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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.

Life on Mars Accessories

Checking

3750 Life on Mars Accessories

48 pieces in 32 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

Black 14 pieces

  • Arm Grabber Angled Black Part 30542 Element 4143242 ×2
  • Bar 1 x 3 [Clip / Anti-Stud] Black Part 4735 Element 4141580 or 473576 ×2
  • Equipment Camera with Side Sight [aka Space Gun] Black Part 4360 Element 436026 ×1
  • Equipment Martian Hypersled [Life On Mars] Black Part 30593 Element 4159340 or 4143755 ×1
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×2
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Black Part 30364 Element 6266306 or 4265484 ×1
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Black Part 30383 Element 6338799 or 4144575 ×2
  • Tile 1 x 1 with Green Oval Print Black Part 3070bpr0033 Element 4142976 ×2
  • Tile 1 x 2 with Mars Orbit Display Print Black Part 3069bpr0044 Element 4114640 ×1

Dark Gray 7 pieces

  • Brick Sloped 45° 2 x 2 with Blue/Copper Radar Display Print Dark Gray Part 3039pr9952 Element 4114637 ×1
  • Brick Sloped 45° 2 x 2 with LoM Elliptical Display Print Dark Gray Part 3039pr9950 Element 4143032 ×1
  • Hinge Brick 1 x 2 Locking with 1 Finger Horizontal End Dark Gray Part 30541 Element 4160029 ×1
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and 2 Fingers On Ends, without Hole, 9 Teeth Dark Gray Part 30554a ×2
  • Tile 1 x 2 with Elliptical Display Print Dark Gray Part 3069bpr0046 Element 4142971 ×1
  • Tile 1 x 2 with LoM Gray Mechanical Print Dark Gray Part 3069bpr0102 Element 4143023 ×1

Yellow 7 pieces

  • Rubber Band 15mm [Square Cross Section] Yellow Part 23229 Element 4125669 or 4124335 ×7

Light Gray 6 pieces

  • Equipment Metal Detector Light Gray Part 4479 Element 4118715 or 447902 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Horizontal End, 9 Teeth Light Gray Part 30540 Element 4143750 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth Light Gray Part 30365 Element 4144500 or 4124100 ×1
  • Tile Round 2 x 2 with Flame and Sand Green Border Print Light Gray Part 4150pr0031 Element 4142974 ×1
  • Tile Round 2 x 2 with Flame and Sand Red Border Print Light Gray Part 4150pr0041 Element 4142973 ×1
  • Tile Round 2 x 2 with Orange Grabber Print Light Gray Part 4150pr0040 Element 4142972 ×1

White 5 pieces

  • Dish 2 x 2 Inverted [Radar] White Part 4740 Element 6601845 or 474001 ×2
  • Helmet, Standard White Part 2446 Element 6138832 or 4583503 ×2
  • Tile Round 2 x 2 with Light Blue Vitruvian Minifig Print White Part 4150pr0043 Element 4143038 ×1

Chrome Blue 2 pieces

  • Headwear Accessory Visor Large Chrome Blue Part 769 Element 4142958 ×2

Red 2 pieces

  • Brick Sloped 33° 3 x 2 with Red/Gray Machinery Parts Print Red Part 3298pr0051 Element 4143028 ×1
  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Red Part 30396 Element 4144565 or 4140703 ×1

Sand Green 2 pieces

  • Dish 2 x 2 Inverted [Radar] Sand Green Part 4740 Element 4143700 ×2

Trans-Neon Green 2 pieces

  • Equipment Space Scanner Trans-Neon Green Part 30035 Element 4143131 ×1
  • Propeller 3 Blade 3 Diameter with Axle Cross Trans-Neon Green Part 6041 Element 4143702 or 4109665 ×1

Sand Blue 1 piece

  • Brick Sloped 33° 3 x 2 with Blue/Gray Machinery Print Sand Blue Part 3298pr0050 Element 4143025 ×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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