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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.

Mag Wheel Master

Checking

8417 Mag Wheel Master

315 pieces in 89 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

Black 199 pieces

  • Brick Wedged 3 x 4 [No Stud Notches] Black Part 2399 Element 4189285 or 239926 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Black Part 4276b Element 4264363 or 4256402 ×2
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Black Part 4275b Element 427526 ×2
  • Hose, Ribbed 7mm D. 13L / 10.4cm Black Part 78c13 Element 4189289 or 4111943 ×2
  • Hose, Ribbed 7mm D. 15L / 12.0cm Black Part 78c15 Element 4297950 or 4189297 ×1
  • Hose, Ribbed 7mm D. 6L / 4.8cm Black Part 78c06 Element 6439886 or 6345089 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×7
  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Black Part 4081b Element 6281993 or 4632571 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×11
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×10
  • Technic Axle 4 Black Part 3705 Element 370526 ×12
  • Technic Axle 5 Black Part 32073 Element 4114740 ×4
  • Technic Axle 6 Black Part 3706 Element 370626 ×8
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×1
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×5
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×4
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×2
  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×2
  • Technic Axle and Pin Connector Angled #6 - 90° Black Part 32014 Element 6268905 or 4107767 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×21
  • Technic Axle and Pin Connector Perpendicular 3L with Pin Hole Black Part 32068 Element 6273318 or 4114670 ×3
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×17
  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×4
  • Technic Beam 1 x 5 Thin Black Part 32017 Element 6114935 or 4503423 ×4
  • Technic Beam 1 x 7 Thin Black Part 32065 Element 6271573 or 6253293 ×2
  • Technic Beam 1 x 9 Offset Crossover Black Part 32079 Element 4189302 or 4111987 ×1
  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×2
  • Technic Link Black Part 3711a Element 371126 1 spare in the box ×25
  • Technic Motorcycle Pivot Black Part 2904 Element 6181757 or 4543263 ×1
  • Technic Pin Connector Round [No Slot] Black Part 75535 Element 75619 ×3
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×16
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×2
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×1
  • Tyre 14 x 9 Smooth Small Wide Slick Black Part 30028 Element 4508215 or 3002826 ×3
  • Tyre 70 x 14 Futuristic Black Part 32076 Element 4112878 ×1
  • Tyre 70 x 28 Futuristic Black Part 32078 Element 4112879 ×1

Light Gray 57 pieces

  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Gray Part 6538b Element 4113804 or 4100408 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×9
  • Technic Beam 1 x 3 Thin Light Gray Part 6632 Element 4107825 ×2
  • Technic Beam 1 x 5 Thin Light Gray Part 32017 Element 4106885 ×2
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 1 spare in the box ×8
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a 1 spare in the box ×15
  • Technic Engine Connecting Rod Light Gray Part 2852 Element 285202 ×2
  • Technic Engine Crankshaft Light Gray Part 2853 Element 4119475 or 285302 ×4
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×2
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Gray Part 3650c Element 365002 ×2
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×1
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 1 spare in the box ×1
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×6
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×2

Blue 30 pieces

  • Hose Rigid 3mm D. 17L / 13.6cm Blue Part 75c17 Element 4190666 or 4116884 ×1
  • Hose Rigid 3mm D. 30L / 24.0cm Blue Part 75c30 Element 4190670 or 4125448 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×1
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×2
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×1
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×2
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×1
  • Technic Axle and Pin Connector Perpendicular Blue Part 6536 Element 6261383 or 6178359 ×3
  • Technic Beam 1 x 6 Thin Blue Part 32063 Element 4160897 or 4114673 ×6
  • Technic Beam Triangle Thin [Type I] Blue Part 2905 Element 4254627 or 4142541 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] Blue Part 32000 Element 4189299 or 4112071 ×1
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Blue Part 32054 Element 4140800 or 4107741 ×2
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×2
  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Blue Part 2412b Element 241223 ×2
  • Wedge Plate 3 x 4 without Stud Notches Blue Part 4859 ×1

Dark Turquoise 7 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Dark Turquoise Part 2412b Element 4112297 ×7

White 6 pieces

  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Pin Hole White Part 32068 Element 4167337 or 4112072 ×1
  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×2
  • Technic Beam 3 x 3 L-Shape Thin White Part 32056 Element 4112174 ×2

Dark Gray 5 pieces

  • Technic Gear 16 Tooth with Clutch [Toothed] Dark Gray Part 6542a Element 654277 or 654227 ×2
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 1 spare in the box ×2
  • Technic Shock Absorber 6.5L with Soft Spring, Standard Coil [Complete Assembly] Dark Gray Part 76138 Element 4111956 ×1

Metallic Silver 2 pieces

  • Wheel 70 x 14 mm Futuristic Metallic Silver Part 32057 Element 4112876 ×1
  • Wheel 70 x 28 mm Futuristic Metallic Silver Part 32077 Element 4119223 ×1

Trans-Clear 2 pieces

  • Technic Engine Cylinder with Side Slots Trans-Clear Part 2850a Element 4109610 ×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

Trans-Yellow 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×2

Yellow 2 pieces

  • Technic Engine Piston Round Yellow Part 2851 Element 4112203 or 285124 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 8417-1, 8430-1 [No Color/Any Color] Part 71825 Element 4114355 ×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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