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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.

Connections Kit

Checking

2000431 Connections Kit

2,448 pieces in 90 part and color combinations.

LEGO counts 2,455 pieces. This inventory comes from a separate parts catalog and lists 2,448; 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 593 pieces

  • Axle Hose, Soft 11L Black Part 32199 Element 4234438 or 4121646 ×20
  • Axle Hose, Soft 12L Black Part 32200 Element 4501290 or 4121647 ×50
  • Bar 1 x 8 x 3 - 1 x 8 x 4 Curved Black Part 95229 Element 6360199 or 4620385 ×6
  • Brick 2 x 8 Black Part 3007 Element 6037390 or 300726 ×60
  • Brick Sloped 45° 2 x 2 Double Concave Black Part 3046a Element 6477383 or 4218890 ×40
  • Duplo Hose Flexible 11L with Grabber Hand Ends and Middle Stud Black Part 42030 Element 4622359 or 4276807 ×8
  • Duplo Hose with Rubber End and Light Bluish Gray Nozzle Black Part 58498c01 Element 4548111 ×4
  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×6
  • Hips and Black Legs Black Part 970c03 Element 4569093 or 73407 ×10
  • Hose, Ribbed 7mm D. 9L / 7.2cm Black Part 78c09 Element 6443871 or 6420612 ×50
  • Plate 1 x 12 Black Part 60479 Element 4514845 ×10
  • Plate 2 x 10 Black Part 3832 Element 383226 ×10
  • Plate 4 x 10 Black Part 3030 Element 303076 or 303026 ×40
  • String with End Studs 41L Overall Black Part 14226c41 Element 6096957 or 6074034 ×30
  • Technic Axle 10 Black Part 3737 Element 373726 ×60
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 6 Black Part 3706 Element 370626 ×10
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×25
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×30
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×100
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×6
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×12

Light Bluish Gray 491 pieces

  • Brick 1 x 1 x 5 with Blocked Open or Hollow Stud Light Bluish Gray Part 2453a ×10
  • Brick Sloped 55° 1 x 6 x 5 Light Bluish Gray Part 30249 Element 6038002 or 4211728 ×6
  • Brick Special 1 x 2 with 2 Pins, Round Pin Holes Light Bluish Gray Part 30526 Element 4211660 ×20
  • Brick Special 1 x 2 with Pin Light Bluish Gray Part 2458 Element 4211364 ×20
  • Brick Special 2 x 4, with 2 x 2 Brick with Top Pin and 1 x 2 Side Plates Light Bluish Gray Part 30592 Element 6301425 or 6278504 ×50
  • Hinge Brick 1 x 2 Base Light Bluish Gray Part 3937 Element 4211469 ×14
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Light Bluish Gray Part 44302a Element 4211804 ×5
  • Hinge Tile 1 x 3 Locking with 1 Finger on Top Light Bluish Gray Part 44300 Element 4211802 ×5
  • Projectile, Technic Competition Arrow, Liftarm Shaft with Hollow Black Rubber End Light Bluish Gray Part 57028c01 Element 4299625 ×4
  • Technic Axle and Pin Connector Angled #2 - 180° Light Bluish Gray Part 32034 Element 6346487 or 4211567 ×100
  • Technic Axle and Pin Connector Angled #6 - 90° Light Bluish Gray Part 32014 Element 6268924 or 4509886 ×25
  • Technic Beam 1 x 15 Thick Light Bluish Gray Part 32278 Element 4542577 or 4211770 ×24
  • Technic Gear 20 Tooth Bevel with Pin Hole Light Bluish Gray Part 87407 Element 4558690 ×10
  • Technic Gear 40 Tooth Light Bluish Gray Part 3649 Element 6195314 or 4285634 ×30
  • Technic Link 1 x 16 Light Bluish Gray Part 2637 Element 4211556 ×50
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×100
  • Technic Shock Absorber 6.5L with Soft Spring, Standard Coil [Complete Assembly] Light Bluish Gray Part 76138 Element 6027565 or 4265688 ×6
  • Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×12

Red 305 pieces

  • Axle Hose, Soft 19L Red Part 32235 Element 4614802 or 4227553 ×24
  • Brick Special 2 x 2 with Pin and Axle Hole Red Part 6232 Element 6347696 or 623221 ×100
  • Hinge Brick 2 x 2 Top Plate Thin Red Part 6134 Element 613421 ×8
  • Hose, Ribbed 7mm D. 14L / 11.2cm Red Part 78c14 Element 4268654 or 4125203 ×75
  • Plate 1 x 12 Red Part 60479 Element 4514843 ×24
  • Plate 2 x 12 Red Part 2445 Element 4255035 or 4161545 ×8
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×10
  • Technic Brick 1 x 12 [11 Pin Holes] Red Part 3895 Element 389521 ×16
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×8
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×12
  • Technic Gear 8 Tooth No Friction Red Part 11955 Element 6036545 ×10
  • Torso, White Arms, Yellow Hands [Plain] Red Part 973c27h01 ×10

Orange 230 pieces

  • Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×40
  • Brick Sloped 45° 2 x 2 Orange Part 3039 Element 4118828 ×180
  • Plate 2 x 3 Orange Part 3021 Element 4125278 ×10

Tan 160 pieces

  • Brick Special 2 x 2 with Pin and Axle Hole Tan Part 6232 Element 6347700 or 4185273 ×50
  • Plate 2 x 4 Tan Part 3020 Element 4114309 or 302005 ×10
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×100

Lime 150 pieces

  • Brick 2 x 4 Lime Part 3001 Element 4165967 or 4122453 ×140
  • Technic Wedge Belt Wheel [aka Pulley] Lime Part 4185 Element 6335116 or 4494219 ×10

White 118 pieces

  • Axle Hose, Soft 12L White Part 32200 Element 4296264 or 4227522 ×70
  • Hips and White Legs White Part 970c27 Element 6551364 or 4570434 ×10
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×10
  • Plate 2 x 16 White Part 4282 Element 6609534 or 4119227 ×8
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] White Part 32064b ×10
  • Torso, White Arms, Yellow Hands [Plain] White Part 973c27h01 Element 6038496 or 4275461 ×10

Blue 97 pieces

  • Brick Special 2 x 2 with 2 Pins and Axle Hole Blue Part 30000 Element 3000023 ×25
  • Hips and Blue Legs Blue Part 970c28 Element 6006026 or 4583501 ×10
  • Plate 1 x 10 Blue Part 4477 Element 447723 ×26
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×10
  • Technic Brick 1 x 16 [15 Pin Holes] Blue Part 3703 Element 370323 ×16
  • Torso, White Arms, Yellow Hands [Plain] Blue Part 973c27h01 Element 4275813 ×10

Dark Pink 80 pieces

  • Brick 2 x 2 Dark Pink Part 3003 Element 4517992 or 4497170 ×80

Dark Bluish Gray 64 pieces

  • Bar 7 x 3 [4 Clips] Dark Bluish Gray Part 30095 Element 4667977 or 4234920 ×20
  • Chain 16L [21 Links] Dark Bluish Gray Part 60169 Element 6258887 or 4516456 ×30
  • Launcher, Technic Competition Cannon Flat Bottom [Complete Assembly] Dark Bluish Gray Part 57796 Element 6064131 or 4518308 ×4
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×10

Yellow 55 pieces

  • Bar 1 x 8 x 2 Yellow Part 2486 Element 4189225 or 4106812 ×15
  • Minifig Head Alfie the Apprentice / Knight, Brown Eyebrows, Open Lopsided Grin, White Pupils Print Yellow Part 3626cpr0645 ×10
  • Minifig Head, Black Eyebrows, Thin Grin, Eyes with White Pupils Print [Hollow Stud] Yellow Part 3626cpr0891 Element 4651441 ×10
  • Minifig Head, Neat Brown Beard with White Pupils and Glasses Print Yellow Part 3626bpr0386 Element 6030239 or 4261301 ×10
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×10

Flat Silver 49 pieces

  • Flexible Ribbed Hose 8mm Ends 19L Flat Silver Part 57539 Element 6044636 or 4615232 ×24
  • Hose, Ribbed 7mm D. 6L / 4.8cm Flat Silver Part 78c06 Element 4620076 ×25

Reddish Brown 28 pieces

  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Reddish Brown Part 2454a ×10
  • Duplo Fence 1 x 10 x 2 [Clip and Bar Ends] Reddish Brown Part 98460 Element 6005479 or 4541334 ×8
  • Plate 1 x 10 Reddish Brown Part 4477 Element 4223683 ×10

Trans-Light Blue 15 pieces

  • Brick 1 x 2 x 5 without Side Supports Trans-Light Blue Part 46212 Element 6514084 or 6251284 ×15

Green 10 pieces

  • Plate 2 x 10 Green Part 3832 Element 383228 ×10

Very Light Bluish Gray 3 pieces

  • Storage / Sorting Tray, Dacta, 13 Cups [For New Style Storage Bins] Very Light Bluish Gray Part 54572 ×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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