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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.

Airplane Mechanic

Checking

7901 Airplane Mechanic

27 pieces in 21 part and color combinations, plus 1 minifigure.

LEGO counts 26 pieces. This inventory comes from a separate parts catalog and lists 31, including the 4 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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

Minifig Shields, Weapons, & Tools 6 pieces

  • Tool Drill, Electric Black Part 55297 ×1
  • Tool Hammer Cross Pein [6-Rib Handle] Black Part 55295 ×1
  • Tool Oil Can [Smooth Handle] Black Part 55296 ×1
  • Tool Screwdriver with Narrow Head [6-Rib Handle] Black Part 55298 ×1
  • Tool Wrench / Spanner Open End [6-Rib Handle] Black Part 55299 ×1
  • Tool Wrench / Spanner, Box [6-Rib Handle] Black Part 55300 ×1

Hinges, Arms and Turntables 5 pieces

  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Black Part 30396 Element 4144567 or 4143351 ×1
  • Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [X Opening] Black Part 30389c Element 4163904 or 4162759 ×1
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30386 Element 4140704 ×1
  • Hinge Brick 1 x 4 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30387 Element 4218728 or 4144568 ×2

Plates 4 pieces

  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×2

Plates Special 2 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Yellow Part 3794a ×2

Tiles Special 2 pieces

  • Tile Special Round 2 x 2 - Thin Lifting Ring Black Part 2376 Element 237626 ×1
  • Tile Special 1 x 2 with Handle Yellow Part 2432 Element 243224 ×1

Transportation - Land 2 pieces

  • Wheel Holder, Plate, Round 2 x 2 Thin with Clips Light Bluish Gray Part 2655 Element 6152344 or 4211373 ×2

Transportation - Sea and Air 2 pieces

  • Jet Engine Fan with 10 Blades and Technic Pin Black Part 46667 Element 6313481 or 6088638 ×1
  • Engine, Large Light Bluish Gray Part 43121 Element 4211767 ×1

Wheels and Tyres 2 pieces

  • Wheel Skateboard / Trolley Black Part 2496 Element 6223673 or 4569104 ×2

Bars, Ladders and Fences 1 piece

  • Bar 1 x 6 [Closed Studs] Light Bluish Gray Part 6140 Element 6415608 or 4211524 ×1

Supports, Girders and Cranes 1 piece

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

Minifigures 1 figure

  • Man, Blue Overalls over Shirt, Blue Legs, Red Cap, Goatee Beard 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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