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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.

Scorpion Detector

Checking

1737 Scorpion Detector

186 pieces in 93 part and color combinations, plus 2 minifigures.

LEGO counts 196 pieces. This inventory comes from a separate parts catalog and lists 198, including the 12 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

White 84 pieces

  • Bracket 8 x 2 x 1 1/3 White Part 4732 Element 473201 ×1
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×2
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×4
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×2
  • Brick Sloped 45° 2 x 2 with Space Display Print White Part 3039pr9997 Element 82527 ×1
  • Brick Sloped 45° 2 x 4 White Part 3037 Element 6552102 or 303701 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin White Part 3747a Element 374701 ×1
  • Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×2
  • Brick Special 1 x 2 with Pin White Part 2458 Element 4160228 or 245801 ×6
  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] White Part 3475b Element 347501 ×2
  • Equipment Camera with Side Sight [aka Space Gun] White Part 4360 Element 4190500 or 436001 ×1
  • Equipment Space Scanner White Part 30035 Element 3003501 ×1
  • Fence Lattice 1 x 4 x 2 White Part 3185 Element 6628214 or 4587272 ×2
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×2
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs White Part 4276b Element 4238278 or 4188547 ×4
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] White Part 4275b Element 4241120 or 4188523 ×4
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top White Part 4531 Element 4240364 or 4188347 ×2
  • Hinge Vehicle Roof Holder 1 x 4 White Part 4315 Element 4214079 or 4190507 ×1
  • Lever Small Base with Black Lever White Part 298c02 Element 73737 ×1
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×1
  • Panel 3 x 5 Solar / Deltoid with Clip [Hexagonal] White Part 30034 Element 3003401 ×1
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×3
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×4
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×5
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×6
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] White Part 2540 Element 4140583 or 254051 ×1
  • Plate Special 1 x 2 with Long Towball White Part 2508 Element 6554683 or 6333949 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] White Part 2444 Element 244401 ×2
  • Tile 2 x 2 with Explorien Logo Print White Part 3068bpr0037 Element 82529 ×2
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×2
  • Tile Round 2 x 2 with Bottom Cross White Part 4150 Element 415051 or 415001 ×1
  • Tile Special 1 x 1 with Clip and Straight Tips White Part 2555 Element 255501 ×2
  • Turntable 4 x 4 Square Base with Top, Complete Assembly White Part 3403c01 Element 4221666 or 4143679 ×1
  • Wedge Plate 3 x 6 Cut Corners White Part 2419 Element 6552090 or 241901 ×2
  • Wedge Plate 4 x 4 Wing Left White Part 3936 Element 4280155 or 4200492 ×1
  • Wedge Plate 4 x 4 Wing Right White Part 3935 Element 4280154 or 4200491 ×1
  • Wing Plate Bi-level 12 x 9 (Exploriens) White Part 30037 Element 4109961 or 3003701 ×1

Black 69 pieces

  • Bracket 3 x 2 - 2 x 2 [aka Space Seat] Black Part 4598 Element 6021678 or 459826 ×1
  • Brick 1 x 1 Black Part 3005 Element 300526 ×2
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×1
  • Brick 2 x 4 Black Part 3001 Element 300126 ×1
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×3
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Black Part 3747a ×1
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Special 1 x 2 with Pin Black Part 2458 Element 6116990 or 245826 ×1
  • Brick Special 2 x 4 x 2 with Studs on Sides Black Part 2434 Element 4494850 or 4201520 ×1
  • Hinge Bar with 3 Fingers and End Stud (Control Lever) Black Part 2433 Element 4497182 or 243326 ×2
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×2
  • Hinge Brick 1 x 4 [Lower] Black Part 3831 Element 383126 ×2
  • Hinge Brick 1 x 4 [Upper] Black Part 3830 Element 6344999 or 6011458 ×2
  • Hinge Plate 1 x 6 with 2 and 3 Fingers On Ends Black Part 4504 Element 4256462 or 4160816 ×4
  • Hinge Plate 2 x 5 with Large Hole [Complete Assembly] Black Part 3149bc01 Element 4161112 or 4106943 ×1
  • Magnet Cylindrical Black Part 73092 Element 73092 ×1
  • Magnet Holder 2 x 3 Black Part 2607 Element 260726 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 2 x 12 Black Part 2445 Element 244526 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×7
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Black Part 4081b Element 6281993 or 4632571 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×1
  • Plate Special 2 x 2 with Towball Socket, Short, 4 Slots Black Part 3730 Element 373026 ×1
  • Tail 4 x 2 x 2, Rocket Black Part 4746 Element 4164411 or 474626 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×1
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×2
  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×2
  • Wheel Hard Plastic Medium (35mm D. x 31mm) Black Part 2593 Element 4106931 or 259376 ×6
  • Wheel Hard Plastic Small (22mm D. x 24mm) Black Part 6118 Element 4106928 or 611876 ×2

Trans-Neon Green 20 pieces

  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×2
  • Brick Round 2 x 2 with Axle Hole Trans-Neon Green Part 3941 Element 6273157 or 611649 ×1
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×4
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×11
  • Dish 4 x 4 Inverted [Radar] Trans-Neon Green Part 3960 Element 3006549 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×1

Trans-Dark Blue 7 pieces

  • Brick Round 1 x 1 Open Stud Trans-Dark Blue Part 3062b Element 6514233 or 6238044 ×2
  • Cylinder Half 2 x 4 x 4 Trans-Dark Blue Part 6259 Element 6503213 or 6422707 ×2
  • Dish 4 x 4 Inverted [Radar] Trans-Dark Blue Part 3960 Element 4218661 or 3006543 ×1
  • Panel 1 x 2 x 3 - Solid Studs Trans-Dark Blue Part 2362a Element 3000943 ×1
  • Windscreen 10 x 4 x 2 1/3 Canopy Trans-Dark Blue Part 2507 Element 250793 or 250743 ×1

[No Color/Any Color] 3 pieces

  • Sticker Sheet 2 for Set 1737-1, 6815-1, 6938-1 [No Color/Any Color] Part 170888 Element 170888 ×1
  • Sticker Sheet for Sets 1737-1, 6815-1, 6854-1, 6856-1, 6899-1, 6938-1 [No Color/Any Color] Part 170900 ×1
  • Sticker Sheets for Sets 1737-1, 5129-1, 6854-1, 6856-1, 6899-1, 6938-1, 6958-1, 6982-1 [No Color/Any Color] Part 170910 Element 170910 ×1

Light Gray 2 pieces

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

Trans-Red 1 piece

  • Dish 4 x 4 Inverted [Radar] Trans-Red Part 3960 Element 3006541 ×1

Minifigures 2 figures

  • Exploriens Spaceman, with Radio on Belt Minifigure, checked as a whole figure ×1
  • Exploriens Spaceman, with Breathing Apparatus 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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