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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.

Bugatti Bolide

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42151 Bugatti Bolide

905 pieces in 150 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.

2 more look-alike pairs
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Black ×1 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
  • Technic Pin Connector Hub with 1 Axle Black ×4 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
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Piece checklist

Black 536 pieces

  • Axle Hose, Soft 7L Black Part 32580 Element 6132744 ×3
  • Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Black Part 48729b Element 6278152 or 6037347 1 spare in the box ×2
  • Bar 3L Black Part 87994 Element 6185316 or 6093525 1 spare in the box ×4
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Black Part 11477 Element 6047276 ×1
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Black Part 11153 Element 6580394 or 6037746 ×5
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box ×1
  • Hose Rigid 3mm D. 5L / 4.0cm Black Part 75c05 Element 6432743 1 spare in the box ×2
  • Panel 1 x 2 x 1 [Rounded Corners] Black Part 4865b Element 6146220 ×4
  • Plate 1 x 1 Black Part 3024 Element 302426 1 spare in the box ×2
  • Plate 1 x 1 x 2/3 with Open Stud Black Part 86996 Element 6388352 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×5
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 2 x 12 Black Part 2445 Element 244526 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Black Part 15573 Element 6092585 ×3
  • Plate Special 1 x 2 with Pin Hole Underneath Black Part 18677 Element 6192309 or 6167497 ×4
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×25
  • Technic Axle 4 Black Part 3705 Element 370526 ×7
  • Technic Axle 6 Black Part 3706 Element 370626 ×3
  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×2
  • Technic Axle Connector with Axle Hole [Reinforced] Black Part 42135 Element 6331716 ×4
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×14
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×8
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×9
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×3
  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×6
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×24
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×4
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 Also in Dark Bluish Gray ×3
  • Technic Axle and Pin Connector Perpendicular Double Black Part 32291 Element 6280394 or 4140430 ×5
  • Technic Axle and Pin Connector Perpendicular Double Split [Reinforced] Black Part 69819 Element 6349281 ×5
  • Technic Axle and Pin Connector Perpendicular Triple Black Part 63869 Element 6362991 or 6007966 ×4
  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 Also in Dark Bluish Gray ×1
  • Technic Beam 1 x 13 Thick Black Part 41239 Element 4522933 or 4164422 ×2
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×1
  • Technic Beam 1 x 2 Thick Black Part 43857 Element 4385726 or 4177444 ×4
  • 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 ×38
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 Also in Dark Bluish Gray ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×16
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 Also in Dark Bluish Gray ×2
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 Also in Dark Bluish Gray ×5
  • Technic Beam 1 x 6 Thin Black Part 32063 Element 6163980 or 4114634 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×7
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×4
  • Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick Black Part 71708 Element 6326047 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 Also in Dark Bluish Gray ×6
  • Technic Beam 3 x 3 T-Shape Thick Black Part 60484 Element 4552347 or 4535771 ×1
  • Technic Beam 3 x 5 L-Shape Thick Black Part 32526 Element 4142823 or 3252626 ×4
  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×4
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Black Part 42195 Element 6286381 Also in Dark Bluish Gray ×1
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×3
  • Technic Gear Rack 1 x 7 with Axle and Pin Holes Black Part 87761 Element 6327430 or 4562009 ×1
  • Technic Panel Car Mudguard Arched 9 x 2 x 3, Arched Top #42 with Yellow Paint, White X Print Black Part 2459pr0001 Element 6426357 ×1
  • Technic Panel Car Mudguard Arched 9 x 2 x 3, Arched Top #42 with Yellow Paint, White X Print Black Part 2459pr0002 Element 6426358 ×1
  • Technic Panel Fairing #10 Medium Triangle Smooth Black Part 2403 Element 6510087 or 6426604 ×6
  • Technic Panel Fairing #21 5L Small Smooth, Side B Black Part 11946 Element 6316923 or 6023036 ×4
  • Technic Panel Fairing #22 5L Small Smooth, Side A Black Part 11947 Element 6319983 or 6022761 ×4
  • Technic Panel Fairing #5 Long Smooth, Side A Black Part 64681 Element 4558774 ×1
  • Technic Panel Fairing #6 Long Smooth, Side B Black Part 64393 Element 4558731 ×1
  • Technic Panel Fairing #7 3L Very Small Smooth, Side A Black Part 2387 Element 6510991 or 6426589 ×6
  • Technic Panel Fairing #8 3L Very Small Smooth, Side B Black Part 2389 Element 6513874 or 6426590 ×6
  • Technic Panel Fairing #9 Medium Triangle Smooth Black Part 2395 Element 6510081 or 6426603 ×6
  • Technic Panel Fairing 2 x 1 x 1 Black Part 89679 Element 6396456 ×4
  • Technic Panel Fairing 2 x 1 x 1 with Bugatti Logo Print Black Part 89679pr0003 Element 6426356 ×1
  • Technic Panel Fairing 2 x 3 x 1 Black Part 71682 Element 6331026 ×2
  • Technic Panel Fairing 2 x 3 x 1 #3 Angled 157.5° Black Part 2457 Element 6510092 or 6408176 ×5
  • Technic Panel Triangle 5 x 4 Left Black Part 80278 Element 6400130 ×1
  • Technic Panel Triangle 5 x 4 Right Black Part 80274 Element 6400129 ×1
  • Technic Pin Connector Hub with 1 Axle Black Part 22961 Element 6253260 Also in Dark Bluish Gray ×4
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Black Part 65487 Element 6282140 ×23
  • Technic Pin Connector Hub with 2 Perpendicular Axles Black Part 10197 Element 6099801 or 6098801 ×10
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Black Part 44874 Element 6366229 ×2
  • Technic Pin Connector Round 1L [Beam] Black Part 18654 Element 6121485 2 spares in the box ×18
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×4
  • Technic Pin Connector Toggle Joint Smooth Double with 2 Pins [Square Holes] Black Part 65746 Element 6328175 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Black Part 65304 Element 6321745 ×8
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 2 spares in the box ×115
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×1
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×3
  • Tile 1 x 3 Black Part 63864 Element 4558170 ×4
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×4
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×3
  • Tile Round 1 x 1 Black Part 98138 Element 6284070 or 6139403 1 spare in the box ×4
  • Tyre 43.2 x 14 Black Part 30699 Element 6518575 or 6182551 ×2
  • Tyre 43.2 x 22 ZR Black Part 44309 Element 4184286 ×2
  • Wedge Plate 3 x 2 Left Black Part 43723 Element 4180536 ×1
  • Wedge Plate 3 x 2 Right Black Part 43722 Element 4180508 ×1

Light Bluish Gray 95 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×11
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×5
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×2
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×4
  • Technic Axle and Pin Connector Angled #2 - 180° Light Bluish Gray Part 32034 Element 6346487 or 4211567 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Light Bluish Gray Part 42003 Element 6273724 or 4211779 ×9
  • Technic Beam 1 x 15 Thick Light Bluish Gray Part 32278 Element 4542577 or 4211770 ×4
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Light Bluish Gray Part 60483 Element 6265089 or 6004888 ×2
  • Technic Beam 1 x 9 Thick Light Bluish Gray Part 40490 Element 6102449 or 4211866 ×3
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×9
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 2 spares in the box ×36
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes) Light Bluish Gray Part 65489 Element 6282158 ×2
  • Technic Pin Connector Hub with 1 Axle Light Bluish Gray Part 22961 Element 6123815 ×2
  • Technic Pin Connector Perpendicular Long Light Bluish Gray Part 32557 Element 4211714 ×4

Red 93 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×27
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×12
  • Technic Pin 1/2 with 2L Bar Extension Red Part 61184 Element 6350694 or 4526119 ×7
  • Technic Pin 1/2 with Friction Red Part 89678 Element 6378120 2 spares in the box ×47

Blue 60 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×21
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×39

Yellow 46 pieces

  • Technic Axle 11 Yellow Part 23948 Element 6130012 ×1
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×2
  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×1
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Yellow Part 59443 Element 4519010 ×2
  • Technic Axle and Pin Connector Angled #3 - 157.5° Yellow Part 32016 Element 6430834 or 4285186 ×2
  • Technic Beam 1 x 2 Thick Yellow Part 43857 Element 4187122 ×2
  • Technic Beam 1 x 2 Thin Yellow Part 41677 Element 6431477 ×8
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×1
  • Technic Beam 1 x 4 Thin Yellow Part 32449 Element 6327559 or 4199345 ×2
  • Technic Beam 1 x 9 Thick Yellow Part 40490 Element 6115616 or 4187136 ×1
  • Technic Beam 3 x 5 L-Shape Thick Yellow Part 32526 Element 4144022 ×2
  • Technic Panel Fairing #21 5L Small Smooth, Side B Yellow Part 11946 Element 6352653 or 6251190 ×3
  • Technic Panel Fairing #22 5L Small Smooth, Side A Yellow Part 11947 Element 6352686 or 6251191 ×3
  • Technic Panel Fairing #7 3L Very Small Smooth, Side A Yellow Part 2387 Element 6510995 or 6430389 ×2
  • Technic Panel Fairing #8 3L Very Small Smooth, Side B Yellow Part 2389 Element 6513879 or 6430392 ×2
  • Technic Panel Fairing 2 x 1 x 1 Yellow Part 89679 Element 6431480 ×2
  • Technic Panel Fairing 2 x 3 x 1 Yellow Part 71682 Element 6334491 ×1
  • Technic Panel Fairing 2 x 3 x 1 #3 Angled 157.5° Yellow Part 2457 Element 6510094 or 6431151 ×2
  • Technic Wishbone Suspension Arm 9L Yellow Part 32294 Element 6523010 or 6430542 ×2
  • Wheel 30 x 14 Yellow Part 56904 Element 6431479 or 6064711 ×2
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Yellow Part 56145 Element 6286380 or 4490139 ×2

Dark Bluish Gray 43 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×3
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×2
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Dark Bluish Gray Part 32184 Element 32184199 or 6276984 Also in Black ×4
  • Technic Beam 1 x 11 Thick Dark Bluish Gray Part 32525 Element 4603472 or 4534914 Also in Black ×2
  • Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 Also in Black ×2
  • Technic Beam 1 x 4 Thin Dark Bluish Gray Part 32449 Element 6327561 or 4210749 Also in Black ×4
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 Also in Black ×2
  • Technic Beam 2 x 4 L-Shape Thick Dark Bluish Gray Part 32140 Element 6271830 or 4210667 Also in Black ×2
  • Technic Cam Dark Bluish Gray Part 6575 Element 6575199 or 4210759 ×4
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Dark Bluish Gray Part 42195 Element 6391550 Also in Black ×1
  • Technic Panel Curved and Bent 6 x 3 Dark Bluish Gray Part 24116 Element 6268008 or 6133243 ×2
  • Technic Pin 1/2 with Friction Dark Bluish Gray Part 89678 Element 6395635 1 spare in the box ×12
  • Technic Pin Connector Hub with 1 Axle Dark Bluish Gray Part 22961 Element 6135014 Also in Black ×1
  • Technic Steering Wheel Pilot's Yoke [Closed Top] Dark Bluish Gray Part 49151 Element 6431478 ×1

Reddish Brown 21 pieces

  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×21

Trans-Red 4 pieces

  • Bar 4L (Lightsaber Blade / Wand) Trans-Red Part 30374 Element 6507880 or 6167284 ×4

Tan 3 pieces

  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×3

Pearl Titanium 2 pieces

  • Technic Axle Connector 2 x 3 Quadruple Pearl Titanium Part 11272 Element 6251539 or 6022718 ×2

Dark Blue 1 piece

  • Tile Round 1 x 1 with Bugatti Logo Print Dark Blue Part 98138pr0039 Element 6315333 or 6219604 1 spare in the box ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42151-1 [No Color/Any Color] Part 10101053 Element 6415918 ×1

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

When a piece really is missing

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