Free tool

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.

Front-End Loader Black Box

Checking

8453-2 Front-End Loader Black Box

214 pieces in 60 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

Technic Beams 64 pieces

  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×8
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 ×4
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×3
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×8
  • Technic Beam 1 x 5 Thin Black Part 32017 Element 6114935 or 4503423 ×3
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Black Part 32250 Element 6327162 or 4128557 ×2
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×4
  • Technic Beam 1 x 6 Thin Light Gray Part 32063 Element 4114200 ×2
  • Technic Beam 1 x 11.5 Double Bent Thick Yellow Part 32009 Element 6271150 or 6257104 ×2
  • Technic Beam 1 x 2 Thick Yellow Part 43857 Element 4187122 ×2
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×4
  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×2
  • Technic Beam 1 x 5 Thick Yellow Part 32316 Element 4142133 or 4128590 ×2
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Yellow Part 32348 Element 6278131 or 4500485 ×2
  • Technic Beam 1 x 7 Thick Yellow Part 32524 Element 4495934 or 4187082 ×2
  • Technic Beam 1 x 9 Thick Yellow Part 40490 Element 6115616 or 4187136 ×2
  • Technic Beam 2 x 4 L-Shape Thick Yellow Part 32140 Element 6271828 or 4141628 ×2
  • Technic Beam 3 x 3 L-Shape Thin Yellow Part 32056 Element 6271812 or 4112289 ×2
  • Technic Beam 3 x 5 L-Shape Thick Yellow Part 32526 Element 4144022 ×4

Technic Pins 57 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×1
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×11
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×24
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×5
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 ×4
  • Technic Pin Long without Friction Ridges - Single Slot Light Gray Part 32556a Element 4154753 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×4
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×6

Technic Axles 36 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×7
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×2
  • Technic Axle 3 Light Gray Part 4519 Element 4186007 ×12
  • Technic Axle 5 Light Gray Part 32073 Element 4141482 ×11

Technic Connectors 24 pieces

  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×4
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×7
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 ×1
  • Technic Axle and Pin Connector Perpendicular Double Black Part 32291 Element 6280394 or 4140430 ×4
  • Technic Axle and Pin Connector Perpendicular Light Gray Part 6536 Element 4173667 or 653602 ×1
  • Technic Pin Connector Perpendicular Long Light Gray Part 32557 Element 4154971 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Yellow Part 42003 Element 6273711 or 4200324 ×1
  • Technic Axle and Pin Connector Perpendicular Double Split Yellow Part 41678 Element 4187125 ×2

Technic Bushes 8 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×3
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×5

Technic Gears 8 pieces

  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1
  • Technic Gear 12 Tooth Double Bevel Light Gray Part 32270 Element 4141454 or 4125322 ×3
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Gray Part 3650c Element 365002 ×1
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Light Gray Part 3648b Element 4107543 or 364802 ×1
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2

Wheels and Tyres 8 pieces

  • Tyre 43.2 x 28 Balloon Small Black Part 6579 Element 657926 ×4
  • Wheel 43.2 x 28 Balloon Small Yellow Part 6580 Element 4496701 or 4183681 ×4

Plates Round Curved and Dishes 6 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×4

Bricks Round and Cones 1 piece

  • Brick Round 2 x 2 with Axle Hole Trans-Yellow Part 3941 Element 6514285 or 6273155 ×1

Technic Special 1 piece

  • Technic Digger Bucket 8 x 10 Yellow Part 2951 Element 4188529 ×1

Technic Steering, Suspension and Engine 1 piece

  • Technic Universal Joint 4L [Complete Assembly] Light Gray Part 9244 Element 9244 ×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.