Free tool

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.

Checking

4400 Creations and Bricks {Red Tub}

705 pieces in 200 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 1 part in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. Many sets include a few extra small pieces. Check them before you order a replacement.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

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.

Brick 1 x 1 Red ×16 Trans-Red ×2 Trans-Red is see-through: hold the piece up to a light.

Piece checklist

Trans-Red 18 pieces

Brick 1 x 1 Trans-Red Part 3005 Element 4597292 or 4112801 Also in Red ×2
Brick 1 x 2 without Bottom Tube Trans-Red Part 3065 Element 6514263 or 6244905 ×6
Brick 2 x 2 without Inside Ridges Trans-Red Part 6223 Element 6514092 or 6239416 ×8
Brick Sloped 45° 2 x 2 Trans-Red Part 3039 Element 6056694 or 4165685 ×2

Trans-Dark Blue 16 pieces

Brick 1 x 2 without Bottom Tube Trans-Dark Blue Part 3065 Element 6514264 or 6244906 ×6
Brick 2 x 2 without Inside Ridges Trans-Dark Blue Part 6223 Element 6514091 or 6238043 ×8
Brick Sloped 45° 2 x 2 Trans-Dark Blue Part 3039 Element 6514101 or 6244887 ×2

Brown 14 pieces

Brick 1 x 1 Brown Part 3005 Element 4160990 or 300525 ×9
Brick 1 x 10 Brown Part 6111 Element 4141041 or 611125 ×1
Brick 2 x 3 Brown Part 3002 Element 4159269 or 300225 ×1
Brick 2 x 6 Brown Part 2456 Element 4181140 or 4143675 ×1
Brick Sloped 45° 2 x 4 Brown Part 3037 Element 4129991 or 303725 ×1
Plate 4 x 4 Brown Part 3031 Element 4243828 or 4180057 ×1

Dark Gray 13 pieces

Brick 1 x 1 with Angry Eye Left / Sad Eye Right Print Dark Gray Part 3005pr9995 Element 4158808 ×1
Brick 1 x 1 with Angry Eye Right / Sad Eye Left Print Dark Gray Part 3005pr9994 Element 4158809 ×1
Brick 1 x 1 x 5 with Blocked Open or Hollow Stud Dark Gray Part 2453a Element 245327 ×5
Brick Curved 2 x 3 Dark Gray Part 6215 Element 4173521 or 4143583 ×1
Brick Sloped 45° 2 x 3 Dark Gray Part 3038 Element 4163973 or 303827 ×5

Dark Turquoise 9 pieces

Brick 1 x 2 Dark Turquoise Part 3004 Element 6217659 or 4121500 ×2
Brick 2 x 2 Dark Turquoise Part 3003 Element 6314091 or 4120399 ×4
Brick 2 x 4 Dark Turquoise Part 3001 Element 6249422 or 6235115 ×1
Brick Sloped 33° 3 x 2 Dark Turquoise Part 3298 Element 6611552 or 6442379 ×1
Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Dark Turquoise Part 3747a Element 4121833 ×1

Tan 9 pieces

Brick 1 x 8 Tan Part 3008 Element 4159774 or 4124002 ×3
Brick 2 x 10 Tan Part 3006 Element 6294678 or 4615599 ×1
Brick 2 x 3 Tan Part 3002 Element 4159739 or 300205 ×3
Brick 2 x 6 Tan Part 2456 Element 4181134 or 4143256 ×1
Brick 2 x 8 Tan Part 3007 Element 6037398 or 4141533 ×1

Lime 7 pieces

Brick 1 x 3 Lime Part 3622 Element 4166093 or 4122448 ×1
Brick 1 x 8 Lime Part 3008 Element 4172974 ×1
Plate 2 x 8 Lime Part 3034 Element 6440107 or 6147274 ×1
Tile 1 x 4 with Groove Lime Part 2431 Element 4164021 ×2
Tile 1 x 6 with Groove Lime Part 6636 Element 6167465 or 4164031 ×2

Medium Blue 7 pieces

Brick Round 1 x 1 Open Stud Medium Blue Part 3062b Element 4585142 or 4129866 ×3
Brick Sloped 45° 2 x 2 Medium Blue Part 3039 Element 6092038 or 4143135 ×4

Light Yellow 6 pieces

Brick 1 x 1 x 5 with Blocked Open or Hollow Stud Light Yellow Part 2453a ×2
Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Light Yellow Part 2454a Element 4169352 ×1
Brick 2 x 4 Light Yellow Part 3001 Element 4173359 or 4119676 ×2
Brick 2 x 6 Light Yellow Part 2456 Element 4181145 or 4173050 ×1

Purple 6 pieces

Brick 1 x 4 Purple Part 3010 Element 4165665 or 4133559 ×5
Plate 2 x 6 Purple Part 3795 Element 4159742 or 4133551 ×1

Dark Red 5 pieces

Brick 2 x 3 Dark Red Part 3002 Element 4163453 ×3
Brick Sloped 45° 2 x 2 Dark Red Part 3039 Element 4609925 or 4162216 ×2

Sand Blue 5 pieces

Brick 1 x 4 Sand Blue Part 3010 Element 4620993 or 4187074 ×2
Brick 2 x 3 Sand Blue Part 3002 Element 4170245 ×2
Brick 2 x 4 Sand Blue Part 3001 Element 6406007 or 6224211 ×1

Dark Blue 3 pieces

Brick Sloped 33° 3 x 2 Dark Blue Part 3298 Element 6025376 or 4521777 ×2
Brick Sloped 45° 2 x 2 Dark Blue Part 3039 Element 4153653 ×1

Sand Red 3 pieces

Brick Sloped 33° 3 x 1 Sand Red Part 4286 Element 4143692 ×3

Medium Green 2 pieces

Brick 1 x 4 Medium Green Part 3010 Element 4184952 ×2

Pink 2 pieces

Plate 2 x 4 Pink Part 3020 Element 4184706 or 4110034 ×2

Trans-Clear 2 pieces

Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×2

Aqua 1 piece

Brick 1 x 1 Aqua Part 3005 Element 4163591 ×1

Light Blue 1 piece

Brick 2 x 2 x 3 Light Blue Part 30145 Element 4163697 ×1

Magenta 1 piece

Plate 2 x 2 Magenta Part 3022 Element 6109930 or 6091599 ×1

Medium Dark Pink 1 piece

Brick 2 x 2 Medium Dark Pink Part 3003 Element 300322 ×1

Medium Orange 1 piece

Brick 1 x 3 Medium Orange Part 3622 Element 4163717 or 4130358 ×1

Trans-Dark Pink 1 piece

Brick 1 x 3 Trans-Dark Pink Part 3622 Element 4188743 or 4183100 ×1

Trans-Neon Green 1 piece

Brick Sloped 45° 2 x 1 with Bottom Pin Trans-Neon Green Part 3040b Element 4544094 or 4140733 ×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.