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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.

Ultimate Defense

Checking

3429 Ultimate Defense

76 pieces in 53 part and color combinations, plus 3 minifigures.

The official piece count includes the 9 parts inside the set's minifigures, which this inventory lists separately; the remaining difference of 3 pieces is within the tolerance of the catalog data.

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

Black 26 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Black Part 4287a ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle 8 Black Part 3707 Element 370726 ×1
  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 ×1
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×3
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Axle and Pin Connector Angled #6 - 90° Black Part 32014 Element 6268905 or 4107767 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Black Part 32064b ×3
  • Technic Cam Black Part 6575 Element 4143187 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×1

Dark Gray 15 pieces

  • Brick 1 x 2 Dark Gray Part 3004 Element 4113909 or 300427 ×3
  • Brick 2 x 4 Dark Gray Part 3001 Element 4113855 or 300127 ×4
  • Brick 2 x 6 Dark Gray Part 2456 Element 4181136 or 4114252 ×1
  • Motor Wind-Up 2 x 6 x 2 & 1/3 with Short Milky White Axle Dark Gray Part 42073c01 ×1
  • Plate 2 x 10 Dark Gray Part 3832 Element 4141769 or 383227 ×1
  • Plate 2 x 2 Dark Gray Part 3022 Element 4114003 or 302227 ×1
  • Plate 2 x 3 Dark Gray Part 3021 Element 4108041 or 302127 ×1
  • Plate 2 x 4 Dark Gray Part 3020 Element 4112232 or 302027 ×1
  • Plate 2 x 6 Dark Gray Part 3795 Element 379527 ×1
  • Plate 2 x 8 Dark Gray Part 3034 Element 303427 ×1

Red 15 pieces

  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×2
  • Brick Sloped 18° 4 x 2 Red Part 30363 Element 4129539 ×1
  • Brick Special 2 x 2 with Pin and Axle Hole Red Part 6232 Element 6347696 or 623221 ×3
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1
  • Sports Field Section 8 x 8 Red Part 30492 Element 4183896 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×3
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×1
  • Tile 2 x 2 with Black Wide Arrow Print Red Part 3068bpr0050 Element 4188134 ×1

Light Gray 8 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Gray Part 4032a Element 403202 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Light Gray Part 2444 Element 244402 ×1
  • Technic Axle 7 Light Gray Part 44294 Element 4183835 ×1
  • Technic Axle Connector with Axle Hole Light Gray Part 32039 Element 4106469 ×1
  • Technic Axle Towball Light Gray Part 2736 Element 273602 ×1
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening] Light Gray Part 32269 Element 4141455 ×1
  • Technic Gear Timing Wheel 8 Tooth Light Gray Part 32060 Element 4141481 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 1 spare in the box ×1

Orange 4 pieces

  • Sports Basketball with Black Lines Print Orange Part 43702pr0001 Element 4186831 ×3
  • Sports Hoop with 2 Studs and Axle Orange Part 43373 Element 4295310 or 4174045 ×1

White 4 pieces

  • Brick 1 x 1 x 5 with Blocked Open or Hollow Stud White Part 2453a ×2
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×1
  • Sports Basketball Net White Part 43374 Element 4295309 or 4174044 ×1

Blue 2 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1
  • Tile 2 x 2 with Black Wide Arrow Print Blue Part 3068bpr0050 Element 4188135 ×1

Tan 1 piece

  • Sports Basketball / Hockey Goalie Minifig Stand Tan Part 43372 Element 4172969 ×1

Trans-Clear 1 piece

  • Brick 1 x 6 x 5 with NBA Logo and Basketball Backboard Print Trans-Clear Part 3754pr0005 Element 4188914 ×1

Minifigures 3 figures

  • Basketball Player, Red Torso, Red Legs #2 Minifigure, checked as a whole figure ×1
  • Basketball Player, Violet Torso, violet Legs 5 Minifigure, checked as a whole figure ×1
  • Basketball Player, Red Torso, Red Legs #2 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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