BlockTalk Find Your Set

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.

Dumper

Checking

8451 Dumper

183 pieces in 53 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.

Show

Piece checklist

Technic Beams 58 pieces

  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×1
  • Technic Beam 1 x 2 Thick Black Part 43857 Element 4385726 or 4177444 ×2
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×4
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×4
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×2
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Black Part 32348 Element 6278125 or 4128593 ×2
  • 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 ×1
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Black Part 32250 Element 6327162 or 4128557 ×6
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×2
  • Technic Beam 1 x 11.5 Double Bent Thick Yellow Part 32009 Element 6271150 or 6257104 ×2
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×8
  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×4
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Yellow Part 6629 Element 6524459 or 6375945 ×4
  • Technic Beam 2 x 4 L-Shape Thick Yellow Part 32140 Element 6271828 or 4141628 ×4
  • Technic Beam 3 x 3 L-Shape Thin Yellow Part 32056 Element 6271812 or 4112289 ×2
  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Yellow Part 32249 Element 4500483 or 4157537 ×2
  • Technic Beam 3 x 5 L-Shape Thick Yellow Part 32526 Element 4144022 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Yellow Part 32250 Element 6522621 or 6371956 ×4

Technic Pins 48 pieces

  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×1
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×13
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×12
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 1 spare in the box ×6
  • Technic Pin Long without Friction Ridges - Single Slot Light Gray Part 32556a Element 4154753 ×3
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×11

Technic Axles 29 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×7
  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 3 Light Gray Part 4519 Element 4186007 ×7
  • Technic Axle 5 Light Gray Part 32073 Element 4141482 ×9

Technic Connectors 17 pieces

  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×7
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×2
  • 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 Light Gray Part 6536 Element 4173667 or 653602 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Yellow Part 32034 Element 6344325 or 6210804 ×2
  • Technic Axle and Pin Connector Perpendicular Yellow Part 6536 Element 6261367 or 4173666 ×2

Wheels and Tyres 12 pieces

  • Tyre 43.2 x 28 Balloon Small Black Part 6579 Element 657926 ×6
  • Wheel 43.2 x 28 Balloon Small Yellow Part 6580 Element 4496701 or 4183681 ×6

Technic Bushes 5 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 1 spare in the box ×5

Technic Gears 5 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 ×1
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening] Light Gray Part 32269 Element 4141455 ×2
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Light Gray Part 3648b Element 4107543 or 364802 ×1

Plates Round Curved and Dishes 4 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 ×2

Technic Panels 4 pieces

  • Technic Panel Fairing # 5 Small Short, Large Hole, Side A Yellow Part 32527 Element 4540180 or 4143186 ×1
  • Technic Panel Fairing # 6 Small Short, Large Hole, Side B Yellow Part 32528 Element 4540181 or 4143185 ×1
  • Technic Panel Fairing # 7 Small Long, Large Hole, Side A Yellow Part 32534 Element 4158879 ×1
  • Technic Panel Fairing # 8 Small Long, Large Hole, Side B Yellow Part 32535 Element 4158888 ×1

Bricks Round and Cones 1 piece

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

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy