902 ×1
  • Flexible Ribbed Hose 8mm Ends 12L with Tabbed Dark Gray Ends Light Gray Part 758c01 Element 4142960 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Light Gray Part 4081b Element 408102 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Brick 1 x 2 [2 Pin Holes] Light Gray Part 32000 Element 3200002 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 1 spare in the box ×2
  • Wheel Hard Plastic Spoked Light Gray Part 30324 Element 4142996 ×3

Black 18 pieces

  • Antenna 8H Whip Black Part 2569 Element 6265148 or 6164379 ×1
  • Bar 6.6L with Stop Ring [Umbrella Stand] Black Part 4095 Element 409526 ×1
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×2
  • Brick Sloped Inverted 45° 6 x 4 Double with 4 x 4 Recessed Black Part 30283 Element 4119370 ×1
  • Brick Special 1 x 2 with Grille Black Part 2877 Element 287726 ×2
  • Hinge Vehicle Roof Holder 1 x 4 Black Part 4315 Element 4250225 or 431576 ×1
  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×1
  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×3
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×3
  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×3

Dark Gray 11 pieces

  • Brick 2 x 3 Dark Gray Part 3002 Element 4114320 or 300227 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Gray Part 3040b Element 4121970 or 4109985 ×4
  • Brick Special 1 x 2 with 2 Pins, Round Pin Holes Dark Gray Part 30526 Element 4142959 ×2
  • Plate 2 x 4 Dark Gray Part 3020 Element 4112232 or 302027 ×2
  • Plate 2 x 6 Dark Gray Part 3795 Element 379527 ×1
  • Tile 1 x 2 with Joystick and Vehicle Control Panel Print Dark Gray Part 3069bpr0090 Element 4120171 ×1

Blue 8 pieces

  • Plate 1 x 2 Blue Part 3023 Element 302323 ×3
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×1
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Blue Part 32054 Element 4140800 or 4107741 ×4

Medium Blue 6 pieces

  • Brick Sloped 33° 3 x 1 Medium Blue Part 4286 Element 4143136 ×2
  • Brick Sloped 45° 2 x 2 Medium Blue Part 3039 Element 6092038 or 4143135 ×4

Trans-Red 3 pieces

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

Yellow 3 pieces

  • Rubber Band 15mm [Square Cross Section] Yellow Part 23229 Element 4125669 or 4124335 ×3

Trans-Clear 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box ×2

Trans-Brown 1 piece

  • Windscreen 6 x 6 x 3 Canopy Half Sphere with Hinge [Plain] Trans-Brown Part 30083 Element 4143138 ×1

Minifigures 1 figure

  • Spaceman, Doc 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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