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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.

Heli-Transport (Rota-Beast)

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3591 Heli-Transport (Rota-Beast)

265 pieces in 43 part and color combinations.

LEGO counts 264 pieces. This inventory comes from a separate parts catalog and lists 265; 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

Znap 228 pieces

  • Znap Beam 1/4 Circle Radius 8L Black Part 32230 Element 4120489 ×10
  • Znap Beam 15, 7 Holes Black Part 32229 Element 4120199 ×6
  • Znap Beam 3, 1 Hole Black Part 32210 Element 4128660 or 4120411 ×14
  • Znap Beam 7, 3 Holes Black Part 32203 Element 4128652 or 4120186 ×18
  • Znap Beam 9, 5 Holes, 4 Bends (Half-Octagon) Black Part 32206 Element 4120189 ×2
  • Znap Beam 9, 8 Holes, Triangular Black Part 32214 Element 4125309 or 4125160 ×6
  • Znap Grid 9 x 7, 15 Holes Black Part 32213 Element 4125298 or 4125163 ×3
  • Znap Connector 3 x 3 - 4 way A (Axial) Dark Gray Part 32221 Element 4120479 ×2
  • Znap Crank Connector 1 x 2 x 3 Dark Gray Part 32207 Element 4120472 ×7
  • Znap Beam 11, 4 Holes, 2 Bends Green Part 32204 Element 4120428 ×4
  • Znap Beam 15, 7 Holes Green Part 32229 Element 4120449 ×12
  • Znap Beam 16, 14 Holes, Curved Green Part 32216 Element 4125302 or 4120444 ×4
  • Znap Beam 3, 1 Hole Green Part 32210 Element 4128661 or 4120412 ×2
  • Znap Beam 7, 3 Holes Green Part 32203 Element 4128653 or 4120408 ×6
  • Znap Beam 9, 5 Holes, 4 Bends (Half-Octagon) Green Part 32206 Element 4120410 ×2
  • Znap Beam 9, 8 Holes, Triangular Green Part 32214 Element 4125310 or 4125161 ×2
  • Znap Grid 9 x 7, 15 Holes Green Part 32213 Element 4125299 or 4120442 ×2
  • Znap Grid Motor Holder Green Part 32225 Element 4121531 ×1
  • Znap Connector 1 x 3 - 2 way A Light Gray Part 32212 Element 4120191 ×38
  • Znap Connector 3 x 3 - 4 way B (Beam) Purple Part 32211 Element 4120200 ×69
  • Znap Beam 1/2 Circle Radius 2L Yellow Part 32205 Element 4128658 or 4120440 ×2
  • Znap Beam 15, 7 Holes Yellow Part 32229 Element 4120486 ×2
  • Znap Beam 16, 14 Holes, Curved Yellow Part 32216 Element 4125301 or 4120443 ×2
  • Znap Beam 16, 9 Holes, 5 Bends Yellow Part 32208 Element 4120441 ×2
  • Znap Beam 3, 1 Hole Yellow Part 32210 Element 4128659 or 4120190 ×2
  • Znap Beam 7, 3 Holes Yellow Part 32203 Element 4128655 or 4120427 ×3
  • Znap Beam 9, 8 Holes, Triangular Yellow Part 32214 Element 4125308 or 4120193 ×1
  • Znap Beam Double Curve 4 Holes Yellow Part 32218 Element 4125305 or 4125152 ×1
  • Znap Connector 3 x 3 - 4 way C (Closed) Yellow Part 76319 Element 4125496 ×2
  • Znap Grid Motor Holder Yellow Part 32225 Element 4120419 ×1

Technic Axles 10 pieces

  • Technic Axle 12 White Part 3708 Element 4655283 or 4222794 ×1
  • Technic Axle 5.5 with Stop [Flat Short End] White Part 32209 Element 4120471 ×9

Wheels and Tyres 10 pieces

  • Wheel 32mm Znap Propeller Black Part 32219 Element 4120493 ×4
  • Wheel 68mm Znap Propeller (9 x 2) Black Part 32220 Element 4120446 ×6

Technic Gears 6 pieces

  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×4
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2

Technic Connectors 4 pieces

  • Technic Axle and Pin Connector Angled #1 Blue Part 32013 Element 6332570 or 4107797 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Gray Part 6538b Element 4113804 or 4100408 ×2

Electronics 3 pieces

  • Battery Box, 9V 4 x 14 x 4 with Yellow Base [Complete Assembly] Black Part 2847c02 Element 4109814 or 75140 ×1
  • Wire with Brick 2 x 2 x 2/3 Pair, 69L Black Part 5306bc069 Element 75782 ×1
  • Motor, 9V Mini [Old Style] Light Gray Part 71427c01 Element 4107786 ×1

Plates Special 2 pieces

  • Plate Special 2 x 2 with Pin on Bottom Blue Part 2476a Element 4237078 or 4170321 ×2

Technic Pins 2 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×2

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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