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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.

Shock Cycle

Checking

8838 Shock Cycle

247 pieces in 61 part and color combinations.

LEGO counts 251 pieces. This inventory comes from a separate parts catalog and lists 247; 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

Technic Bushes 55 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×21
  • Technic Bush 1/2 Toothed Type I [+ Opening] Light Gray Part 4265a Element 426502 1 spare in the box ×34

Technic Special 34 pieces

  • Technic Link Black Part 3711a Element 371126 2 spares in the box ×30
  • Technic Plate 1 x 5 with Toothed Ends, 2 Studs and Center Axle Hole Black Part 2711 Element 4279391 or 4195722 ×2
  • Technic Plate 1 x 4 with Toothed Ends Yellow Part 4263 Element 4522090 or 426374 ×2

Technic Axles 28 pieces

  • Technic Axle 2 Black Part 3704 Element 370426 ×6
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×7
  • Technic Axle 6 Black Part 3706 Element 370626 ×10
  • Technic Axle 8 Black Part 3707 Element 370726 ×4

Plates 24 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 1 x 3 Black Part 3623 Element 362326 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×5
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×2
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×1
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×1
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×1
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×5

Technic Pins 18 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×8
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×6
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 ×4

Technic Bricks 17 pieces

  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×5
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Light Gray Part 3701 Element 370102 ×3

Technic Steering, Suspension and Engine 15 pieces

  • Technic Motorcycle Pivot Black Part 2904 Element 6181757 or 4543263 ×1
  • Technic Shock Absorber 9.5L with Soft Spring Black Part 2909c03 Element 6083112 or 6028683 ×4
  • Technic Engine Piston Round Dark Gray Part 2851 Element 4160859 or 285127 ×2
  • Technic Engine Connecting Rod Light Gray Part 2852 Element 285202 ×2
  • Technic Engine Crankshaft Light Gray Part 2853 Element 4119475 or 285302 ×4
  • Technic Engine Cylinder with Side Slots Light Gray Part 2850a ×2

Technic Beams 12 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×2
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×4
  • Technic Beam 1 x 4 Thin with Stud Connector Light Gray Part 2825 Element 4107133 or 282502 ×2
  • Technic Beam 1 x 4 Thin with Stud Connector Yellow Part 2825 Element 4107135 or 282524 ×4

Technic Connectors 10 pieces

  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×2
  • Technic Axle and Pin Connector Toggle Joint Toothed [with Slots] Light Gray Part 4273b Element 427302 ×8

Hinges, Arms and Turntables 8 pieces

  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Black Part 4276b Element 4264363 or 4256402 ×4
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Black Part 4275b Element 427526 ×4

Technic Gears 6 pieces

  • Technic Gear 14 Tooth Bevel Light Gray Part 4143 Element 414352 or 414302 ×2
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×1
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×2
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×1

Wheels and Tyres 6 pieces

  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×1
  • Tyre 81.6 x 15 Motorcycle Black Part 2902 Element 6226880 or 4562873 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×1
  • Wheel 61.6 x 13.6 Motorcycle White Part 2903 Element 290301 ×2

Bricks Sloped 4 pieces

  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×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 ×1

Tiles Special 4 pieces

  • Tile Special 1 x 2 Grille without Bottom Groove Light Gray Part 2412a ×4

Plates Special 3 pieces

  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×1
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×2

String, Bands and Reels 2 pieces

  • Rubber Band Small 13mm (Square Cross Section) Black Part 71509 Element 4141606 or 4107153 ×2

Tiles 1 piece

  • Tile 2 x 2 with Number 7 Print White Part 3068bpr0081 ×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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