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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.

Blast-Off Dragster

Checking

2129 Blast-Off Dragster

64 pieces in 29 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 12 pieces

  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×6
  • Technic Beam 1 x 5 Thin Black Part 32017 Element 6114935 or 4503423 ×2
  • Technic Beam 1 x 11.5 Double Bent Thick Red Part 32009 Element 6271160 or 4268653 ×2
  • Technic Beam 1 x 5 Thin Red Part 32017 Element 4503419 or 4163978 ×2

Technic Axles 11 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×3

Technic Bushes 8 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×2
  • Technic Bush 1/2 Toothed Type II [X Opening] Light Gray Part 4265b Element 4100501 or 657702 ×6

Technic Connectors 8 pieces

  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Gray Part 6553 Element 655302 ×1
  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Gray Part 6538b Element 4113804 or 4100408 ×1

Wheels and Tyres 8 pieces

  • Tyre 30.4 x 14 VR Black Part 6578 Element 4561806 or 657826 ×2
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×2
  • Wheel Rim 24 x 14 VR with Center Axle Hole White Part 2994 Element 4496671 or 299401 ×2
  • Wheel with Split Axle hole White Part 3482 Element 4279395 or 4194244 ×2

Technic Pins 7 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×5

Technic Gears 3 pieces

  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×3

String, Bands and Reels 2 pieces

  • Technic Reel 3 x 2 Blue Part 32012 Element 4107179 ×1
  • String, Elastic Thin 82L White Part 71831c82 ×1

Tubes and Hoses 2 pieces

  • Hose Rigid 3mm D. 11L / 8.8cm Red Part 75c11 Element 4191536 ×2

Plates Round Curved and Dishes 1 piece

  • Plate Round 1 x 1 with Solid Stud Light Gray Part 6141 Element 614102 ×1

Stickers 1 piece

  • Sticker Sheet for Set 2129-1, 8205-1 [No Color/Any Color] Part 71459 Element 4106745 ×1

Technic Bricks 1 piece

  • Technic Brick 1 x 16 [15 Pin Holes] Red Part 3703 Element 370321 ×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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