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.

Dino-Jet

Checking

3551 Dino-Jet

80 pieces in 22 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

Black 24 pieces

  • Wheel 32mm Znap Propeller Black Part 32219 Element 4120493 ×4
  • Znap Beam 11, 4 Holes, 2 Bends Black Part 32204 Element 4120187 ×1
  • Znap Beam 16, 14 Holes, Curved Black Part 32216 Element 4125300 or 4125155 ×2
  • Znap Beam 16, 9 Holes, 5 Bends Black Part 32208 Element 4120423 ×1
  • Znap Beam 3, 1 Hole Black Part 32210 Element 4128660 or 4120411 ×4
  • Znap Beam 7, 3 Holes Black Part 32203 Element 4128652 or 4120186 ×4
  • 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 ×5
  • Znap Grid 9 x 7, 15 Holes Black Part 32213 Element 4125298 or 4125163 ×1

Purple 18 pieces

  • Znap Connector 3 x 3 - 4 way B (Beam) Purple Part 32211 Element 4120200 ×18

Red 18 pieces

  • Wheel 32mm Znap Propeller Red Part 32219 Element 4120492 ×2
  • Znap Beam 11, 4 Holes, 2 Bends Red Part 32204 Element 4120421 ×2
  • Znap Beam 16, 9 Holes, 5 Bends Red Part 32208 Element 4120422 ×2
  • Znap Beam 7, 3 Holes Red Part 32203 Element 4128654 or 4120420 ×4
  • Znap Beam 9, 5 Holes, 4 Bends (Half-Octagon) Red Part 32206 Element 4120416 ×6
  • Znap Beam 9, 8 Holes, Triangular Red Part 32214 Element 4125311 or 4120424 ×2

Light Gray 14 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Znap Connector 1 x 3 - 2 way A Light Gray Part 32212 Element 4120191 ×10

Dark Gray 2 pieces

  • Znap Connector 3 x 3 - 4 way A (Axial) Dark Gray Part 32221 Element 4120479 ×1
  • Znap Crank Connector 1 x 2 x 3 Dark Gray Part 32207 Element 4120472 ×1

White 2 pieces

  • Technic Axle 5.5 with Stop [Flat Short End] White Part 32209 Element 4120471 ×2

Yellow 2 pieces

  • Znap Connector 3 x 3 - 4 way C (Closed) Yellow Part 76319 Element 4125496 ×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.