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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.

Technology Activity Set

Checking

9607 Technology Activity Set

318 pieces in 92 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

Light Gray 150 pieces

  • Battery Box, 9V 4 x 14 x 4 with Dark Gray Base [Complete Assembly] Light Gray Part 2847c01 Element 4109813 or 74650 ×1
  • Motor Pulley, 9V Micromotor with axle hole Light Gray Part 2983 Element 298630 ×4
  • Motor, 9V 5 x 4 x 2 1/3, Dark Gray Bottom Light Gray Part 2838c01 Element 4494210 or 74569 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×24
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×4
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×6
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×4
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×4
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×2
  • Plate 2 x 2 Corner Light Gray Part 2420 Element 242052 or 242002 ×4
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×3
  • Plate 6 x 10 Light Gray Part 3033 Element 303302 ×3
  • Technic Axle Connector Ridged [with + Hole + Orientation] Light Gray Part 6538a ×4
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×2
  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×2
  • Technic Axle and Pin Connector Perpendicular Light Gray Part 6536 Element 4173667 or 653602 ×2
  • Technic Beam 1 x 4 Thin with Stud Connector Light Gray Part 2825 Element 4107133 or 282502 ×2
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 1 spare in the box ×10
  • Technic Bush 1/2 Toothed Type II [X Opening] Light Gray Part 4265b Element 4100501 or 657702 1 spare in the box ×10
  • Technic Cam Light Gray Part 6575 Element 657502 ×2
  • Technic Gear 14 Tooth Bevel Light Gray Part 4143 Element 414352 or 414302 ×4
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×2
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Gray Part 3650c Element 365002 ×2
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×3
  • Technic Gear 40 Tooth Light Gray Part 3649 Element 364902 ×2
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 1 spare in the box ×4
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×2
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×8
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×6
  • Technic Plate 2 x 4 [3 Holes] Light Gray Part 3709 Element 370902 ×4
  • Technic Plate 2 x 8 [7 Holes] Light Gray Part 3738 Element 373802 ×2
  • Technic Rubber Belt Medium [24mm ID] [Round Cross Section] Light Gray Part 85544 Element 70903 1 spare in the box ×2
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×5
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×2
  • Tile 1 x 8 with Groove Light Gray Part 4162 Element 416202 ×2
  • Wheel with Split Axle hole Light Gray Part 3482 Element 348202 ×6

Black 85 pieces

  • Brick Special 2 x 6 x 2 Weight with Sealed Bottom and Dimples on Ends Black Part 73090b Element 6094053 or 73843 ×1
  • Hook, Technic - Large Black Part 70496 Element 70644 ×1
  • Rubber Band Large [Square Cross Section] Black Part 70158 1 spare in the box ×8
  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 2 spares in the box ×2
  • Rubber Band Small 13mm (Square Cross Section) Black Part 71509 Element 4141606 or 4107153 2 spares in the box ×4
  • String Cord Medium Thickness [Undetermined Length] Black Part 14728 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 2 Black Part 3704 Element 370426 ×2
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×7
  • Technic Axle 8 Black Part 3707 Element 370726 ×3
  • Technic Link Black Part 3711a Element 371126 2 spares in the box ×30
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×14
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×2
  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1
  • Tyre 24 x 13 Model Team Black Part 2696 Element 269676 or 269626 ×2
  • Wire with Brick 2 x 2 x 2/3 Pair, 162L Black Part 5306bc162 Element 75656 ×1

Red 59 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×6
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×3
  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×2
  • Brick Sloped 45° 2 x 2 Double Red Part 3043 Element 304321 ×3
  • Storage Bin, Dacta, Small Red Part upn0032 ×1
  • Technic Brick 1 x 10 [9 Pin Holes] Red Part 2730 Element 273021 ×6
  • Technic Brick 1 x 12 [11 Pin Holes] Red Part 3895 Element 389521 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Red Part 3703 Element 370321 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×12
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×4
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×4

[No Color/Any Color] 17 pieces

  • Activity Booklet - Motor and Battery Box Manual - Set 9607 [No Color/Any Color] Part 9607bm ×1
  • Activity Booklet - Parts Tray Organizer Card - Set 9607 [No Color/Any Color] Part 9607bc ×1
  • Activity Booklet 1 - {Right Angle Drive} - Set 9607 [No Color/Any Color] Part 9607b1 ×1
  • Activity Booklet 10 - {Conveyor} - Set 9607 [No Color/Any Color] Part 9607b10 ×1
  • Activity Booklet 11 - {Forming Press} - Set 9607 [No Color/Any Color] Part 9607b11 ×1
  • Activity Booklet 12 - {Mixer} - Set 9607 [No Color/Any Color] Part 9607b12 ×1
  • Activity Booklet 13 - [Crane] - Set 9607 [No Color/Any Color] Part 9607b13 ×1
  • Activity Booklet 14 - {Oscillating Fan} - Set 9607 [No Color/Any Color] Part 9607b14 ×1
  • Activity Booklet 15 - {Pallet Lifter} - Set 9607 [No Color/Any Color] Part 9607b15 ×1
  • Activity Booklet 2 - {Drill Press with Multiple Speed Pulleys} - Set 9607 [No Color/Any Color] Part 9607b2 ×1
  • Activity Booklet 3 - {Planer with Clutch Mechanism} - Set 9607 [No Color/Any Color] Part 9607b3 ×1
  • Activity Booklet 4 - {Machine using Belt and two Gears} - Set 9607 [No Color/Any Color] Part 9607b4 ×1
  • Activity Booklet 5 - {Lathe with Speed Changing Gears} - Set 9607 [No Color/Any Color] Part 9607b5 ×1
  • Activity Booklet 6 - {Bottling Machine} - Set 9607 [No Color/Any Color] Part 9607b6 ×1
  • Activity Booklet 7 - {Reciprocating Gear Box} - Set 9607 [No Color/Any Color] Part 9607b7 ×1
  • Activity Booklet 8 - {Right Angle Belt Drive Winder} - Set 9607 [No Color/Any Color] Part 9607b8 ×1
  • Activity Booklet 9 - {Roller} - Set 9607 [No Color/Any Color] Part 9607b9 ×1

Trans-Clear 2 pieces

  • Storage / Sorting Tray, Dacta, 13 Compartment for Dacta Small Bin Trans-Clear Part 167915 ×1
  • Storage Bin Lid, Dacta, 19 x 24 Trans-Clear Part 71082 ×1

White 2 pieces

  • Wheel 30 x 13 Model Team White Part 2695 Element 4507077 or 4240315 ×2

Blue 1 piece

  • Technic Rubber Belt Medium [26mm ID] [Round Cross Section] Blue Part 85545 Element 6049730 or 4544147 1 spare in the box ×1

Dark Gray 1 piece

  • Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides Dark Gray Part 6573 Element 657327 ×1

Yellow 1 piece

  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×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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