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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.

4WD X-Track

Checking

8279 4WD X-Track

449 pieces in 88 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 110 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×4
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×21
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×43
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Blue Part 32054 Element 4140800 or 4107741 ×14
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 ×5
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×21

Technic Axles 78 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×8
  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×20
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×14
  • Technic Axle 4 Black Part 3705 Element 370526 ×17
  • Technic Axle 5 Black Part 32073 Element 4114740 ×3
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×3
  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×6
  • Technic Axle 5.5 with Stop [Flat Short End] White Part 32209 Element 4120471 ×3

Technic Connectors 67 pieces

  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 ×7
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×12
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×10
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×6
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×10
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 ×8
  • Technic Axle and Pin Connector Perpendicular 3L with Pin Hole Black Part 32068 Element 6273318 or 4114670 ×2
  • Technic Block 3 x 5 x 1 2/3 Black Part 32310 Element 4141815 or 4140427 ×1
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Black Part 32175 Element 4287635 or 4249261 ×2
  • Technic Pin Connector Round [No Slot] Black Part 75535 Element 75619 ×1
  • Technic Axle and Pin Connector Angled #5 - 112.5° Light Gray Part 32015 Element 4106378 ×1
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Red Part 32174 Element 4119331 ×1
  • Technic Axle and Pin Connector Angled #4 - 135° Red Part 32192 Element 6262898 or 4271646 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Pin Hole Red Part 32068 Element 4114742 ×2
  • Technic Axle and Pin Connector Perpendicular Double Red Part 32291 Element 6280393 or 4241474 ×1
  • Technic Block 3 x 5 x 1 2/3 Red Part 32310 Element 4140424 ×1

Technic Beams 61 pieces

  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×8
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×14
  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×1
  • Technic Beam 1 x 5 Thin Black Part 32017 Element 6114935 or 4503423 ×2
  • Technic Beam 1 x 7 Thin Black Part 32065 Element 6271573 or 6253293 ×1
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Black Part 32271 Element 6276835 or 4140327 ×4
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×7
  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Black Part 32249 Element 6336619 or 4505842 ×4
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Black Part 32250 Element 6327162 or 4128557 ×2
  • Technic Beam 5 x 7 L-Shape with Quarter Ellipse Thin Black Part 32251 Element 4240081 or 4141517 ×2
  • Technic Beam 1 x 3 Thin Red Part 6632 Element 6364451 or 4107824 ×4
  • Technic Beam 1 x 4 Thin Red Part 32449 Element 6330205 or 4141811 ×4
  • Technic Beam 1 x 5 Thick Red Part 32316 Element 4142132 or 4128589 ×4
  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Red Part 32249 Element 6403900 or 4566064 ×2

Technic Bushes 32 pieces

  • Technic Bush Blue Part 3713 Element 4189350 or 4188142 ×4
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×15
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×13

Technic Bricks 28 pieces

  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×3
  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×1
  • Technic Brick 1 x 14 [13 Pin Holes] Black Part 32018 Element 4107558 ×10
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×6
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Ridges Black Part 32064c ×1
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×1
  • Technic Pin Connector Block 1 x 5 x 3 Black Part 32333 Element 6271358 or 4141810 ×2
  • Technic Brick 4 x 4 with 2 x 2 Opening Light Gray Part 32324 Element 4141499 ×4

Plates 16 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 1 x 8 Black Part 3460 Element 346026 ×8

Tubes and Hoses 14 pieces

  • Axle Hose, Soft 12L Pearl Light Gray Part 32200 Element 4141969 ×2
  • Axle Hose, Soft 19L Pearl Light Gray Part 32235 Element 4141970 ×2
  • Hose, Ribbed 7mm D. 3L / 2.4cm Pearl Light Gray Part 78c03 Element 4495199 or 4275333 ×4
  • Hose, Ribbed 7mm D. 7L / 5.6cm Pearl Light Gray Part 78c07 Element 4495203 or 4141522 ×6

Wheels and Tyres 12 pieces

  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×2
  • Tyre 56 x 30 R Balloon Black Part 32180 Element 4119020 ×4
  • Wheel 49.6 x 28 VR with X Axle Hole Metallic Silver Part 22253 Element 4173171 ×4
  • Technic Wedge Belt Wheel [aka Pulley] Red Part 4185 Element 6532101 or 4240279 ×2

Technic Gears 8 pieces

  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Blue Part 3648b Element 4120110 ×1
  • Technic Gear 16 Tooth with Round Holes [Old Style] Red Part 4019 Element 4189405 or 4141812 ×2
  • Technic Gear 8 Tooth White Part 3647 Element 4140436 ×1
  • Technic Gear 12 Tooth Bevel Yellow Part 6589 Element 4226847 or 4141806 ×4

Technic Panels 6 pieces

  • Technic Panel Fairing # 1 Large Short, Large Holes, Side A Red Part 32190 Element 4235709 or 4125181 ×2
  • Technic Panel Fairing # 2 Large Short, Large Holes, Side B Red Part 32191 Element 4235710 or 4125182 ×2
  • Technic Panel Fairing # 3 Large Long, Large Holes, Side A Red Part 32188 Element 4234436 or 4125179 ×1
  • Technic Panel Fairing # 4 Large Long, Large Holes, Side B Red Part 32189 Element 4234437 or 4125180 ×1

Tiles 5 pieces

  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×3
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×2

Plates Special 4 pieces

  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×4

Technic Steering, Suspension and Engine 4 pieces

  • Technic Engine Cylinder with Side Slots Trans-Clear Part 2850a Element 4109610 ×4

String, Bands and Reels 2 pieces

  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×1
  • Rubber Band Small 13mm (Square Cross Section) Black Part 71509 Element 4141606 or 4107153 ×1

Electronics 1 piece

  • Motor, 4.5V 17 x 6 x 5 with Switch, Light Gray Bottom Black Part 32288c02 Element 4141599 ×1

Stickers 1 piece

  • Sticker Sheet for Set 8279-1 [No Color/Any Color] Part 23058 Element 4141996 ×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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