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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.

Surface Space Loader

Checking

42178 Surface Space Loader

435 pieces in 100 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.

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Piece checklist

Technic Pins 146 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×10
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 2 spares in the box ×59
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×17
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×33
  • Technic Pin 1/2 with Anti-Stud Bright Green Part 65826 Element 6301284 1 spare in the box ×1
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Light Bluish Gray Part 65304 Element 6321747 ×4
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×3
  • Technic Pin 1/2 with Friction Red Part 89678 Element 6378120 1 spare in the box ×14
  • Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole Red Part 66906 Element 6360104 ×3
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2

Technic Connectors 91 pieces

  • Technic Axle and Pin Connector Perpendicular Triple Black Part 63869 Element 6362991 or 6007966 ×10
  • Technic Pin Connector Hub Perpendicular 3L with 2 Pins Black Part 2393 Element 6477712 ×3
  • Technic Pin Connector Hub with 1 Axle Black Part 22961 Element 6253260 ×7
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×2
  • Technic Axle and Pin Connector Angled #2 - 180° Dark Bluish Gray Part 32034 Element 32034199 or 6271876 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Bluish Gray Part 6553 Element 4211536 ×3
  • Technic Axle and Pin Connector Perpendicular Light Bluish Gray Part 6536 Element 6261375 or 4211775 ×10
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Light Bluish Gray Part 42195 Element 6273212 ×3
  • Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Along Part) Light Bluish Gray Part 49130 Element 6313453 ×2
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes) Light Bluish Gray Part 65489 Element 6282158 ×5
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Light Bluish Gray Part 65487 Element 6282142 ×9
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Light Bluish Gray Part 44874 Element 6321303 ×2
  • Technic Pin Connector Round 1L [Beam] Light Bluish Gray Part 18654 Element 6183784 2 spares in the box ×8
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Red Part 42195 Element 6273211 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] White Part 59443 Element 6212049 ×5
  • Technic Axle and Pin Connector Angled #1 White Part 32013 Element 6332573 or 4118981 ×8
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole White Part 32184 Element 6276981 or 6114940 ×7
  • Technic Pin Connector Hub with 2 Axles White Part 27940 Element 6257450 ×2

Technic Beams 67 pieces

  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×6
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×5
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×9
  • Technic Beam 3 x 3 T-Shape Thick Black Part 60484 Element 4552347 or 4535771 ×3
  • Technic Connector Beam 3 x 3 Black Part 39793 Element 6265644 ×1
  • Technic Beam 1 x 9 Thick Dark Bluish Gray Part 40490 Element 4645730 or 4210757 ×5
  • Technic Beam 1 x 4 Thin with Stud Connector Light Bluish Gray Part 2825 Element 6331574 or 4211561 ×2
  • Technic Beam 3 x 5 L-Shape Thick Light Bluish Gray Part 32526 Element 4211713 ×10
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×1
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole White Part 60483 Element 6265135 or 6177268 ×5
  • Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×2
  • Technic Beam 1 x 7 Bent (4 - 4) Thick White Part 32348 Element 6278132 or 4509912 ×6
  • Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick White Part 71708 Element 6345327 ×5
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×5

Technic Axles 39 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×6
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×7
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×6
  • Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×4
  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×2
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×3
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×6
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×5

Technic Bushes 16 pieces

  • Technic Bush Red Part 3713 Element 6271820 or 4227155 2 spares in the box ×11
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×5

Technic Panels 15 pieces

  • Technic Panel Curved and Bent 6 x 3 Blue Part 24116 Element 6268009 or 6133684 ×1
  • Technic Panel Curved and Bent 6 x 3 Reddish Orange Part 24116 Element 6476621 ×6
  • Technic Panel Fairing #10 Medium Triangle Smooth Reddish Orange Part 2403 Element 6510091 or 6472388 ×1
  • Technic Panel Fairing #9 Medium Triangle Smooth Reddish Orange Part 2395 Element 6510085 or 6472387 ×1
  • Technic Panel Curved 5 x 7 Parallelogram Left White Part 80267 Element 6394077 ×1
  • Technic Panel Curved 5 x 7 Parallelogram Right White Part 80268 Element 6394079 ×1
  • Technic Panel Fairing # 3 Small Smooth Long, Side A White Part 64683 Element 4547581 ×1
  • Technic Panel Fairing # 4 Small Smooth Long, Side B White Part 64391 Element 4547582 ×1
  • Technic Panel Fairing #21 5L Small Smooth, Side B White Part 11946 Element 6330084 or 6114580 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A White Part 11947 Element 6343987 or 6114583 ×1

Wheels and Tyres 8 pieces

  • Tyre 56 x 26 Tractor Light Bluish Gray Part 70695 Element 6471479 ×4
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Light Bluish Gray Part 56145 Element 4297210 ×4

Large Buildable Figures 6 pieces

  • Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes White Part 98585 Element 6263181 ×6

Plates Round Curved and Dishes 5 pieces

  • Dish 2 x 2 Inverted [Radar] Light Bluish Gray Part 4740 Element 4211512 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box ×4

Technic Beams Special 4 pieces

  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Black Part 14720 Element 6390379 ×2
  • Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole] Dark Bluish Gray Part 3167 Element 6475314 ×1
  • Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Light Bluish Gray Part 64179 Element 4539880 ×1

Technic Gears 4 pieces

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×1
  • Technic Gear 20 Tooth with Axle Hole [+ Opening] Dark Azure Part 69779 Element 6396480 ×1
  • Technic Knob Wheel 45° Offset Light Bluish Gray Part 5405 Element 6469530 ×1
  • Technic Knob Wheel Yellow Part 32072 Element 6284189 or 4203493 ×1

Tiles 4 pieces

  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×3
  • Tile 2 x 3 White Part 26603 Element 6552162 or 6550161 ×1

Bars, Ladders and Fences 3 pieces

  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 1 spare in the box ×1
  • Bar 1 x 3 (Radio Handle, Phone Handset) Dark Bluish Gray Part 6190 Element 4210676 ×1
  • Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] Light Bluish Gray Part 3484 Element 6439041 ×1

Bricks Round and Cones 3 pieces

  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×1
  • Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation Light Bluish Gray Part 30361c Element 6310181 ×2

Plates 3 pieces

  • Plate 2 x 3 Black Part 3021 Element 302126 ×3

Technic Special 3 pieces

  • Technic Disc 3 x 3 Light Bluish Gray Part 2723 Element 4667578 ×2
  • Technic Linear Actuator Mini with Dark Bluish Gray Head and Orange Axle Light Bluish Gray Part 92693 Element 6221464 or 4612100 ×1

Bricks Curved 2 pieces

  • Brick Curved Inverted 2 x 2 with 1 x 2 Cutouts Dark Bluish Gray Part 1750 Element 6445057 ×2

Bricks Sloped 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Blue Part 54200 Element 4504380 or 4296154 1 spare in the box ×2

Bricks Special 2 pieces

  • Brick Special 1 x 6 x 4 with 4 Pin Holes and Opening Reddish Orange Part 49699 Element 6468285 ×2

Plates Special 2 pieces

  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×1

Technic Bricks 2 pieces

  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×2

Technic Steering, Suspension and Engine 2 pieces

  • Technic Steering Wheel Pilot's Yoke [Closed Top] Dark Bluish Gray Part 49151 Element 6431478 ×1
  • Technic Universal Joint 3L [Complete Assembly] Light Bluish Gray Part 61903 Element 6335279 or 6321309 ×1

Tiles Round and Curved 2 pieces

  • Tile Round 2 x 2 with Bottom Stud Holder Black Part 14769 Element 6070695 ×1
  • Tile Round 1 x 1 with Bacteria Print Trans-Clear Part 98138pr0197 Element 6532090 or 6384069 1 spare in the box ×1

Minifig Accessories 1 piece

  • Equipment Metal Detector, no Stud on Search Head Black Part 93106 Element 6168638 or 4637372 ×1

Plants & Trees 1 piece

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Lime Part 24866 Element 6209692 1 spare in the box ×1

Stickers 1 piece

  • Sticker Sheet for Set 42178-1 [No Color/Any Color] Part 10105334 Element 6462847 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 10 x 6 x 3 Bubble Canopy Double Tapered with Square Front Cutout Trans-Black Part 10312 Element 6514105 or 6474470 ×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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