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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.

Rapid Return

Checking

3584 Rapid Return

44 pieces in 29 part and color combinations, plus 1 minifigure.

The official piece count includes the 3 parts inside the set's minifigures, which this inventory lists separately. 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

Plates 10 pieces

  • Plate 2 x 10 Dark Gray Part 3832 Element 4141769 or 383227 ×3
  • Plate 2 x 2 Dark Gray Part 3022 Element 4114003 or 302227 ×1
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate 1 x 6 Tan Part 3666 Element 4124067 or 366605 ×2
  • Plate 2 x 4 Tan Part 3020 Element 4114309 or 302005 ×2

Panels 6 pieces

  • Panel 1 x 2 x 1 [Square Corners] Red Part 4865a ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thick Wall] Red Part 43337 Element 4546878 or 4247100 ×4

Minifig Accessories 5 pieces

  • Sports Basketball with Black Lines Print Orange Part 43702pr0001 Element 4186831 ×2
  • Sports Hoop with 2 Studs and Axle Orange Part 43373 Element 4295310 or 4174045 ×1
  • Sports Basketball / Hockey Goalie Minifig Stand Tan Part 43372 Element 4172969 ×1
  • Sports Basketball Net White Part 43374 Element 4295309 or 4174044 ×1

Tiles Special 4 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×2
  • Tile Special 1 x 2 with Handle Red Part 2432 Element 243221 ×2

Bricks 3 pieces

  • Brick 1 x 6 x 5 with NBA Logo and Basketball Backboard Print Red Part 3754pr0005 Element 4188912 ×1
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×2

Bricks Sloped 3 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×1

Hinges, Arms and Turntables 2 pieces

  • Hinge Brick 1 x 2 Base Light Gray Part 3937 Element 393702 ×1
  • Hinge Brick 2 x 2 Top Plate Thin Red Part 6134 Element 613421 ×1

Technic Axles 2 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1

Technic Bricks 2 pieces

  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Red Part 32064b ×2

Tiles 2 pieces

  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×2

Baseplates 1 piece

  • Sports Field Section 8 x 8 Tan Part 30492 Element 4188999 ×1

Bricks Round and Cones 1 piece

  • Brick Round 2 x 2 with Axle Hole Tan Part 3941 Element 4125220 or 614305 ×1

Plates Special 1 piece

  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×1

Technic Connectors 1 piece

  • Technic Axle and Pin Connector Angled #6 - 90° Light Gray Part 32014 Element 4143353 or 4106377 ×1

Technic Pins 1 piece

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1

Minifigures 1 figure

  • Basketball Player, Violet Torso, Violet Legs 3 Minifigure, checked as a whole figure ×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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