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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.

Hayabusa

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21101 Hayabusa

365 pieces in 97 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Black 135 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×8
  • Brick 1 x 1 x 5 with Solid Stud Black Part 2453b Element 4566308 or 4144539 ×4
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×1
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×4
  • Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 Also in Dark Bluish Gray ×3
  • Panel 1 x 6 x 5 Black Part 59349 Element 4513539 ×6
  • Plate 1 x 1 Black Part 3024 Element 302426 ×12
  • Plate 1 x 10 Black Part 4477 Element 447726 ×4
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 1 x 6 Black Part 3666 Element 366626 ×8
  • Plate 1 x 8 Black Part 3460 Element 346026 ×4
  • Plate 2 x 10 Black Part 3832 Element 383226 ×8
  • Tap 1 x 1 without Hole in Spout Black Part 4599b Element 459926 ×8
  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×4
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×4
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×4
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×4
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×12
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×8
  • Technic Tread Sprocket Wheel Small 6 Tooth Black Part 57520 Element 4662228 or 4544527 ×1
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×4
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×4
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×8
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1

Yellow 72 pieces

  • Bar 4L (Lightsaber Blade / Wand) Yellow Part 30374 Element 6116606 or 4193511 ×3
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 10 Yellow Part 6111 Element 4200026 or 4192022 ×4
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×4
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×2
  • Brick 2 x 2 Corner Yellow Part 2357 Element 235774 or 235724 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×5
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×8
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×1
  • Plate 4 x 6 Yellow Part 3032 Element 303224 ×5
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Yellow Part 87580 Element 6126050 or 4565386 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Yellow Part 32064b ×4
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×8
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 1 spare in the box ×1
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×10
  • Tile 2 x 4 with Groove Yellow Part 87079 Element 6388490 or 4560181 ×4

Light Bluish Gray 69 pieces

  • Bar 6L with Stop Ring Light Bluish Gray Part 63965 Element 6170418 or 6081975 ×1
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×8
  • Brick Round 2 x 2 with Axle Hole Light Bluish Gray Part 3941 Element 4211526 ×2
  • Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] Light Bluish Gray Part 85080 Element 6078259 or 4567448 ×4
  • Dish 10 x 10 Inverted (Radar) with Solid Studs Light Bluish Gray Part 50990b Element 4248833 ×1
  • Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Light Bluish Gray Part 4285b Element 4211487 ×1
  • Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] Light Bluish Gray Part 11055 Element 6011817 or 4271362 ×1
  • Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth Light Bluish Gray Part 30553 Element 4222047 ×3
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Light Bluish Gray Part 30383 Element 6265694 or 4219913 ×3
  • Plate 6 x 12 Light Bluish Gray Part 3028 Element 4211400 ×3
  • Plate 6 x 6 Light Bluish Gray Part 3958 Element 4211474 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Bluish Gray Part 2540 Element 4211632 ×3
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×5
  • Technic Brick 1 x 1 with Pin Hole Light Bluish Gray Part 6541 Element 4211535 ×8
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×1
  • Technic Plate 2 x 6 [5 Holes] Light Bluish Gray Part 32001 Element 4211542 ×2
  • Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Light Bluish Gray Part 32125 Element 4262978 or 4211842 ×1
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 1 spare in the box ×3
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×3
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×7

Dark Bluish Gray 55 pieces

  • Brick 2 x 2 Corner Dark Bluish Gray Part 2357 Element 4211109 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 1 spare in the box ×5
  • Brick Sloped 30° 1 x 2 x 2/3 Dark Bluish Gray Part 85984 Element 4567887 ×1
  • Brick Sloped 33° 3 x 2 Dark Bluish Gray Part 3298 Element 4211106 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Bluish Gray Part 3040b Element 4211135 ×7
  • Brick Sloped 45° 2 x 2 Dark Bluish Gray Part 3039 Element 4211054 ×8
  • Brick Special 2 x 2 with Pin and Axle Hole Dark Bluish Gray Part 6232 Element 6408023 or 4211046 ×3
  • Cone 1 x 1 [Top Groove] Dark Bluish Gray Part 59900 Element 4529240 Also in Black ×8
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 ×4
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×5
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×1
  • Technic Plate 2 x 4 [3 Holes] Dark Bluish Gray Part 3709 Element 4227398 ×5
  • Tile Special 1 x 1 with Clip with Rounded Tips Dark Bluish Gray Part 12825 Element 6030710 ×2

White 9 pieces

  • Cone 1 x 1 [Top Groove] White Part 59900 Element 6601844 or 4518400 ×1
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×2

Red 6 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Red Part 30414 Element 4177991 or 4157223 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×4

Reddish Brown 6 pieces

  • Brick 1 x 3 Reddish Brown Part 3622 Element 4245312 or 4211220 ×5
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×1

Blue 4 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Blue Part 30414 Element 4212411 or 4141768 ×2
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 1 spare in the box ×2

Trans-Dark Blue 3 pieces

  • Tile Round 1 x 1 Trans-Dark Blue Part 98138 Element 6514190 or 6273627 1 spare in the box ×3

Flat Silver 2 pieces

  • Tile Round 1 x 1 Flat Silver Part 98138 Element 6238890 or 4655241 1 spare in the box ×2

Metallic Silver 2 pieces

  • Cone 1 x 1 [Top Groove] Metallic Silver Part 59900 Element 6051385 or 4529351 ×2

Metallic Gold 1 piece

  • Dish 3 x 3 Inverted [Radar] Metallic Gold Part 43898 Element 6189071 or 6010442 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 21101-1 [No Color/Any Color] Part 11058 Element 6010438 ×1

Minifigures 1 figure

  • J. Kawaguchi / Hayabusa Project Manager 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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