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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.

2001 - Unused Parts Database Set

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DATABASE-2001 2001 - Unused Parts Database Set

69 pieces in 69 part and color combinations.

This inventory lists 1 more pieces than the piece count; the catalog data disagrees and is under review.

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

Hinges, Arms and Turntables 17 pieces

  • Hinge Plate 1 x 4 Swivel Base with Hole Black Part 2429 Element 242926 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Black Part 2430 Element 243026 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole Blue Part 2429 Element 4120213 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Blue Part 2430 Element 4120214 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole Dark Gray Part 2429 Element 4143379 or 4111852 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Dark Gray Part 2430 Element 4143380 or 4111904 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole Green Part 2429 Element 4187929 or 4157105 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Green Part 2430 Element 4187930 or 4157104 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole Light Gray Part 2429 Element 242902 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Light Gray Part 2430 Element 243002 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole Red Part 2429 Element 242921 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Red Part 2430 Element 243021 ×1
  • Hinge Plate 2 x 2 Pivot Red Part 313 Element 4106904 or 311271 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole White Part 2429 Element 4287155 or 242901 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] White Part 2430 Element 4287156 or 243001 ×1
  • Hinge Plate 1 x 4 Swivel Base with Hole Yellow Part 2429 Element 4205194 or 242924 ×1
  • Hinge Plate 1 x 4 Swivel Top [Solid Pin] Yellow Part 2430 Element 4205195 or 243024 ×1

Bricks 14 pieces

  • Brick 2 x 4 Bright Green Part 3001 Element 6014481 or 4177580 ×1
  • Brick 2 x 4 Glitter Trans-Light Blue Part 3001 Element 6266093 ×1
  • Brick 2 x 4 Glow in Dark White Part 3001 Element 6543619 ×1
  • Brick 2 x 4 Medium Brown Part 3001 Element 6450816 Also in Umber Brown ×1
  • Brick 2 x 4 Milky White Part 3001 ×1
  • Brick 2 x 4 Pearl Gold Part 3001 Element 6240029 ×1
  • Brick 2 x 4 Reddish Orange Part 3001 Element 6515579 ×1
  • Brick 2 x 4 Trans-Brown Part 3001 Element 6089865 ×1
  • Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports Trans-Clear Part 3009b ×1
  • Brick 2 x 4 Trans-Neon Green Part 3001 Element 6164137 ×1
  • Brick 2 x 4 Trans-Neon Orange Part 3001 Element 6051246 ×1
  • Brick 2 x 4 Umber Brown Part 3001 Element 6649109 Also in Medium Brown ×1
  • Brick 2 x 4 Warm Tan Part 3001 Element 6457359 ×1
  • Brick 2 x 4 x 3 with 'LEGOLAND Japan', '2nd', Minifigure Print Yellow Part 30144pr9839 ×1

Bars, Ladders and Fences 11 pieces

  • Lever Small Black Part 4593 Element 459376 or 459326 ×1
  • Lever Small Base Black Part 4592 Element 459226 ×1
  • Lever Small Base Blue Part 4592 Element 4296153 or 4168070 ×1
  • Lever Small Light Gray Part 4593 Element 459352 or 459302 ×1
  • Lever Small Base Light Gray Part 4592 Element 459202 ×1
  • Lever Small Base Red Part 4592 Element 459221 ×1
  • Lever Small Base Tan Part 4592 Element 4129559 ×1
  • Lever Small White Part 4593 Element 6045548 or 4585625 ×1
  • Lever Small Base White Part 4592 Element 459201 ×1
  • Lever Small Yellow Part 4593 Element 459374 or 459324 ×1
  • Lever Small Base Yellow Part 4592 Element 459224 ×1

Minifig Upper Body 9 pieces

  • Minifig Hand Black Part 3820 Element 382026 ×1
  • Minifig Hand Brown Part 3820 Element 4140298 ×1
  • Minifig Hand Dark Gray Part 3820 Element 4107481 ×1
  • Minifig Hand Light Gray Part 3820 Element 4144450 ×1
  • Minifig Hand Medium Blue Part 3820 Element 4143202 ×1
  • Minifig Hand Pearl Light Gold Part 3820 Element 4141594 ×1
  • Minifig Hand Red Part 3820 Element 4619418 or 4159055 ×1
  • Minifig Hand White Part 3820 Element 382001 ×1
  • Minifig Hand Yellow Part 3820 Element 382024 ×1

Duplo, Quatro and Primo 6 pieces

  • Duplo Brick 1 x 2 x 2 with 'BRICK OR TREAT', 'SAFE HALLOWEEN CELEBRATION!', 'LEGOLAND CALIFORNIA' and 'Happy Halloween', Wizard Minifigure with Pumpkin Print Black Part 4066pr9845 ×1
  • Duplo Brick 1 x 2 x 2 with LEGO Logo / 'Happy Halloween' and Wizard Print Black Part 4066pr0165 ×1
  • Duplo Brick 1 x 2 x 2 with 'THE INVASION BEGINS', 'SPRING 2001', 'LEGOLAND CALIFORNIA' and 'LIFE ON MARS', 'THE SHOW' Print Dark Orange Part 4066pr9861 ×1
  • Duplo Brick 1 x 2 x 2 with 'LEGOLAND CALIFORNIA', 'LEGO TECHNIC COASTER' and 'Spring 2001' Print Green Part 4066pr9862 ×1
  • Duplo Brick 1 x 2 x 2 with 'Happy Holidays' and 'LEGOLAND CALIFORNIA' Print Red Part 4066pr9844 ×1
  • Duplo Brick 1 x 2 x 2 with 'LEGO IMAGINATION CENTER' and 'Downtown Disney ® District Anaheim Grand Opening January 2001' Print Yellow Part 4066pr9860 ×1

Belville, Scala and Fabuland 2 pieces

  • Scala, Building, Support Connector Brick, Pin Hole White Part 6810 ×1
  • Scala, Building, Support Connector with Pin White Part 6808 Element 4105123 ×1

Minifig Lower Body 2 pieces

  • Leg, Left Medium Blue Part 3817 Element 4624621 or 4143197 ×1
  • Leg, Right Medium Blue Part 3816 Element 4624620 or 4143195 ×1

Technic Steering, Suspension and Engine 2 pieces

  • Technic Shock Absorber 6.5L Cylinder Blue Part 4255 ×1
  • Technic Shock Absorber 6.5L Cylinder Dark Turquoise Part 4255 ×1

Wheels and Tyres 2 pieces

  • Tyre for Bicycle Wheel Black Part 2807 ×1
  • Wheel Bicycle without Tire Trans-Clear Part 4720 ×1

Bricks Sloped 1 piece

  • Brick Sloped 45° 10 x 2 x 2 Double Orange Part 30180 Element 4168910 ×1

Bricks Special 1 piece

  • Brick Special 1 x 1 Studs on 4 Sides Dark Olive Green Part 4733 ×1

Large Buildable Figures 1 piece

  • Large Figure Mask Miru Trans-Neon Green Part 32565 Element 4166144 ×1

Tools 1 piece

  • Motor Wind-Up 4 x 10 x 3 Key Rust Part 4234 ×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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