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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.

Big Royal Castle

Checking

10577 Big Royal Castle

135 pieces in 50 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.

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Piece checklist

Duplo, Quatro and Primo 131 pieces

  • Duplo Cannon, Shooting with Axle Hole and Red Firing Button Black Part 17178c01 Element 6071628 ×1
  • Duplo Plate 2 x 3 with 4 Studs and Hinge Black Part 13355 Element 6162007 or 6036787 ×1
  • Duplo Train Crossing Gate Base / Crane Base with Bottom Hole Black Part 13358 Element 6036717 ×1
  • Duplo Brick 1 x 2 x 2 with Bottom Tube Blue Part 76371 Element 6040229 ×6
  • Duplo Brick 2 x 10 x 2 Arch Blue Part 51704 Element 4516977 ×1
  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×10
  • Duplo Brick 2 x 3 x 2 with Curve Blue Part 2301 Element 230123 ×2
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×4
  • Duplo Brick 2 x 4 Curved Bottom Blue Part 98224 Element 4651504 ×7
  • Duplo Plate 6 x 12 Bright Green Part 4196 Element 6139231 or 6092951 ×1
  • Duplo Brick 2 x 2 Bright Light Orange Part 3437 Element 4583550 or 4226194 ×2
  • Duplo Brick 2 x 2 with Two Mice Print Bright Light Orange Part 3437pr0030 Element 6057745 ×1
  • Duplo Plate 4 x 8 Dark Bluish Gray Part 4672 Element 6288575 or 4247823 ×4
  • Duplo Animal Horse with one Stud and Raised Hoof with Blue Bridle & Crowned Eagle Print Dark Orange Part 1376pr0004 Element 6069759 ×1
  • Duplo Axe / Tomahawk with Round Handle and Solid Bottom Flat Silver Part 51268 Element 4612787 ×1
  • Duplo Door 1 x 4 x 4 with Nine Panes Flat Silver Part 31171 Element 4646783 or 4612786 ×1
  • Duplo Kettle with Closed Handles 2 x 2 x 1.5 Flat Silver Part 31042 Element 4622564 ×1
  • Duplo Sword / Broadsword Flat Silver Part 16600 Element 6064117 ×3
  • Duplo Brick 2 x 2 Slope 45° Light Bluish Gray Part 6474 Element 4222193 ×2
  • Duplo Door / Window, Castle Light Bluish Gray Part 16598 Element 6064116 ×2
  • Duplo Plate 6 x 12 Light Bluish Gray Part 4196 Element 6139232 or 6100459 ×1
  • Duplo Brick 2 x 2 x 2 Lime Part 31110 Element 4566313 ×2
  • Duplo Brick 2 x 3 with Curved Bottom Lime Part 98252 Element 4655944 ×4
  • Duplo Cannon Ball 1/2 with Axle Connector and 4 Holes in Top Medium Azure Part 54043b Element 6033233 ×2
  • Duplo Brick 1 x 2 x 2 with Bottom Tube Medium Blue Part 76371 Element 6101123 ×16
  • Duplo Brick 2 x 2 Medium Blue Part 3437 Element 4166960 or 4162701 ×9
  • Duplo Brick 2 x 4 x 2 Arch Medium Blue Part 11198 Element 6016839 ×4
  • Duplo Door / Window Frame Flat Front Surface, Completely Open Back Medium Blue Part 61649 Element 4653574 ×2
  • Duplo Door Frame 2 x 4 x 5 Medium Blue Part 92094 Element 4659558 ×1
  • Duplo Treasure Chest Opening 2 x 3 x 3 with Detailed Lid Ends Pearl Gold Part 11249 Element 6034352 ×1
  • Duplo Brick 1 x 2 x 2 with Bottom Tube Red Part 76371 Element 6040230 ×2
  • Duplo Brick 1 x 4 x 2 with 2 Top Cutouts (Arrow Slits) Red Part 16685 Element 6064118 ×14
  • Duplo Cape with Elastic Loop Red Part 17478 Element 6145267 or 6071727 ×1
  • Duplo Brick Round 2 x 2 with Radiating Bars (Camp Fire / Nest) Reddish Brown Part 31070 Element 6252069 or 4279100 ×1
  • Duplo Car Base 2 x 6 with Fake Bolts, Open Hitch End and Yellow Wheels Reddish Brown Part 11248c01 Element 6086686 ×1
  • Duplo Flagpole / Antenna 1 x 9 Reddish Brown Part 51708 Element 4585937 or 4249081 ×2
  • Duplo Plate 2 x 5 with 8 Studs and Hinge Reddish Brown Part 16686 Element 6250857 or 6071249 ×1
  • Duplo Plate 2 x 6 Reddish Brown Part 98233 Element 4657358 ×2
  • Duplo Plate Round 4 x 4 [aka Table] Reddish Brown Part 15516 Element 6333513 or 6054652 ×1
  • Duplo Wave (Fire, Water, Flame) 2 x 1 x 5 with Non-Marbled Tip Trans-Orange Part 51703 Element 6270047 or 4500457 ×1
  • Duplo Brick 1 x 3 x 2 Round Top, Cut Away Sides with Shield with Lion Red/White Print White Part 14222pr0014 Element 6073896 ×1
  • Duplo Brick 2 x 2 with Money Print White Part 3437pr0032 Element 6058965 ×1
  • Duplo Flag Wavy 2 x 5 without Slits with Lion with Crown Print White Part 15793pr0001 Element 6082309 ×2
  • Duplo Plate 2 x 4 White Part 40666 Element 4250172 or 4160151 ×2
  • Duplo Plate Round Corner 4 x 4 White Part 98218 Element 4654843 ×2
  • Duplo Brick 2 x 3 Yellow Part 87084 Element 4558884 ×2
  • Duplo Chair with 4 Studs and Rounded Back Yellow Part 12651 Element 6194390 or 6040234 ×1

Non-Buildable Figures (Duplo, Fabuland, etc) 4 pieces

  • Duplo Figure with Knight Helmet, with Dark Bluish Gray Legs, Blue and Yellow Chest with Crowned Eagle Medium Blue Part 16304pr0002 Element 6073140 ×2
  • Duplo Figure with Knight Helmet, with Dark Bluish Gray Legs, Red and White Chest with Lion on Shield Red Part 16304pr0001 Element 6073129 ×1
  • Duplo Figure with Parted Wavy Hair Light Yellow, Dark Bluish Gray Legs, Castle Lion Crest, Nougat Face and Hands Red Part 75115pr0021 Element 6073081 ×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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