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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.

Iron Man: Detroit Steel Strikes

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76077 Iron Man: Detroit Steel Strikes

366 pieces in 141 part and color combinations, plus 3 minifigures.

LEGO counts 377 pieces. This inventory comes from a separate parts catalog and lists 378, including the 12 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.

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

Light Bluish Gray 71 pieces

  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×4
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×4
  • Brick Curved Inverted 4 x 1 Light Bluish Gray Part 13547 Element 6132872 ×2
  • Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Light Bluish Gray Part 85984 Element 4568637 ×1
  • Brick Special 1 x 2 with Handle Light Bluish Gray Part 30236 Element 4211580 ×2
  • Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×2
  • Launcher Trigger, Weapon Rapid Shooter, Flat Axle Hole Light Bluish Gray Part 18587 Element 6097090 ×1
  • Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 1 spare in the box ×2
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×7
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Light Bluish Gray Part 48336 Element 4244627 ×3
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Light Bluish Gray Part 60470b Element 6337268 or 4556157 ×1
  • Plate Special 1 x 2 with Door Rail Light Bluish Gray Part 32028 Element 4211568 ×4
  • Plate Special 1 x 2 with Pin Hole Underneath Light Bluish Gray Part 18677 Element 6168633 or 6089147 ×4
  • Steering Stand 1 x 2 with Black Steering Wheel Light Bluish Gray Part 3829c01 Element 4226995 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×3
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×1
  • Technic Beam 1 x 6 Thin Light Bluish Gray Part 32063 Element 6170293 or 4211586 ×2
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 2 spares in the box ×4
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×4
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×1
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2
  • Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring Light Bluish Gray Part 13971 Element 6359807 or 6044729 ×4

Dark Bluish Gray 65 pieces

  • Arm Mechanical with Clip [Thick Support] Dark Bluish Gray Part 98313 Element 6276870 or 6012812 ×6
  • Bar Holder with Clip Dark Bluish Gray Part 11090 Element 6336970 or 6015890 ×2
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×2
  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×2
  • Panel 1 x 1 x 1 Corner Dark Bluish Gray Part 6231 Element 6025235 or 4519967 ×2
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 ×4
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×2
  • Plate 2 x 2 Corner Dark Bluish Gray Part 2420 Element 4210635 ×6
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Bluish Gray Part 2654 Element 4613980 or 4278274 ×6
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×2
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×4
  • Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] Dark Bluish Gray Part 10247 Element 6047417 ×2
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×3
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×2
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 ×1
  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Dark Bluish Gray Part 32249 Element 6590060 or 6336745 ×2
  • Technic Brick Special 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball Dark Bluish Gray Part 57909b Element 4497253 ×4
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×1
  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×5
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 Also in Flat Silver ×1
  • Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×2

Red 49 pieces

  • Bracket 1 x 2 - 2 x 4 Red Part 93274 Element 6118830 or 4616800 ×1
  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Red Part 6091 Element 6184782 or 609121 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×2
  • Brick Curved 4 x 1 Double, No Studs with Silver Car Grill and Bumper and Yellow 'LOLA' License Plate Print Red Part 93273pr0002 Element 6175894 ×1
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Red Part 11153 Element 6583512 or 6045937 ×2
  • Brick Curved 4 x 2 No Studs Red Part 93606 Element 4613174 ×2
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Red Part 15672 Element 6053011 or 4603263 ×2
  • Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×4
  • Brick Sloped Inverted 45° 6 x 1 Double with 1 x 4 Recessed Red Part 52501 Element 4259678 ×1
  • Door 1 x 3 x 1 Left Red Part 3822 Element 4288209 or 4188202 ×1
  • Door 1 x 3 x 1 Right Red Part 3821 Element 4537986 or 4288208 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×5
  • Plate 1 x 3 Red Part 3623 Element 362321 ×2
  • Plate 1 x 6 Red Part 3666 Element 366621 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate Special 1 x 2 with Pin Hole Underneath Red Part 18677 Element 6168634 or 6109459 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1
  • Tile 1 x 1 with Groove Red Part 3070b Element 307021 1 spare in the box ×4
  • Tile 1 x 6 with Groove Red Part 6636 Element 4113858 ×2
  • Tile 1 x 8 with Groove Red Part 4162 Element 416221 ×2
  • Tile 2 x 4 with Groove Red Part 87079 Element 4560179 ×1
  • Wheel Arch, Mudguard 4 x 2 1/2 x 1 Red Part 98282 Element 6170507 or 6143434 ×4

Black 45 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Black Part 99780 Element 6020193 ×4
  • Bracket 1 x 2 - 2 x 2 Inverted Black Part 99207 Element 6000650 ×4
  • Hair Short, Tousled with Side Part Black Part 62810 Element 4569091 or 4526110 ×1
  • Large Figure Skeletal, Limb, 5L with Ball Joint on Axle and Ball Socket Black Part 90609 Element 4593555 ×2
  • Launcher, Weapon Rapid Shooter Six Barrel, 3 Fingers Black Part 18588 Element 6100104 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Black Part 60470b Element 6310268 or 4556158 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×2
  • Technic Axle and Pin Connector Angled #6 - 90° Black Part 32014 Element 6268905 or 4107767 ×2
  • Technic Axle and Pin Connector Perpendicular Triple Black Part 63869 Element 6362991 or 6007966 ×1
  • Technic Ball Joint with Through Axle Hole Black Part 53585 Element 4286267 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×2
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Black Part 92013 Element 4619763 ×4
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Black Part 18575 Element 6346535 or 6093977 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×4
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×1
  • Tyre Offset Tread with Center Band 23 x 7 Black Part 61254 Element 4541455 ×4
  • Vehicle Base 4 x 10 x 2/3 with 4 x 2 Recessed Center with Smooth Underside Black Part 30029 Element 4656764 or 4277681 ×1
  • Weapon Gun / Pistol Two Barrel, 10 Ribs Black Part 95199 Element 4659662 ×1

Dark Blue 32 pieces

  • Brick Curved 2 x 2 x 2/3 Dark Blue Part 15068 Element 6554196 or 6061569 ×6
  • Brick Sloped 18° 4 x 1 Dark Blue Part 60477 Element 6101304 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Blue Part 54200 Element 4504374 or 4502092 2 spares in the box ×12
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Blue Part 3747b ×2
  • Plate 2 x 3 Dark Blue Part 3021 Element 6554192 or 4530028 ×1
  • Wedge Plate 3 x 6 Cut Corners Dark Blue Part 2419 Element 6127326 or 4613323 ×1
  • Wedge Plate 4 x 2 Left Dark Blue Part 41770 Element 4529954 or 4247065 ×3
  • Wedge Plate 4 x 2 Right Dark Blue Part 41769 Element 4502091 or 4247066 ×3

Dark Red 16 pieces

  • Large Figure Shoulder Cover, Armor, Round, Smooth [Plain] Dark Red Part 21560 Element 6443919 or 6133273 ×2
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Dark Red Part 92593 Element 6020075 ×4
  • Tile 1 x 1 with Groove Dark Red Part 3070b Element 4550169 or 4187196 1 spare in the box ×4
  • Tile 1 x 3 Dark Red Part 63864 Element 4583299 ×2
  • Wedge Plate 3 x 3 Cut Corner Dark Red Part 2450 Element 4539064 or 4504285 ×4

Flat Silver 15 pieces

  • Plate Round 1 x 1 with Solid Stud Flat Silver Part 6141 Element 4633691 ×14
  • Tile Special 1 x 2 Grille with Bottom Groove Flat Silver Part 2412b Element 4619636 Also in Dark Bluish Gray ×1

Orange 12 pieces

  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×12

Trans-Light Blue 11 pieces

  • Brick Round 1 x 1 Open Stud Trans-Light Blue Part 3062b Element 6514238 or 6238677 ×3
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Light Blue Part 54200 Element 6245277 or 6073445 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×3
  • Wave / Power Blast Rounded Energy with Bar Handle Trans-Light Blue Part 27393 Element 6581317 or 6353237 ×3

White 10 pieces

  • Large Figure Limb Cover, Size 3, Armor with Ball Joint Socket White Part 90641 Element 6045952 or 4632612 ×2
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×4
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole White Part 92013 Element 6021315 or 4619762 ×2
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×2

Tan 9 pieces

  • Brick Special 1 x 2 with 2 Studs on 1 Side Tan Part 11211 Element 6024495 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2
  • Technic Engine Crankshaft Center Tan Part 2854 Element 6355727 or 6013937 ×2
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×2
  • Tile Special 2 x 2 Inverted Tan Part 11203 Element 6013081 ×1

Reddish Brown 7 pieces

  • Brick 2 x 3 Reddish Brown Part 3002 Element 4216668 ×1
  • Hair Spiked Reddish Brown Part 98385 Element 6112609 or 4652797 ×1
  • Tile 1 x 2 with Groove Reddish Brown Part 3069b Element 4211151 ×3
  • Tile Special 1 x 2 with Handle Reddish Brown Part 2432 Element 4211219 ×2

Trans-Clear 7 pieces

  • Plate 1 x 2 Trans-Clear Part 3023 Element 6514001 or 6240204 ×2
  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×4
  • Windscreen 3 x 6 x 1 Curved with 2 Circular Stud Holders in Bottom Trans-Clear Part 62360 Element 4523573 ×1

Yellow 7 pieces

  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×6

Trans-Dark Blue 3 pieces

  • Plate 1 x 2 Trans-Dark Blue Part 3023 Element 6514004 or 6240215 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Dark Blue Part 2654 Element 6581774 or 6171732 ×2

Trans-Orange 3 pieces

  • Plate 1 x 2 Trans-Orange Part 3023 Element 6514005 or 6240217 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Orange Part 2654 Element 6513980 or 6171727 ×2

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

[No Color/Any Color] 2 pieces

  • Comic Book, Super Heroes, Marvel, Avengers, Jan 2017 [No Color/Any Color] Part 6188123 Element 6188130 or 6188123 ×1
  • Sticker Sheet for Set 76077-1 [No Color/Any Color] Part 29976 Element 6176743 ×1

Minifigures 3 figures

  • Justin Hammer Minifigure, checked as a whole figure ×1
  • Agent Coulson Minifigure, checked as a whole figure ×1
  • Iron Man / Invincible Iron Man 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

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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

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