BlockTalk Find Your Set

Free tool

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.

Viking Double Catapult versus the Armored Ofnir Dragon

Checking

7021 Viking Double Catapult versus the Armored Ofnir Dragon

487 pieces in 130 part and color combinations, plus 3 minifigures.

The official piece count includes the 18 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.

Show

Piece checklist

Black 111 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Black Part 40379 Element 6055070 or 4508453 Also in Dark Blue ×1
  • Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole Black Part 40378 Element 6487364 or 6055071 ×1
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×5
  • Brick Sloped 45° 2 x 1 Triple with Ovoid Bottom Pin Black Part 3048c Element 304826 ×6
  • Hinge Brick 2 x 2 Top Plate Thin Black Part 6134 Element 4124096 or 613426 ×2
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends Black Part 30552 Element 4158848 ×2
  • Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth Black Part 30553 Element 4143372 ×2
  • Large Figure Skeletal, Torso, Chest (Rahkshi) Black Part 44136 Element 4278806 ×2
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 2 x 12 Black Part 2445 Element 244526 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 6 x 16 Black Part 3027 Element 302726 ×2
  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×3
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×6
  • Technic Axle and Pin Connector Perpendicular Double Split Black Part 41678 Element 4162857 ×3
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×4
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×2
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×6
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×4
  • Technic Brick Special 2 x 3 with Pin Holes, Rotation Joint Ball Half [Vertical Side], Rotation Joint Socket Black Part 47432 Element 4218083 ×2
  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×13
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 2 spares in the box ×18
  • Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Black Part 47455 Element 4272426 or 4213374 ×11
  • Wedge Plate 4 x 4 Cut Corner Black Part 30503 Element 4160025 ×2

Light Bluish Gray 103 pieces

  • Bar 8L - Two Stop Rings / One Pin, Technic Figure Ski Pole [Rounded End] Light Bluish Gray Part 2714a ×3
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Light Bluish Gray Part 2436 Element 4282740 or 4211358 ×4
  • Hinge Brick 1 x 2 Base Light Bluish Gray Part 3937 Element 4211469 ×4
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Light Bluish Gray Part 30364 Element 4211693 ×2
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×1
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×14
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Light Bluish Gray Part 6019 Element 4211518 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Light Bluish Gray Part 2444 Element 4211359 or 2444194 ×4
  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×4
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×7
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×4
  • Technic Axle Connector with Axle Hole Light Bluish Gray Part 32039 Element 4211553 ×3
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×4
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×8
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 2 spares in the box ×24
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×3
  • Technic Pin Long without Friction Ridges - Single Slot Light Bluish Gray Part 32556a Element 4211709 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×6

Dark Bluish Gray 64 pieces

  • Animal / Creature Body Part, Dinosaur / Dragon, Foot Dark Bluish Gray Part 40393 Element 4251119 ×2
  • Bar 1 x 4 x 3 Window [Side Tabs] Dark Bluish Gray Part 6016 Element 4210643 ×1
  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Brick Sloped 45° 2 x 2 Double Convex Dark Bluish Gray Part 3045 Element 4210646 ×2
  • Brick Wedged, Sloped 4 x 4 Triple, Stud Notches Dark Bluish Gray Part 48933 Element 6356488 or 4225873 ×1
  • Chain 17L [21 Links] Dark Bluish Gray Part 30104 Element 4516717 or 4211035 ×2
  • Large Figure Skeletal, Limb, Angular 90°, 3 x 3 x 2 with 2 Ball Joints, and Axle Hole Dark Bluish Gray Part 47300 Element 4540593 or 4289249 ×2
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×6
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×1
  • Rock Boulder 4 x 4, Bottom with Marbled Trans-Neon Orange Pattern Dark Bluish Gray Part 30294pat0001 Element 4288141 ×2
  • Rock Boulder 4 x 4, Top with Marbled Trans-Neon Orange Pattern Dark Bluish Gray Part 30293pat0001 Element 4285879 ×2
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×3
  • Technic Axle and Pin Connector Angled #1 Dark Bluish Gray Part 32013 Element 32013199 or 6296856 ×2
  • Technic Beam 1 x 11 Thick Dark Bluish Gray Part 32525 Element 4603472 or 4534914 ×2
  • Technic Beam 1 x 2 Thin Dark Bluish Gray Part 41677 Element 6338422 or 4210980 ×3
  • Technic Beam 1 x 2 with Ball Joint Angled Dark Bluish Gray Part 50923 Element 4503381 or 4289258 ×3
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 ×6
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Dark Bluish Gray Part 32250 Element 32250199 or 6327165 ×4
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side] Dark Bluish Gray Part 48171 Element 6492115 or 6343337 ×1
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Socket Dark Bluish Gray Part 48169 Element 6278974 or 4225973 ×4
  • Tile Special 1 x 1 with Clip and Straight Tips Dark Bluish Gray Part 2555 Element 6031420 or 4211069 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×7
  • Wheel Wagon Viking with 12 Holes [7 Studs Diameter] Dark Bluish Gray Part 55817 Element 6264148 or 6034887 ×4

Reddish Brown 55 pieces

  • Bar 6.6L with Stop Ring [Umbrella Stand] Reddish Brown Part 4095 Element 4211294 ×2
  • Brick 1 x 3 Reddish Brown Part 3622 Element 4245312 or 4211220 ×1
  • Brick 2 x 10 Reddish Brown Part 3006 Element 6096716 or 4617863 ×1
  • Brick 2 x 6 Reddish Brown Part 2456 Element 4286200 or 4216615 ×2
  • Brick Round 1 x 1 Open Stud Reddish Brown Part 3062b Element 4211183 ×2
  • Brick Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Reddish Brown Part 6222 Element 6177805 or 4223681 ×4
  • Brick Special 1 x 2 Palisade [aka Log] Reddish Brown Part 30136 Element 4211180 ×10
  • Brick Special 1 x 4 Palisade [aka Log] Reddish Brown Part 30137 Element 4211181 ×10
  • Plate 1 x 10 Reddish Brown Part 4477 Element 4223683 ×2
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×2
  • Plate 1 x 8 Reddish Brown Part 3460 Element 4216945 ×1
  • Plate 2 x 10 Reddish Brown Part 3832 Element 4211214 ×2
  • Plate 2 x 6 Reddish Brown Part 3795 Element 4211247 ×5
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Reddish Brown Part 4032a Element 4211159 ×1
  • Tile 1 x 4 with Viking Snakes Knotwork Print Reddish Brown Part 2431pr0032 Element 4490372 ×2
  • Wedge Plate 12 x 3 Left Reddish Brown Part 47397 Element 6503734 or 6035545 ×1
  • Wedge Plate 12 x 3 Right Reddish Brown Part 47398 Element 6503735 or 6035538 ×1
  • Wedge Plate 4 x 2 Left Reddish Brown Part 41770 Element 4205470 ×3
  • Wedge Plate 4 x 2 Right Reddish Brown Part 41769 Element 4205469 ×3

White 44 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small White Part 53451 Element 6270106 or 4568387 2 spares in the box ×34
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×1
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×1
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth White Part 44302a Element 4183048 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] White Part 4085c Element 408501 ×4

Dark Blue 34 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Dark Blue Part 40379 Element 6179092 or 4508456 Also in Black ×4
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Dark Blue Part 3747a Element 6097491 or 4500467 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Dark Blue Part 4871 Element 6475225 or 4261784 ×2
  • Brick Wedged, Curved Inverted 6 x 4 Dark Blue Part 43713 Element 6109925 or 4261774 ×2
  • Brick Wedged, Sloped 4 x 2 Triple Left Dark Blue Part 43710 Element 6612894 or 6135183 ×2
  • Brick Wedged, Sloped 4 x 2 Triple Right Dark Blue Part 43711 Element 6612893 or 6135185 ×2
  • Creature Body Part, Dragon Head Upper Jaw Beaked Dark Blue Part 53456 Element 4277880 ×1
  • Creature Body Part, Dragon Wing 19 x 11 with Marbled Bright Light Orange Pattern Dark Blue Part 51342pat0004 Element 4490187 ×2
  • Creature Body Part, Dragon Wing 8 x 10, with Marbled Yellow Pattern Dark Blue Part 55706pat0001 Element 4490158 ×2
  • Large Figure Skeletal, Limb, Angular 90°, 4 x 4 x 2 with 2 Ball Joints, and Axle Hole Dark Blue Part 41670 Element 4299761 ×2
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Dark Blue Part 32174 Element 4194991 ×3
  • Technic Axle and Pin Connector 2 x 5 with Two Ball Joint Sockets Dark Blue Part 47296 Element 4249003 ×4
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Horizontal Top], Rotation Joint Socket Dark Blue Part 47452 Element 4492782 ×4
  • Technic Brick Special 2 x 3 with Pin Holes, Rotation Joint Ball Half [Horizontal Top], Rotation Joint Socket Dark Blue Part 47454 Element 4218113 ×2

Pearl Light Gray 30 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Pearl Light Gray Part 40379 Element 4508463 or 4493869 ×6
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Pearl Light Gray Part 47457 Element 4493864 or 4286596 ×6
  • Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End Pearl Light Gray Part 47456 Element 4493865 or 4286598 ×3
  • Creature Body Part, Dragon Head Upper Jaw Beaked Pearl Light Gray Part 53456 Element 4493868 or 4293158 ×1
  • Large Figure Foot, with Rotation Joint Ball Half [Vertical Side] Pearl Light Gray Part 47430 Element 4493866 or 4299763 ×2
  • Large Figure Head Fenrakk Pearl Light Gray Part 54273 Element 4493863 or 4279769 ×1
  • Large Figure Shoulder Cover, Armor, Smooth Pearl Light Gray Part 50602 Element 4284499 or 4244770 ×4
  • Large Figure Shoulder Cover, Armor, Spiky Pearl Light Gray Part 54175 Element 4493867 or 4299764 ×2
  • Large Figure Weapon, Claw, Triple, with Axle Pearl Light Gray Part 32506 Element 4284479 or 4236020 ×2
  • Weapon Pike / Spear Round End Pearl Light Gray Part 4497 Element 4278811 or 4267358 ×3

Red 21 pieces

  • Large Figure Weapon Sword, Toa Flame 2 x 12 with Two Holes, Marbled Yellow Pattern Red Part 32558pat0001 Element 4492787 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 1 spare in the box ×8
  • Technic Axle Connector Ridged [with x Hole x Orientation] Red Part 6538b Element 4125189 ×3
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Red Part 42003 Element 6273712 or 4175442 ×1
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 2 spares in the box ×8

Blue 10 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×10

Trans-Neon Orange 6 pieces

  • Brick Round 1 x 1 Open Stud Trans-Neon Orange Part 3062b Element 6238676 or 4153989 ×6

Tan 4 pieces

  • Dish 4 x 4 Inverted [Radar] with Viking Shield Red / White Sections and Red Serpent Print Tan Part 3960pr0006 Element 4273896 ×4

Speckle Black-Silver 2 pieces

  • Weapon Axe Head, Clip-on (Viking) [Thin Clip] Speckle Black-Silver Part 53705 Element 6108518 or 6051378 ×2

Trans-Red 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Trans-Red Part 41669 Element 4163567 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Sets 7018-1, 7021-1 [No Color/Any Color] Part 54208 Element 4277640 ×1

Minifigures 3 figures

  • Viking Warrior - Armour, Sand Blue Arms, Reddish Brown Legs Minifigure, checked as a whole figure ×1
  • Viking Warrior - Armour, Dark Red Arms Minifigure, checked as a whole figure ×1
  • Viking Warrior - Armour, Bare Arms 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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy