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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.

Rebel U-Wing Starfighter

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75399 Rebel U-Wing Starfighter

578 pieces in 177 part and color combinations, plus 4 minifigures.

The official piece count includes the 16 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

White 172 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted White Part 99207 Element 6552151 or 6548279 ×6
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×8
  • Brick Curved 2 x 1 No Studs [1/2 Bow] White Part 11477 Element 6552145 or 6548276 ×4
  • Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×9
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] White Part 11153 Element 6578744 or 6564905 ×2
  • Brick Round 4 x 4 Centre Hole White Part 87081 Element 6619304 or 4558956 ×4
  • Brick Round 4 x 4 with Recessed Center White Part 68325 Element 6564916 or 6410688 ×4
  • Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] White Part 85080 Element 6619303 or 6078115 ×16
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×4
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×6
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] White Part 15672 Element 6552150 or 6550153 ×16
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud White Part 28192 Element 6552164 or 6166894 ×2
  • Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×2
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right White Part 29119 Element 6552169 or 6213881 ×1
  • Brick Wedged, Sloped 2 x 5 Left White Part 3504 Element 6552213 or 6482745 ×1
  • Brick Wedged, Sloped 2 x 5 Right White Part 3505 Element 6552212 or 6482744 ×1
  • Panel 1 x 2 x 1 [Rounded Corners] White Part 4865b Element 6552161 or 6146215 Also in Trans-Clear ×2
  • Plate 1 x 12 White Part 60479 Element 6552130 or 6548269 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×8
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×2
  • Plate 2 x 14 White Part 91988 Element 6552188 or 6359065 ×3
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×4
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×2
  • Plate 3 x 3 White Part 11212 Element 6552153 or 6104805 ×2
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version White Part 4304 Element 6603760 or 6469441 ×2
  • Plate Special 3 x 4 with 1 x 4 Center Studs [Plain] White Part 88646 Element 6550154 or 6132741 ×8
  • Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×4
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×5
  • Tile 1 x 3 White Part 63864 Element 6552134 or 6548270 ×2
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×1
  • Tile 2 x 2 Curved, Macaroni White Part 27925 Element 6550162 or 6172674 ×16
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×2
  • Tile 2 x 3 White Part 26603 Element 6552162 or 6550161 ×1
  • Wedge Plate 12 x 3 Left White Part 47397 Element 6552123 or 4208987 ×2
  • Wedge Plate 12 x 3 Right White Part 47398 Element 6552124 or 4209005 ×2
  • Wedge Plate 2 x 2 Cut Corner White Part 26601 Element 6552166 or 6550160 ×2
  • Wedge Plate 3 x 2 Left White Part 43723 Element 6552121 or 4179875 ×1
  • Wedge Plate 3 x 2 Right White Part 43722 Element 6552120 or 4179874 ×1
  • Wedge Plate 3 x 3 Cut Corner White Part 2450 Element 6601842 or 4280148 ×2
  • Wedge Plate 6 x 2 Left White Part 78443 Element 6552194 or 6392747 ×1
  • Wedge Plate 6 x 2 Right White Part 78444 Element 6552192 or 6392746 ×1

Light Bluish Gray 154 pieces

  • Bracket 1 x 1 - 1 x 2 Inverted Light Bluish Gray Part 73825 Element 6345639 ×4
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×4
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×1
  • Brick Curved 2 x 2 x 2/3 Light Bluish Gray Part 15068 Element 6102357 ×3
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Light Bluish Gray Part 61409 Element 6092111 ×2
  • Brick Sloped 18° 4 x 1 Light Bluish Gray Part 60477 Element 6013497 ×4
  • Brick Sloped 30° 1 x 2 x 2/3 Light Bluish Gray Part 85984 Element 4568637 ×5
  • Brick Sloped 45° 2 x 4 Light Bluish Gray Part 3037 Element 4211409 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes] Light Bluish Gray Part 76959 Element 6435857 ×2
  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Light Bluish Gray Part 60475b Element 6345426 or 4533772 ×4
  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Light Bluish Gray Part 29120 Element 6225139 ×2
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Light Bluish Gray Part 29119 Element 6225142 ×1
  • Hinge Brick 1 x 2 Base Light Bluish Gray Part 3937 Element 4211469 ×2
  • Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×2
  • Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly] Light Bluish Gray Part 1927 Element 6416524 ×4
  • Hinge Plate 3 x 4 Locking Dual 2 Finger, 7 teeth Light Bluish Gray Part 50337 Element 6266279 ×1
  • Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Light Bluish Gray Part 15207 Element 6071299 ×1
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×4
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×2
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×8
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×7
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×2
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Light Bluish Gray Part 35480 Element 6248890 ×6
  • Plate Special 1 x 2 with Pin Hole Underneath Light Bluish Gray Part 18677 Element 6168633 or 6089147 ×4
  • Plate Special 1 x 2 with Pin Hole on Top Light Bluish Gray Part 11458 Element 6225230 ×4
  • Plate Special 1 x 2, Top Clip [Open O] Light Bluish Gray Part 44861 Element 6326078 ×2
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 34103 Element 6211969 ×2
  • Plate Special 1 x 4 with Towball Socket, Flattened Light Bluish Gray Part 98263 Element 6273218 or 4667166 ×2
  • Plate Special 2 x 2 with Towball Socket, Short, Flattened with Holes and Axle Hole in Center Light Bluish Gray Part 63082 Element 6273227 or 4530469 ×2
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Light Bluish Gray Part 4304 Element 6469440 ×4
  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×4
  • Technic Brick 1 x 1 with Pin Hole Light Bluish Gray Part 6541 Element 4211535 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Light Bluish Gray Part 32064a Element 6206249 or 4233493 ×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 ×1
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 1 spare in the box ×5
  • Tile 1 x 3 Light Bluish Gray Part 63864 Element 4558169 ×3
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×5
  • Tile 2 x 2 Corner Light Bluish Gray Part 14719 Element 6065824 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×3
  • Tile 2 x 3 Light Bluish Gray Part 26603 Element 6171894 ×4
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×2
  • Tile 2 x 6 Light Bluish Gray Part 69729 Element 6318584 ×2
  • Tile 45° Cut 2 x 2 (Triangle) Light Bluish Gray Part 35787 Element 6217876 ×2
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Light Bluish Gray Part 99563 Element 6134378 or 6034045 ×4
  • Tile Special 2 x 2 Inverted Light Bluish Gray Part 11203 Element 6132886 ×3
  • Tile Special Round 2 x 2 with Hole Light Bluish Gray Part 15535 Element 6179186 ×4
  • Wedge Plate 3 x 3 Cut Corner Light Bluish Gray Part 2450 Element 4211361 ×2
  • Wedge Plate 4 x 4 Cut Corner Light Bluish Gray Part 30503 Element 4160560 ×2
  • Wedge Plate 6 x 4 Left Light Bluish Gray Part 48208 Element 6262083 ×1
  • Wedge Plate 6 x 4 Right Light Bluish Gray Part 48205 Element 6262082 ×1

Dark Bluish Gray 83 pieces

  • Bracket 3 x 2 x 1 1/3 with Bottom Stud Holder Dark Bluish Gray Part 73562 Element 6395363 ×2
  • Brick 1 x 4 Dark Bluish Gray Part 3010 Element 4211103 ×3
  • Brick Round 2 x 2 with Axle Hole Dark Bluish Gray Part 3941 Element 4249139 Also in Black ×12
  • Brick Sloped 45° 2 x 2 Dark Bluish Gray Part 3039 Element 4211054 ×1
  • Launcher, Brick Special 1 x 4 Spring Shooter with Light Bluish Gray Top Dark Bluish Gray Part 15400 Element 6324200 or 6048898 ×2
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×4
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×8
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×6
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×1
  • Plate 4 x 4 Dark Bluish Gray Part 3031 Element 4243831 or 4211089 ×1
  • Plate 4 x 6 Dark Bluish Gray Part 3032 Element 4211115 or 3032199 ×1
  • Plate Special / Shield Rectangular with 4 Studs, Handle Dark Bluish Gray Part 30166 Element 6258991 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Dark Bluish Gray Part 35480 Element 6221607 ×4
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×8
  • Technic Driving Ring Extension, 8 Ridges Dark Bluish Gray Part 35186 Element 6484624 ×4
  • Technic Pin Connector Round 1L [Beam] Dark Bluish Gray Part 18654 Element 6100030 1 spare in the box ×4
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×4
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 ×2
  • Tile 2 x 2 Curved, Macaroni Dark Bluish Gray Part 27925 Element 6265306 ×4
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×9
  • Weapon Gun / Pistol Two Barrel, 8 Ribs Dark Bluish Gray Part 6018 Element 6534688 ×1

Black 61 pieces

  • Bar 2L with Stop in Center Black Part 78258 Element 6371584 1 spare in the box ×2
  • Bracket 1 x 1 - 1 x 2 Black Part 79389 Element 6380236 ×2
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 Also in Dark Bluish Gray ×4
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, without Groove Black Part 44567b Element 6266244 ×2
  • Plate 2 x 16 Black Part 4282 Element 428276 or 428226 ×2
  • Plate 2 x 8 Black Part 3034 Element 303426 ×5
  • Plate 4 x 10 Black Part 3030 Element 303076 or 303026 ×2
  • Plate Round 4 x 4 with Pin Hole Black Part 60474 Element 4515350 ×4
  • Plate Special 1 x 2 with Pin Hole Underneath Black Part 18677 Element 6192309 or 6167497 ×2
  • Plate Special Round 1 x 2 Half Circle with Stud (Jumper) Black Part 1745 Element 6510061 or 6438919 ×2
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Black Part 18674 Element 6195325 ×4
  • Technic Axle 12 Black Part 3708 Element 370826 ×4
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Black Part 65304 Element 6321745 ×2
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×16
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×1
  • Weapon Gun / Blaster Short (Star Wars) Black Part 58247 Element 4498713 ×2
  • Weapon Gun / Blaster Small (Star Wars) Black Part 92738 Element 6360207 or 4609050 1 spare in the box ×1

Blue 28 pieces

  • Brick Curved 4 x 2 No Studs Blue Part 93606 Element 6429287 or 6173943 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Blue Part 54200 Element 4504380 or 4296154 1 spare in the box ×2
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×9
  • Plate 2 x 2 Corner Blue Part 2420 Element 242073 or 242023 ×4
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 1 spare in the box ×2
  • Plate Round 4 x 4 with Pin Hole Blue Part 60474 Element 4581501 ×4
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×1
  • Tile 1 x 3 Blue Part 63864 Element 4587840 ×2
  • Tile 1 x 8 with Groove Blue Part 4162 Element 416223 ×2

Tan 21 pieces

  • Bracket 1 x 2 - 1 x 2 Tan Part 99781 Element 6249809 or 6092684 ×4
  • Bracket 1 x 2 - 2 x 2 Tan Part 44728 Element 6117975 or 6048857 ×8
  • Brick Curved Inverted 2 x 2 x 2/3 Tan Part 32803 Element 6517736 ×1
  • Plate 1 x 6 Tan Part 3666 Element 4124067 or 366605 ×2
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 1 spare in the box ×6

Yellow 11 pieces

  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×4
  • Tile 2 x 4 with Groove Yellow Part 87079 Element 6388490 or 4560181 ×1

Trans-Clear 10 pieces

  • Panel 1 x 2 x 1 [Rounded Corners] Trans-Clear Part 4865b Element 6514121 or 6246888 Also in White ×4
  • Panel 1 x 4 x 3 [Side Supports / Hollow Studs] Trans-Clear Part 60581 Element 6514156 or 6344088 ×1
  • Tile 1 x 2 with Groove Trans-Clear Part 3069b Element 6514223 or 6251294 ×4
  • Windscreen 8 x 4 x 2 with Handle and 2 Studs with Silver Cockpit Print Trans-Clear Part 21849pr0005 Element 6576508 ×1

Reddish Brown 9 pieces

  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×1
  • Brick Curved 2 x 2 x 2/3 Reddish Brown Part 15068 Element 6146858 ×1
  • Plate 1 x 3 Reddish Brown Part 3623 Element 4211152 ×2
  • Plate 1 x 6 Reddish Brown Part 3666 Element 4221590 ×1
  • Plate Special 2 x 2 with Only 2 studs Reddish Brown Part 33909 Element 6196221 ×3
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Reddish Brown Part 99563 Element 6261744 ×1

Trans-Red 9 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×6
  • Projectile, Spring Shooter Ammunition 8L Bar Trans-Red Part 15303 Element 6287550 or 6054526 ×3

Bright Light Yellow 7 pieces

  • Brick Sloped 30° 1 x 2 x 2/3 Bright Light Yellow Part 85984 Element 6554801 or 6296510 ×1
  • Tile 1 x 1 with Groove Bright Light Yellow Part 3070b Element 6275877 1 spare in the box ×3
  • Tile 1 x 2 with Groove Bright Light Yellow Part 3069b Element 6554794 or 6061201 ×3

Red 4 pieces

  • Plate 1 x 4 Red Part 3710 Element 371021 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Red Part 35480 Element 6210269 ×3

Trans-Light Blue 4 pieces

  • Cone 1 x 1 [Top Groove] Trans-Light Blue Part 59900 Element 6514027 or 6337639 ×4

Green 2 pieces

  • Tile Round 1 x 1 Green Part 98138 Element 6396247 or 6009458 1 spare in the box ×2

Dark Tan 1 piece

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1

Orange 1 piece

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 75399-1 [No Color/Any Color] Part 10112220 Element 6536367 ×1

Minifigures 4 figures

  • K-2SO Minifigure, checked as a whole figure ×1
  • Cassian Andor, Warm Tan Head Minifigure, checked as a whole figure ×1
  • Dedra Meero Minifigure, checked as a whole figure ×1
  • ISB Tactical Agent 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.