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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.

Function Set

Checking

9454 Function Set

350 pieces in 66 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

Light Gray 121 pieces

  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×6
  • Hinge Brick 1 x 4 [Lower] Light Gray Part 3831 Element 383102 ×4
  • Hinge Brick 1 x 4 [Upper] Light Gray Part 3830 Element 383002 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Gray Part 73983 Element 74066 ×2
  • Hook, Plate 1 x 2 with Crane Hook Left Light Gray Part 3127 Element 312702 ×3
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×6
  • Plate Special 1 x 4 Offset with Bar Holes Light Gray Part 4590 Element 4248161 or 4114067 ×2
  • Propeller 4 Blade 5 Diameter with Rounded Ends, Open Hub Light Gray Part 2479 Element 247902 ×6
  • Technic Bush 1/2 Toothed Type II [X Opening] Light Gray Part 4265b Element 4100501 or 657702 ×13
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×12
  • Technic Shock Absorber 6.5L with Normal Spring [Complete Assembly] Light Gray Part 73129 Element 73129 ×6
  • Technic Steering Pulley Large Light Gray Part 3736 Element 373602 ×6
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×6
  • Tile 1 x 1 with Groove Light Gray Part 3070b Element 307052 or 307002 ×5
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×4
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×4
  • Tile 1 x 8 with Groove Light Gray Part 4162 Element 416202 ×4
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×4
  • Vehicle Track, Train, Slotted Rail Straight Light Gray Part 3228b Element 322802 ×24

Red 69 pieces

  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×6
  • Crane Arm Outside, Narrow, 15 Studs Red Part 2350a ×3
  • Hinge Brick 1 x 4 [Lower] Red Part 3831 Element 6512257 or 6397573 ×4
  • Hinge Brick 1 x 4 [Upper] Red Part 3830 Element 6397607 or 6011464 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Red Part 73983 Element 6102786 or 74230 ×2
  • Plate Special 1 x 4 Offset with Bar Holes Red Part 4590 Element 6302650 or 6218227 ×2
  • Plate Special 1 x 4 with Towball Red Part 3184 Element 318421 ×3
  • Plate Special 1 x 4 with Towball Socket, Long, 2 Slots Red Part 3183a ×3
  • Plate Special 2 x 2 with Towball Red Part 3729 Element 372921 ×3
  • Plate Special 2 x 2 with Towball Socket, Short, 4 Slots Red Part 3730 Element 373021 ×3
  • Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×6
  • String Reel Winch 2 x 4 x 2 (Light Gray Drum) Red Part 73037 Element 4190523 or 4109857 ×3
  • Tile 1 x 1 with Groove Red Part 3070b Element 307021 ×5
  • 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 ×4
  • Tile 1 x 8 with Groove Red Part 4162 Element 416221 ×4
  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×4
  • Tile Special 2 x 2 with Top Pin Red Part 2460 Element 246021 ×3
  • Turntable 4 x 4 Square Base with Top, Complete Assembly Red Part 3403c01 Element 4221665 or 4143678 ×3

Black 61 pieces

  • Crane Arm Centre, 16 x 2 x 1 Black Part 2351 Element 235126 ×6
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×6
  • Technic Axle 12 Black Part 3708 Element 370826 ×6
  • Technic Axle 2 Black Part 3704 Element 370426 ×6
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×6
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 6 Black Part 3706 Element 370626 ×6
  • Technic Axle 8 Black Part 3707 Element 370726 ×6
  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Black Part 85546 ×6
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×6

Trans-Dark Blue 54 pieces

  • Brick 1 x 2 without Bottom Tube Trans-Dark Blue Part 3065 Element 6514264 or 6244906 ×16
  • Brick 1 x 6 with No Bottom Tubes Trans-Dark Blue Part 3067 ×6
  • Panel 3 x 2 x 5 2/3 Trans-Dark Blue Part 2448 ×12
  • Panel 3 x 2 x 6 Trans-Dark Blue Part 2466 Element 4109865 or 246643 ×12
  • Panel 3 x 3 x 6 Corner Convex Trans-Dark Blue Part 2468 ×8

Yellow 45 pieces

  • Brick Special 1 x 1 with Headlight Yellow Part 4070 Element 407024 ×6
  • Brick Special 1 x 2 with Pin Yellow Part 2458 Element 245824 ×3
  • Crane Arm Outside, Narrow, 15 Studs Yellow Part 2350a ×3
  • Hinge Brick 1 x 4 [Lower] Yellow Part 3831 Element 6137916 or 4241119 ×4
  • Hinge Brick 1 x 4 [Upper] Yellow Part 3830 Element 6137910 or 4241117 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Yellow Part 73983 Element 6102768 or 4205196 ×2
  • Plate Special 1 x 4 Offset with Bar Holes Yellow Part 4590 Element 4248165 or 4114316 ×2
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 ×5
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×4
  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×4
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×4
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×4

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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