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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.

Alien Striker

Checking

7049 Alien Striker

34 pieces in 14 part and color combinations, plus 2 minifigures.

The piece count includes the 8 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.

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Piece checklist

Plates Special 12 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Black Part 2436 Element 4282746 or 243626 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Light Bluish Gray Part 4081b Element 6281998 or 4632575 ×4
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Light Bluish Gray Part 60897 Element 6296894 or 4613956 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Lime Part 3794a Element 4160084 ×2

Plates Round Curved and Dishes 6 pieces

  • Plate Round 1 x 1 with Solid Stud Dark Purple Part 6141 Element 4566522 1 spare in the box ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×2

Plates 5 pieces

  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×1
  • Plate 1 x 4 Lime Part 3710 Element 4187743 or 4122441 ×4

Bricks Curved 4 pieces

  • Brick Curved 3 x 1 No Studs Light Bluish Gray Part 50950 Element 4251163 ×4

Bars, Ladders and Fences 2 pieces

  • Lever Small Base with Black Lever Red Part 298c02 Element 74335 1 spare in the box ×2

Bricks Round and Cones 2 pieces

  • Cone 1 x 1 [Top Groove] Trans-Neon Green Part 59900 Element 6301321 or 6172230 ×2

Bricks Sloped 2 pieces

  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×2

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Gun / Pistol Two Barrel, 10 Ribs Dark Bluish Gray Part 95199 Element 4623236 ×1

Minifigures 2 figures

  • ADU Soldier, Snarl / Surprised, Dark Bluish Gray Hips Minifigure, checked as a whole figure ×1
  • Alien Trooper 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.

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