BlockTalk Find Your Set

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.

Build Your Own LEGO Harbor

Checking

6186 Build Your Own LEGO Harbor

248 pieces in 84 part and color combinations, plus 1 minifigure.

The piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. 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.

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.

Show

Piece checklist

Bricks 189 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×4
  • Brick 1 x 2 Black Part 3004 Element 300426 ×4
  • Brick 2 x 10 Black Part 3006 Element 4617860 or 300626 ×2
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×4
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×2
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×1
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×8
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×8
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×4
  • Brick 2 x 6 Blue Part 2456 Element 4181139 or 245623 ×1
  • Brick 4 x 10 Blue Part 6212 Element 621223 ×2
  • Brick 1 x 1 Green Part 3005 Element 300528 ×4
  • Brick 1 x 2 Green Part 3004 Element 4107736 or 300428 ×4
  • Brick 1 x 3 Green Part 3622 Element 4109679 or 362228 ×2
  • Brick 1 x 4 Green Part 3010 Element 4112838 or 301028 ×4
  • Brick 2 x 2 Green Part 3003 Element 300328 ×4
  • Brick 2 x 3 Green Part 3002 Element 4109674 or 300228 ×2
  • Brick 2 x 4 Green Part 3001 Element 4106356 or 300128 ×4
  • Brick 1 x 1 Medium Blue Part 3005 Element 4179830 or 4165452 ×4
  • Brick 1 x 2 Medium Blue Part 3004 Element 4629786 or 4179833 ×4
  • Brick 1 x 4 Medium Blue Part 3010 Element 4165458 or 4163696 ×4
  • Brick 2 x 2 Medium Blue Part 3003 Element 4205047 or 4201235 ×4
  • Brick 2 x 4 Medium Blue Part 3001 Element 4205058 or 4201236 ×4
  • Brick 1 x 1 Orange Part 3005 Element 4173805 or 4119645 ×4
  • Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×3
  • Brick 1 x 4 Orange Part 3010 Element 4118827 ×4
  • Brick 2 x 2 Orange Part 3003 Element 4153825 or 4119643 ×6
  • Brick 2 x 3 Orange Part 3002 Element 4153826 or 4125971 ×4
  • Brick 2 x 4 Orange Part 3001 Element 4153827 or 4119641 ×4
  • Brick 1 x 1 Red Part 3005 Element 300521 ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 1 x 3 Red Part 3622 Element 362221 ×2
  • Brick 1 x 4 Red Part 3010 Element 301021 ×4
  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×8
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×4
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×2
  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×3
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×4
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×4
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×2
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×1
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×4
  • Brick 2 x 8 White Part 3007 Element 6619309 or 6033776 ×1
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×4
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×4
  • Brick 2 x 10 Yellow Part 3006 Element 6119276 or 6073100 ×2
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×4
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×4
  • Brick 2 x 6 Yellow Part 2456 Element 4181143 or 245624 ×3

Bricks Sloped 13 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×3
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×3
  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 Also in White ×2
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 Also in Trans-Clear ×2
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Yellow Part 3684 Element 4248062 or 4189348 ×3

Plates 12 pieces

  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate 2 x 12 Black Part 2445 Element 244526 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 1 x 6 Medium Blue Part 3666 Element 4179829 ×4
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×1

Plates Special 9 pieces

  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Blue Part 3176 Element 317673 or 317623 ×2
  • Plate Special 2 x 2 with Wheel Holders Light Bluish Gray Part 4600 Element 4211504 ×2
  • Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×2
  • Plate Special 3 x 2 with Rounded End, Hole Yellow Part 3176 Element 4188313 or 4141738 ×2

Wheels and Tyres 8 pieces

  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4
  • Wheel 8 x 6 Light Bluish Gray Part 4624 Element 4211506 ×4

Plates Round Curved and Dishes 5 pieces

  • Plate Round 4 x 4 with Pin Hole Black Part 60474 Element 4515350 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

Tiles Special 4 pieces

  • Tile Special Round 2 x 2 - Thin Lifting Ring Black Part 2376 Element 237626 ×1
  • Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] Dark Bluish Gray Part 30350b Element 4227517 ×1
  • Tile Special 1 x 2 with Handle Yellow Part 2432 Element 243224 ×2

Bricks Round and Cones 2 pieces

  • Cone 1 x 1 [No Top Groove] Light Bluish Gray Part 4589 Element 4518652 or 4211499 ×2

Technic Bricks 2 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×2

Hinges, Arms and Turntables 1 piece

  • Turntable 4 x 4 Square Base, Locking Black Part 61485 Element 4517986 ×1

String, Bands and Reels 1 piece

  • String with End Studs 31L Overall Black Part 14226c31 Element 6510782 or 6096956 ×1

Supports, Girders and Cranes 1 piece

  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×1

Transportation - Land 1 piece

  • Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1

Minifigures 1 figure

  • Worker - Blue Torso, Orange Overall, Black Cap Minifigure, checked as a whole figure ×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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy