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NASA Artemis Space Launch System Rocket

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42221 NASA Artemis Space Launch System Rocket

632 pieces in 157 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.

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

Technic Pins 208 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×8
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 3 spares in the box ×91
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×13
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×51
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×12
  • Technic Pin 1/2 with Friction Dark Bluish Gray Part 89678 Element 6395635 1 spare in the box ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Orange Part 65304 Element 6347790 ×9
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×2
  • Technic Pin 1/2 with Friction Red Part 89678 Element 6378120 1 spare in the box ×4
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×3
  • Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×4
  • Technic Pin Long without Friction Ridges, with Anti-Roll Notch Tan Part 39888 Element 6321305 ×6
  • Technic Pin 1/2 without Friction Ridges White Part 4274 Element 6552190 or 6388018 1 spare in the box ×3

Technic Beams 106 pieces

  • Technic Beam 1 x 11 Thick with Alternating Holes Black Part 73507 Element 6330585 ×2
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×6
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×4
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×2
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 Also in Dark Bluish Gray ×4
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×5
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×2
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×13
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 ×4
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×9
  • Technic Beam 1 x 7 Thick with Alternating Holes Black Part 2391 Element 6435016 ×2
  • Technic Beam 1 x 9 Thin with 3 Holes Black Part 4586 Element 6588040 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×15
  • Technic Beam 2 x 5 L-Shape with Quarter Ellipse Thick Black Part 80286 Element 6407066 or 6378466 ×2
  • Technic Beam 1 x 2 Thin Blue Part 41677 Element 6360123 or 4186834 ×2
  • Technic Beam 1 x 3 Thick Blue Part 32523 Element 4509376 or 4144284 ×2
  • Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 Also in Black ×1
  • Technic Beam Triangle Thin [Type II] Dark Bluish Gray Part 99773 Element 6331431 or 6010862 ×1
  • Technic Beam 1 x 7 Thick Dark Orange Part 32524 Element 6588057 ×3
  • Technic Beam 1 x 13 Thick Light Bluish Gray Part 41239 Element 4522934 or 4156299 ×1
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Light Bluish Gray Part 60483 Element 6265089 or 6004888 ×8
  • Technic Beam 1 x 5 Thick Light Bluish Gray Part 32316 Element 4211651 ×2
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Light Bluish Gray Part 32271 Element 6276836 or 4211624 ×2
  • Technic Beam 1 x 9 Thick Light Bluish Gray Part 40490 Element 6102449 or 4211866 ×2
  • Technic Beam 1 x 9 Thick with Alternating Holes Light Bluish Gray Part 6612 Element 6508520 ×1
  • Technic Beam 1 x 7 Thick Lime Part 32524 Element 6308236 or 4495928 ×1
  • Technic Beam 3 x 3 T-Shape Thick Red Part 60484 Element 6194079 ×1
  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×1
  • Technic Beam 1 x 7 Thick White Part 32524 Element 6564912 or 6318056 ×1
  • Technic Beam 1 x 5 Thin Yellow Part 32017 Element 4503425 or 4199343 ×1
  • Technic Beam 1 x 7 Thick with Alternating Holes Yellow Part 2391 Element 6546803 ×3
  • Technic Connector Beam 3 x 3 Yellow Part 39793 Element 6252654 ×1

Technic Connectors 87 pieces

  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×4
  • Technic Axle Connector with Axle Hole [Reinforced] Black Part 42135 Element 6331716 ×2
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Axle and Pin Connector Perpendicular Double Split [Reinforced] Black Part 69819 Element 6349281 ×2
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Black Part 65487 Element 6282140 ×15
  • Technic Pin Connector Round 1L [Beam] Black Part 18654 Element 6121485 1 spare in the box ×3
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×1
  • Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Black Part 87408 Element 6278412 or 4558692 ×1
  • Technic Axle Connector with Axle Hole [Reinforced] Blue Part 42135 Element 6380612 ×1
  • Technic Axle and Pin Connector Angled #1 Blue Part 32013 Element 6332570 or 4107797 ×8
  • Technic Axle and Pin Connector Angled #2 - 180° Blue Part 32034 Element 6484676 or 4107798 ×2
  • Technic Pin Connector 3L with 2 Pins and Center Hole [Pin Ridges Across Part] Blue Part 46189 Element 6563616 ×2
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Blue Part 65487 Element 6282145 ×7
  • Technic Axle and Pin Connector Angled #1 Light Bluish Gray Part 32013 Element 6296859 or 4211550 ×2
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Light Bluish Gray Part 42195 Element 6273212 ×1
  • Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Along Part) Light Bluish Gray Part 49130 Element 6313453 ×3
  • Technic Pin Connector Hub Perpendicular 3L with 2 Pins Light Bluish Gray Part 2393 Element 6408168 ×2
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Light Bluish Gray Part 44874 Element 6321303 ×5
  • Wire Clip with Axle Hole Light Bluish Gray Part 49283 Element 6471951 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Lime Part 42003 Element 6273728 or 6211876 ×1
  • Technic Pin Connector Round 1L [Beam] Lime Part 18654 Element 6302741 1 spare in the box ×6
  • Technic Pin Connector Round [Slotted] Red Part 62462 Element 6173126 or 4526984 ×2
  • Technic Axle Connector Smooth [with x Hole + Orientation] Reddish Brown Part 59443 Element 4531751 ×3
  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×2
  • Technic Axle and Pin Connector Perpendicular Triple White Part 63869 Element 6402213 ×3
  • Technic Connector 1 x 5 with Worm Gear Hole White Part 7660 Element 6563323 ×1
  • Technic Pin Connector Hub with 1 Axle White Part 22961 Element 6179606 ×1
  • Technic Pin Connector Hub with 2 Axles White Part 27940 Element 6257450 ×3
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Yellow Part 32184 Element 6276974 or 6037676 ×2

Technic Axles 63 pieces

  • Technic Axle 12 Black Part 3708 Element 370826 ×4
  • Technic Axle 32 Black Part 50450 Element 6210821 or 4233937 ×2
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×9
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×2
  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×2
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×9
  • Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×2
  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×4
  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×4
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×4
  • Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×3
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×14
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×2

Bricks Round and Cones 40 pieces

  • Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Black Part 25214 Element 6179182 ×4
  • Cone 2 x 2 x 2 Inverted Black Part 49309 Element 6524895 ×1
  • Cone 2 x 2 x 2, Open Stud Black Part 3942c Element 6092664 or 6022160 ×2
  • Cone 4 x 4 x 2 Hollow No Studs Dark Orange Part 4742 Element 6588058 ×1
  • Cylinder Half 2 x 4 x 2 with 1 x 2 Cutout Dark Orange Part 24593 Element 6588053 ×2
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×2
  • Brick Round 1 x 1 with Fins, Open Stud White Part 4588 Element 6331225 or 6321197 ×1
  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×12
  • Brick Round 2 x 2 x 3 D. Tube with Axle Holes (Crossholes) at Each End, Pin Holes In Sides White Part 7654 Element 6563271 ×6
  • Brick Round 3 x 3 x 2 Recessed Center with 2 x 2 Studs and Axle Hole White Part 73111 Element 6552191 or 6390507 ×1
  • Brick Round, Half 1 x 2 White Part 68013 Element 6615561 or 6382983 ×1
  • Cone 1 x 1 [Top Groove] White Part 59900 Element 6601844 or 4518400 ×1
  • Cone 2 x 2 x 2, Open Stud White Part 3942c Element 6044601 or 6022158 ×1
  • Cone 2 x 2 x 2, Open Stud with Black Dots Print White Part 3942cpr0005 Element 6582841 ×2
  • Cone 3 x 3 x 2 White Part 6233 Element 6188466 or 4655446 ×3

Plates Round Curved and Dishes 38 pieces

  • Dish 2 x 2 Inverted [Radar] Black Part 4740 Element 474026 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 Also in Dark Bluish Gray ×16
  • Plate Special 1 x 4 Rounded with 2 Open Studs Black Part 77845 Element 6428167 ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 Also in Black ×2
  • Dish 2 x 2 Inverted [Radar] White Part 4740 Element 6601845 or 474001 ×2
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 1 spare in the box ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×12
  • Plate Round 4 x 4 with Pin Hole White Part 60474 Element 6564904 or 4515347 ×1

Technic Panels 18 pieces

  • Technic Panel 3 x 11 x 1 Black Part 15458 Element 6080356 ×1
  • Technic Panel 3 x 7 x 1 Black Part 71709 Element 6331935 ×2
  • Technic Panel Curved 3 x 9 Black Part 5427 Element 6470746 ×1
  • Technic Panel Curved and Bent 6 x 3 Black Part 24116 Element 6268012 or 6133246 ×2
  • Technic Panel Fairing #7 3L Very Small Smooth, Side A Black Part 2387 Element 6510991 or 6426589 ×1
  • Technic Panel Fairing #8 3L Very Small Smooth, Side B Black Part 2389 Element 6513874 or 6426590 ×1
  • Technic Panel Fairing 2 x 3 x 1 Black Part 71682 Element 6331026 ×2
  • Technic Panel Curved 7 x 3 with 2 Pin Holes through Panel Surface Dark Orange Part 24119 Element 6588041 ×6
  • Technic Panel Curved 7 x 3 with 2 Pin Holes through Panel Surface White Part 24119 Element 6246996 ×2

Technic Gears 14 pieces

  • Technic Gear 12 Tooth with Axle Hole Blue Part 69778 Element 6396479 ×1
  • Technic Gear 20 Tooth with Axle Hole [+ Opening] Dark Azure Part 69779 Element 6396480 ×1
  • Technic Gear 16 Tooth Reinforced [New Style] Light Bluish Gray Part 94925 Element 4640536 ×4
  • Technic Worm Gear 6M with Axle Hole Light Bluish Gray Part 73763 Element 6417811 ×4
  • Technic Gear 16 Tooth with Clutch on Both Sides Red Part 18946 Element 6100930 ×2
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×1
  • Technic Gear 20 Tooth Bevel Tan Part 32198 Element 6031962 or 4514557 ×1

Technic Beams Special 11 pieces

  • Technic Beam 3 x 0.5 Liftarm with Boss and Blocked, Squared Pin Hole Black Part 61408 Element 6313520 ×1
  • Technic Beam Frame 7 x 11 Black Part 39794 Element 6265643 ×3
  • Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole] Dark Bluish Gray Part 3167 Element 6475314 ×4
  • Technic Beam Frame 3 x 19 with 2 Center Cross Beams, 3 Openings Thick Dark Bluish Gray Part 67491 Element 6396964 ×3

Technic Bushes 11 pieces

  • Technic Bush Black Part 3713 Element 6332148 or 6210506 1 spare in the box ×4
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×3
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×3
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×1

Tiles Special 6 pieces

  • Tile Special Round 2 x 2 with Hole White Part 15535 Element 6310185 ×6

Energy Effects 5 pieces

  • Wave / Flame Small with Pin Trans-Light Blue Part 37775 Element 6514275 or 6357780 1 spare in the box ×1
  • Wave / Flame Rounded with Base Rim Trans-Orange Part 6126b Element 6167741 or 4261397 ×4

Bars, Ladders and Fences 4 pieces

  • Bar 3L Bright Green Part 87994 Element 6161772 1 spare in the box ×2
  • Bar 2L with Stop in Center Sand Green Part 78258 Element 6546184 1 spare in the box ×1
  • Bar 6L with Stop Ring White Part 63965 Element 6170419 or 6081986 1 spare in the box ×1

Minifigs 4 pieces

  • Minifig Trophy Statuette with Astronaut Print White Part 90398pr0007 Element 6582840 1 spare in the box ×4

Technic Special 3 pieces

  • Technic Ball Joint with Through Axle Hole Black Part 53585 Element 4286267 ×2
  • Technic Brick 1 x 2 with Hole and Dual Beam Extensions White Part 85943 Element 6589318 ×1

Technic Steering, Suspension and Engine 3 pieces

  • Technic Steering / CV Ball Joint Female with 3L Axle Dark Bluish Gray Part 52730 Element 6261793 ×1
  • Technic Steering / CV Ball Joint, Cardan Ball with Cross Hole 3L Light Bluish Gray Part 77590 Element 6338424 ×1
  • Technic Universal Joint 3L [Complete Assembly] Light Bluish Gray Part 61903 Element 6335279 or 6321309 ×1

Plates 2 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1

String, Bands and Reels 2 pieces

  • String with End Studs 31L Overall Black Part 14226c31 Element 6510782 or 6096956 ×1
  • Chain 16L [21 Links] Dark Bluish Gray Part 60169 Element 6258887 or 4516456 ×1

Technic Bricks 2 pieces

  • Technic Brick 1 x 1 with Axle Hole Dark Bluish Gray Part 73230 Element 6362259 ×2

Tiles Round and Curved 2 pieces

  • Tile Round 1 x 1 Black Part 98138 Element 6284070 or 6139403 1 spare in the box ×1
  • Tile Round 1 x 1 Red Part 98138 Element 6284574 or 6063445 1 spare in the box ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Lightsaber Hilt with Bottom Ring Bright Light Orange Part 64567 Element 6134252 1 spare in the box ×1

Stickers 1 piece

  • Sticker Sheet for Set 42221-1 [No Color/Any Color] Part 10115267 Element 6580513 ×1

Wheels and Tyres 1 piece

  • Wheel 41 x 15 Dark Orange Part 68327 Element 6462460 ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

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