The Workshop Sheet 10 of 22

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.

Red Planet Protector

Checking

7313 Red Planet Protector

188 pieces in 72 part and color combinations, plus 1 minifigure.

LEGO counts 194 pieces. This inventory comes from a separate parts catalog and lists 193, including the 5 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

Plates 42 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×8
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×2
  • Plate 2 x 2 Corner Blue Part 2420 Element 242073 or 242023 ×2
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×4
  • Plate 1 x 2 Dark Gray Part 3023 Element 4111983 or 302327 ×2
  • Plate 1 x 4 Dark Gray Part 3710 Element 371027 ×3
  • Plate 1 x 8 Dark Gray Part 3460 Element 346027 ×1
  • Plate 2 x 2 Dark Gray Part 3022 Element 4114003 or 302227 ×3
  • Plate 2 x 2 Corner Dark Gray Part 2420 Element 4124091 or 242027 ×4
  • Plate 2 x 4 Dark Gray Part 3020 Element 4112232 or 302027 ×2
  • Plate 2 x 6 Dark Gray Part 3795 Element 379527 ×1
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×2
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×4
  • Plate 4 x 4 Light Gray Part 3031 Element 4243813 or 303102 ×2

Hinges, Arms and Turntables 30 pieces

  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Blue Part 73983 Element 6102759 or 4119371 ×4
  • Hinge Brick 1 x 2 Base Dark Gray Part 3937 Element 4112234 or 393727 ×3
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Dark Gray Part 30364 Element 4144497 or 4124099 ×6
  • Hinge Brick 1 x 2 Locking with Single Finger On Top Dark Gray Part 76385 Element 4125384 ×1
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Dark Gray Part 30383 Element 4144572 or 4124434 ×4
  • Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth Light Gray Part 30365 Element 4144500 or 4124100 ×8
  • Hinge Brick 1 x 2 Top Plate Thin Light Gray Part 3938 Element 393802 ×3
  • Hinge Plate 1 x 8 Locking with Angled Side Extensions, Rounded Plate Underside, 9 Teeth Light Gray Part 30407 Element 4215615 or 4143114 ×1

Bricks Sloped 22 pieces

  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×5
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Dark Gray Part 3747a Element 4112039 ×2
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×4
  • Brick Sloped 45° 2 x 4 Light Gray Part 3037 Element 303702 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Light Gray Part 3747a Element 4109695 ×2
  • Brick Sloped Inverted 45° 6 x 4 Double with Recessed Center Light Gray Part 30183 Element 4116843 ×1
  • Brick Sloped 33° 3 x 2 with Blue/Gray Machinery Print Sand Blue Part 3298pr0050 Element 4143025 ×2
  • Brick Sloped 45° 2 x 1 Double / Inverted with Hollow Bottom Sand Blue Part 3049c Element 4143111 ×5

Bricks Special 18 pieces

  • Brick Special 1 x 2 with 2 Pins, Round Pin Holes Blue Part 30526 Element 4522302 or 4158266 ×3
  • Brick Special 2 x 4, with 2 x 2 Brick with Top Pin and 1 x 2 Side Plates Blue Part 30592 Element 4143052 ×1
  • Brick Special 1 x 2 with Grille Dark Gray Part 2877 Element 4124092 or 287727 ×4
  • Brick Special 2 x 2 with Pin and Axle Hole Dark Gray Part 6232 Element 4108048 ×2
  • Engine 2 x 4 x 4 Dark Gray Part 30535 Element 4143058 ×2
  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×2
  • Brick Special 1 x 2 with Pin Light Gray Part 2458 Element 245802 ×2
  • Brick Special 2 x 2 with Pin and Axle Hole Light Gray Part 6232 Element 623202 ×2

Bricks 10 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×1
  • Brick 2 x 2 Corner Blue Part 2357 Element 4558606 or 4533323 ×2
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×1
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×4
  • Brick 2 x 4 Light Gray Part 3001 Element 4116259 or 300102 ×2

Bricks Round and Cones 9 pieces

  • Brick Round 1 x 1 Open Stud Blue Part 3062b Element 306223 1 spare in the box ×6
  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×1
  • Cone 1 x 1 [No Top Groove] Trans-Neon Orange Part 4589 Element 4529918 or 618847 ×2

Plates Round Curved and Dishes 9 pieces

  • Dish 2 x 2 Inverted [Radar] Light Gray Part 4740 Element 474002 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Gray Part 4032a Element 403202 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 1 spare in the box ×6

Plates Special 9 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Blue Part 2540 Element 4140586 or 254023 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Blue Part 3839b Element 4286615 or 383923 ×4
  • Technic Plate 2 x 8 [7 Holes] Blue Part 3738 Element 373823 ×1
  • Plate Special 6 x 6 x 2/3 Cross with Dome Dark Gray Part 30303 Element 4120146 ×2
  • Bracket 2 x 2 - 2 x 2 Light Gray Part 3956 Element 395602 ×1

Technic Bricks 8 pieces

  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×4

Tiles Special 8 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Sand Blue Part 2412b Element 4143269 ×6
  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Neon Orange Part 2412b Element 6250159 or 6124829 ×2

Plates Wedged 4 pieces

  • Wedge Plate 3 x 4 without Stud Notches Blue Part 4859 ×2
  • Wedge Plate 8 x 4 Wing Left Sand Blue Part 3933 Element 4234003 or 4143270 ×1
  • Wedge Plate 8 x 4 Wing Right with Stud Notch Sand Blue Part 3934 Element 4234005 or 4143271 ×1

Tiles 4 pieces

  • Tile 2 x 2 with Groove Dark Gray Part 3068b Element 4109986 or 306827 ×4

Bars, Ladders and Fences 3 pieces

  • Bar 1 x 8 with Brick 1 x 2 Curved Top End (Original, No Axle Holder) Dark Gray Part 30359a Element 4124064 ×3

Tiles Round and Curved 3 pieces

  • Tile Round 2 x 2 with Tracking Screen Print Dark Gray Part 4150pr0042 Element 4143048 ×1
  • Tile Round 2 x 2 with Podracer Vent Print Light Gray Part 4150pr0023 Element 4124411 ×2

Technic Pins 2 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×2

Transportation - Sea and Air 2 pieces

  • Propeller 3 Blade 3 Diameter with Axle Cross Blue Part 6041 Element 4143109 or 604123 ×2

Tubes and Hoses 2 pieces

  • Flexible Ribbed Hose 8mm Ends 12L with Tabbed Black Ends Light Gray Part 758c03 Element 4143057 ×2

Bricks Wedged 1 piece

  • Brick Wedged, Sloped 6 x 4 Cutout, No Stud Notches Sand Blue Part 6153a Element 4143112 ×1

Supports, Girders and Cranes 1 piece

  • Support 4 x 4 x 5 2/3 Stand Dark Gray Part 33089 Element 4143115 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 8 x 4 x 2 Curved Taper with Locking Dual 2 Fingers Trans-Brown Part 30536 Element 4215614 or 4143049 ×1

Minifigures 1 figure

  • Martian, Centauri 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.