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.

Rock Monster Truck

Checking

30594 Rock Monster Truck

54 pieces in 25 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

Plates Special 11 pieces

  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Dark Bluish Gray Part 60470b Element 6350292 ×1
  • Bracket 1 x 2 - 1 x 2 Inverted Light Bluish Gray Part 99780 Element 6004990 ×4
  • Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top] Light Bluish Gray Part 28802 Element 6168615 ×2
  • Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top] Yellow Part 28802 Element 6168616 ×2

Wheels and Tyres 8 pieces

  • Tyre 30.4 x 14 Offset Tread [Centre Band] Black Part 92402 Element 4619323 ×4
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Black Part 55981 Element 6359824 or 6109682 ×4

Tiles Round and Curved 6 pieces

  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×6

Plates 5 pieces

  • Plate 2 x 6 Dark Turquoise Part 3795 Element 6259794 or 4121503 ×1
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×1
  • Plate 2 x 8 Reddish Brown Part 3034 Element 4211211 ×1
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×2

Plates Round Curved and Dishes 5 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Turquoise Part 4032a Element 6210400 ×1
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×2

Tiles Special 5 pieces

  • Tile Special 2 x 3 Pentagonal Dark Turquoise Part 22385 Element 6328050 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Reddish Brown Part 2412b Element 4224243 ×4

Technic Pins 4 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×4

Bricks Special 3 pieces

  • Bracket 3 x 2 x 1 1/3 with Bottom Stud Holder Light Bluish Gray Part 73562 Element 6347992 ×2
  • Brick Special 1 x 2 Palisade [aka Log] Reddish Brown Part 30136 Element 4211180 ×1

Bricks Sloped 2 pieces

  • Brick Sloped 45° 2 x 4 Black Part 3037 Element 303726 ×1
  • Brick Sloped 45° 2 x 4 Yellow Part 3037 Element 4219911 or 303724 ×1

Plates Wedged 2 pieces

  • Wedge Plate 2 x 4 Dark Bluish Gray Part 51739 Element 4527082 ×2

Tiles 2 pieces

  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×2

Transportation - Land 1 piece

  • Grille Bar 1 x 4 x 1 2/3 Bull Bar, Rounded Black Part 35654 Element 6207258 ×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.