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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.

Spy Runner

Checking

3439 Spy Runner

110 pieces in 60 part and color combinations, plus 2 minifigures.

LEGO counts 107 pieces. This inventory comes from a separate parts catalog and lists 119, including the 9 parts inside the minifigures; 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

Plates 20 pieces

  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×1
  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 2 x 10 Red Part 3832 Element 383221 ×1
  • Plate 4 x 8 Red Part 3035 Element 303521 ×1
  • Plate 1 x 1 Trans-Green Part 3024 Element 6513967 or 6252046 ×2
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×4
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×4
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×1

Wheels and Tyres 20 pieces

  • Tyre 14 x 4 Smooth Small Single Black Part 3139 Element 313926 ×6
  • Tyre 14 x 9 Smooth Small Wide Slick Black Part 30028 Element 4508215 or 3002826 ×4
  • Wheel 8 x 6 White Part 4624 Element 462401 ×6
  • Wheel 8 x 9 with Round Hole for Wheel Holder Pin White Part 30027a ×4

Plates Special 10 pieces

  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Black Part 6019 Element 601976 or 601926 ×2
  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×2
  • Plate Special 2 x 2 with Wheels Holder Wide Black Part 6157 Element 615726 ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Light Gray Part 3839b Element 383902 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] White Part 4085c Element 408501 ×2

Bricks Sloped 8 pieces

  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Black Part 4287a ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Black Part 4871 Element 4188534 or 487126 ×1
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed Black Part 4854 Element 4643321 or 4603490 ×1
  • Brick Sloped 45° 2 x 2 with Radar Screen Print White Part 3039pr0005 Element 4261941 or 82024 ×1

Tiles Special 6 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×3
  • Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×2
  • Tile Special 1 x 2 with Handle White Part 2432 Element 243201 ×1

Bricks 5 pieces

  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×1
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×1

Plates Wedged 5 pieces

  • Wedge Plate 3 x 4 without Stud Notches Red Part 4859 ×2
  • Wedge Plate 3 x 6 Cut Corners White Part 2419 Element 6552090 or 241901 ×1
  • Wedge Plate 4 x 9 without Stud Notches White Part 2413 Element 241351 or 241301 ×2

Transportation - Sea and Air 5 pieces

  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] Black Part 3475b Element 347526 ×2
  • Propeller 3 Blade Small Black Part 2421 Element 6170693 or 4289255 ×2
  • Tail Shuttle Black Part 6239 Element 6093011 or 4531192 ×1

Bricks Special 4 pieces

  • Brick Special 1 x 2 with Grille Black Part 2877 Element 287726 ×2
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×2

Bricks Wedged 4 pieces

  • Brick Wedged, Sloped 4 x 4 Taper Black Part 4858 Element 4190702 or 4142912 ×1
  • Brick Wedged, Sloped 6 x 4 Cutout, No Stud Notches Black Part 6153a Element 615326 ×1
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs] Black Part 4855 Element 4550004 or 4278249 ×2

Panels 4 pieces

  • Panel 1 x 1 x 1 Corner Black Part 6231 Element 4106347 or 4101709 ×2
  • Panel 1 x 2 x 1 [Square Corners] Black Part 4865a Element 486526 ×2

Transportation - Land 4 pieces

  • Wheel Holder 2 x 2 Thin with Split Wheel Clip Pins Light Gray Part 4870 Element 487002 ×3
  • Steering Stand 1 x 2 with Black Steering Wheel White Part 3829c01 Element 4208543 or 9551 ×1

Minifig Accessories 3 pieces

  • Equipment Radio [Extended Handle, Compact Speaker Grille] Dark Gray Part 3962b Element 4118707 ×1
  • Equipment Signal Paddle White Part 3900 Element 390001 ×2

Bars, Ladders and Fences 2 pieces

  • Bar 1 x 4 x 2 with Studs Red Part 4083 Element 6001207 or 4550383 ×1
  • Bar 6.6L with Stop Ring [Umbrella Stand] White Part 4095 Element 4294998 or 409551 ×1

Hinges, Arms and Turntables 2 pieces

  • Hinge Brick 1 x 2 Locking with Single Finger On Top Black Part 76385 Element 6038008 or 4141113 ×2

Plates Round Curved and Dishes 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×2

Tiles 2 pieces

  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×1
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1

Windscreens and Fuselage 2 pieces

  • Windscreen 4 x 4 x 1 Trans-Dark Blue Part 6238 Element 623843 ×1
  • Windscreen 7 x 4 x 1 2/3 with Hinges Trans-Dark Blue Part 30372 Element 4142911 ×1

Bricks Round and Cones 1 piece

  • Cone 1 x 1 [No Top Groove] Trans-Yellow Part 4589 Element 618844 ×1

Stickers 1 piece

  • Sticker Sheet for Set 3439-1 [No Color/Any Color] Part 23376 Element 4142921 ×1

Minifigures 2 figures

  • Racer, Blue Jacket with Octan Logo, Blue Legs, Blue Cap Minifigure, checked as a whole figure ×1
  • Pilot, Light Gray Jumpsuit with Gauges and Straps, White Helmet with Visor, Headset 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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