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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.

Mono Jet

Checking

7310 Mono Jet

29 pieces in 23 part and color combinations, plus 1 minifigure.

The piece count includes the 5 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.

Show

Piece checklist

White 10 pieces

  • Brick Sloped 18° 4 x 2 White Part 30363 Element 4143000 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×1
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×1
  • Cylinder 3 x 6 x 2 2/3 Horizontal Hollow Studs White Part 30360 Element 4215142 or 4142999 ×1
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Ridges White Part 32064c ×3
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1

Black 7 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×1
  • Brick 2 x 3 Black Part 3002 Element 300226 ×1
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×2
  • Cone 2 x 2 x 2, Open Stud Black Part 3942c Element 6092664 or 6022160 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×1

Dark Gray 6 pieces

  • Tile 1 x 2 with Copper and White Circuitry, Red Rectangle and 4 Squares Print Dark Gray Part 3069bpr0053 Element 4109935 ×2
  • Tile 1 x 2 with Joystick and Vehicle Control Panel Print Dark Gray Part 3069bpr0090 Element 4120171 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Gray Part 2412b Element 4124056 or 241227 ×2
  • Wedge Plate 4 x 9 without Stud Notches Dark Gray Part 2413 Element 4120499 ×1

Light Gray 2 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Light Gray Part 2540 Element 4140584 or 254052 ×1
  • Wheel Hard Plastic Spoked Light Gray Part 30324 Element 4142996 ×1

Medium Blue 2 pieces

  • Brick Sloped 33° 3 x 2 Medium Blue Part 3298 Element 4142994 ×1
  • Plate 2 x 4 Medium Blue Part 3020 Element 6302678 or 4650970 ×1

Blue 1 piece

  • Plate 1 x 2 Blue Part 3023 Element 302323 ×1

Trans-Red 1 piece

  • Dish 2 x 2 Inverted [Radar] Trans-Red Part 4740 Element 6580377 or 6245303 ×1

Minifigures 1 figure

  • Spaceman, Assistant (23318 Visor) 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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