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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.

Test Car

Checking

8865 Test Car

898 pieces in 130 part and color combinations.

LEGO counts 900 pieces. This inventory comes from a separate parts catalog and lists 898; 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

Plates 223 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×3
  • Plate 1 x 10 Black Part 4477 Element 447726 ×3
  • Plate 1 x 2 Black Part 3023 Element 302326 ×12
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×12
  • Plate 1 x 6 Black Part 3666 Element 366626 ×4
  • Plate 1 x 8 Black Part 3460 Element 346026 ×14
  • Plate 2 x 10 Black Part 3832 Element 383226 ×4
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×5
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×4
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×4
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×8
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×4
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×4
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×4
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×2
  • Plate 6 x 8 Blue Part 3036 Element 303673 or 303623 ×2
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 1 spare in the box ×10
  • Plate 1 x 10 Light Gray Part 4477 Element 447702 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×10
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×12
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×9
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×7
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×1
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×6
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×4
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 ×2
  • Plate 1 x 10 Red Part 4477 Element 447721 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×8
  • Plate 1 x 3 Red Part 3623 Element 362321 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×21
  • Plate 1 x 6 Red Part 3666 Element 366621 ×4
  • Plate 1 x 8 Red Part 3460 Element 346021 ×1
  • Plate 2 x 10 Red Part 3832 Element 383221 ×1
  • Plate 2 x 16 Red Part 4282 Element 428221 ×3
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate 2 x 8 Red Part 3034 Element 303421 ×2
  • Plate 4 x 10 Red Part 3030 Element 4535164 or 4188302 ×1
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×2
  • Plate 4 x 8 Red Part 3035 Element 303521 ×1
  • Plate 6 x 10 Red Part 3033 Element 6509008 or 6249097 ×4
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4

Technic Bricks 177 pieces

  • Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×7
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×14
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×1
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×8
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×4
  • Technic Brick 1 x 4 [3 Pin Holes] Blue Part 3701 Element 370123 ×8
  • Technic Brick 1 x 6 [5 Pin Holes] Blue Part 3894 Element 389423 ×14
  • Technic Brick 1 x 12 [11 Pin Holes] Light Gray Part 3895 Element 4195006 or 389502 ×7
  • Technic Brick 1 x 16 [15 Pin Holes] Light Gray Part 3703 Element 370302 ×12
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×9
  • Technic Brick 1 x 4 [3 Pin Holes] Light Gray Part 3701 Element 370102 ×11
  • Technic Brick 1 x 6 [5 Pin Holes] Light Gray Part 3894 Element 389402 ×16
  • Technic Brick 1 x 8 [7 Pin Holes] Light Gray Part 3702 Element 370202 ×4
  • Technic Brick 1 x 12 [11 Pin Holes] Red Part 3895 Element 389521 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Red Part 3703 Element 370321 ×11
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×6
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×28
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×8

Technic Pins 130 pieces

  • Technic Pin with Friction Ridges Lengthwise, without Center Slots Black Part 4459 ×113
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×8
  • Technic Axle Towball Light Gray Part 2736 Element 273602 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 1 spare in the box ×5

Technic Bushes 101 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 1 spare in the box ×59
  • Technic Bush 1/2 Toothed Type I [+ Opening] Light Gray Part 4265a Element 426502 1 spare in the box ×42

Technic Axles 69 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×10
  • Technic Axle 12 Black Part 3708 Element 370826 ×7
  • Technic Axle 2 Black Part 3704 Element 370426 ×6
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×12
  • Technic Axle 4 Black Part 3705 Element 370526 ×10
  • Technic Axle 6 Black Part 3706 Element 370626 ×17
  • Technic Axle 8 Black Part 3707 Element 370726 ×7

Bricks 40 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×2
  • Brick 1 x 2 Black Part 3004 Element 300426 ×10
  • Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support Black Part 3010a ×4
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×2
  • Brick 1 x 1 Light Gray Part 3005 Element 300502 ×4
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×3
  • Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support Light Gray Part 3010a ×3
  • Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports Light Gray Part 3009b ×2
  • Brick 1 x 1 Red Part 3005 Element 300521 ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×2
  • Brick 1 x 2 without Bottom Tube Trans-Red Part 3065 Element 6514263 or 6244905 ×4

Technic Gears 31 pieces

  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1
  • Technic Gear 14 Tooth Bevel Light Gray Part 4143 Element 414352 or 414302 ×4
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×10
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×5
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×7
  • Technic Gear Differential [Old Style, 28 Teeth] Light Gray Part 73071 ×1
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×3

Technic Connectors 29 pieces

  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×21
  • Technic Axle and Pin Connector Toggle Joint Toothed [without Slots] Light Gray Part 4273a ×8

Technic Steering, Suspension and Engine 29 pieces

  • Technic Link 1 x 6 without Stoppers Black Part 32005a Element 4629921 or 4530733 ×2
  • Technic Steering Wheel Large Black Part 2741 Element 4125213 ×1
  • Technic Steering Arm 6.5 x 2 with Towball Socket Squared, Un-Chamfered Blue Part 2738 Element 273823 ×4
  • Technic Engine Piston Square 2 x 2 - Old Light Gray Part 3652 Element 365202 ×4
  • Technic Shock Absorber 6.5L with Soft Spring, Standard Coil [Complete Assembly] Light Gray Part 76138 ×8
  • Technic Universal Joint 4L [Complete Assembly] Light Gray Part 9244 Element 9244 ×8
  • Technic Steering Arm Large with Towballs White Part 2737 ×2

Bricks Round and Cones 17 pieces

  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×4
  • Cone 1 x 1 [No Top Groove] Blue Part 4589 Element 4520957 or 458923 ×1
  • Cone 1 x 1 [No Top Groove] Red Part 4589 Element 458921 ×1
  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×9
  • Cone 2 x 2 x 2, Blocked Open Stud Yellow Part 3942b ×2

Hinges, Arms and Turntables 16 pieces

  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Blue Part 4276b Element 4238854 or 4114247 ×4
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Blue Part 4275b Element 4239024 or 427523 ×8
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top Blue Part 4531 Element 4240367 or 453123 ×4

Tiles 11 pieces

  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×1
  • Tile 1 x 1 with Groove Light Gray Part 3070b Element 307052 or 307002 1 spare in the box ×2
  • Tile 1 x 8 with Groove Red Part 4162 Element 416221 ×4
  • Tile 1 x 1 with Black '1' Print Yellow Part 3070bpr0026 Element 81072 1 spare in the box ×1
  • Tile 1 x 1 with Black '2' Print Yellow Part 3070bpr0027 Element 4140747 1 spare in the box ×1
  • Tile 1 x 1 with Black '3' Print Yellow Part 3070bpr0028 Element 80403 1 spare in the box ×1
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 1 spare in the box ×1

Wheels and Tyres 8 pieces

  • Tyre 24 x 43 Technic Black Part 3740 Element 374026 ×4
  • Wheel 24 x 43 Technic White Part 3739 Element 4248523 ×4

Technic Special 6 pieces

  • Technic Plate 1 x 6 with Toothed Ends Black Part 4262 Element 4225507 or 4189329 ×2
  • Technic Plate 1 x 5 with Toothed Ends, 2 Studs and Center Axle Hole Blue Part 2711 Element 4522085 or 4195721 ×4

Bricks Special 4 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×4

Tiles Round and Curved 4 pieces

  • Tile Round 2 x 2 with Bottom Cross White Part 4150 Element 415051 or 415001 ×4

Plates Round Curved and Dishes 3 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×3

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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