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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.

Front End Loader

Checking

8439 Front End Loader

585 pieces in 127 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 211 pieces

  • Hose, Pneumatic 4mm D. 122L Black Part 5102c122 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×6
  • Technic Axle 10 Black Part 3737 Element 373726 ×3
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×9
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×13
  • Technic Axle 4 Black Part 3705 Element 370526 ×11
  • Technic Axle 6 Black Part 3706 Element 370626 ×15
  • Technic Axle 8 Black Part 3707 Element 370726 ×12
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×12
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×10
  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×4
  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×2
  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×2
  • Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×2
  • Technic Digger Bucket 10 x 18 Black Part 32030 Element 4622565 or 4537990 ×1
  • Technic Pin Connector Round [No Slot] Black Part 75535 Element 75619 ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×17
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×48
  • Technic Plate 1 x 4 with Toothed Ends Black Part 4263 Element 4251466 or 4225509 ×2
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×4
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×1
  • Tyre 68.8 x 40 Balloon Large Black Part 2995 Element 4251462 or 4156414 ×4

Light Bluish Gray 205 pieces

  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×1
  • Brick 1 x 2 x 2 with Inside Axle Holder Light Bluish Gray Part 3245b ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×9
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×1
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×1
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×4
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Bluish Gray Part 3794a ×2
  • Pneumatic Switch with Top Studs Light Bluish Gray Part 75215 Element 4251470 ×2
  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 ×4
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Bluish Gray Part 6553 Element 4211536 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Bluish Gray Part 6538b Element 4211543 ×3
  • Technic Axle Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3749 Element 6485968 or 4211808 ×12
  • Technic Axle and Pin Connector Angled #2 - 180° Light Bluish Gray Part 32034 Element 6346487 or 4211567 ×3
  • Technic Axle and Pin Connector Perpendicular Light Bluish Gray Part 6536 Element 6261375 or 4211775 ×16
  • Technic Beam 1 x 3 Thin Light Bluish Gray Part 6632 Element 6360043 or 4211566 ×9
  • Technic Beam 1 x 4 Thin with Stud Connector Light Bluish Gray Part 2825 Element 6331574 or 4211561 ×7
  • Technic Beam 1 x 5 Thin Light Bluish Gray Part 32017 Element 4503416 or 4211554 ×2
  • Technic Beam Triangle Thin [Type I] Light Bluish Gray Part 2905 Element 4211653 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×10
  • Technic Brick 1 x 4 [3 Pin Holes] Light Bluish Gray Part 3701 Element 4211441 ×3
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×12
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Bluish Gray Part 32123a 1 spare in the box ×46
  • Technic Changeover Catch - + opening Light Bluish Gray Part 6641 Element 4293878 or 4251455 ×2
  • Technic Engine Connecting Rod Light Bluish Gray Part 2852 Element 6000018 or 4655728 ×6
  • Technic Engine Crankshaft Light Bluish Gray Part 2853 Element 6640384 or 4211609 ×8
  • Technic Engine Cylinder with Side Slots Light Bluish Gray Part 2850a ×6
  • Technic Gear 12 Tooth Bevel Light Bluish Gray Part 6589 Element 6589194 or 4565450 ×7
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Bluish Gray Part 4019 Element 4562487 or 4211563 ×5
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Bluish Gray Part 3650c Element 4211434 ×2
  • Technic Gear 40 Tooth Light Bluish Gray Part 3649 Element 6195314 or 4285634 ×1
  • Technic Gear 8 Tooth Light Bluish Gray Part 3647 Element 4211432 or 3647194 ×4
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×2
  • Technic Plate 2 x 4 [3 Holes] Light Bluish Gray Part 3709 Element 4211444 ×1
  • Technic Plate 2 x 6 [5 Holes] Light Bluish Gray Part 32001 Element 4211542 ×1
  • Technic Steering Wheel Small (3 Studs Diameter) Light Bluish Gray Part 2819 Element 4580510 or 4211578 ×1
  • Technic Universal Joint 4L [Complete Assembly] Light Bluish Gray Part 9244 Element 9244194 or 4240416 ×1
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×2

Yellow 142 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Yellow Part 2436 Element 4282745 or 243624 ×1
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Yellow Part 6091 Element 6388492 or 6361082 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Yellow Part 3747b Element 4500459 or 374724 ×2
  • Brick Sloped Inverted 45° 2 x 1 Yellow Part 3665 Element 366524 ×4
  • Hinge Plate 1 x 2 with 3 Fingers On Side Yellow Part 2452 Element 4251458 or 4239014 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×10
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×6
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×7
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×1
  • Plate 2 x 2 Corner Yellow Part 2420 Element 242074 or 242024 ×4
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×10
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×12
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Yellow Part 4081b Element 6281992 or 4632569 ×2
  • Plate Special 1 x 6 with Train Wagon End Fence Yellow Part 6583 Element 6271645 or 4251468 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Yellow Part 2444 Element 244424 ×2
  • Plate Special 4 x 6, Studs on 3 Edges Yellow Part 6180 Element 6146753 or 4251467 ×1
  • Pneumatic Cylinder with 2 Inlets and Rounded End Medium (48mm) Yellow Part 47225 Element 4563144 or 4205293 ×3
  • Pneumatic Pump New Style with Black Top Yellow Part 2797c02 Element 4563134 or 74720 ×1
  • Technic Axle and Pin Connector Angled #1 Yellow Part 32013 Element 6329889 or 4107066 ×2
  • Technic Axle and Pin Connector Perpendicular Yellow Part 6536 Element 6261367 or 4173666 ×2
  • Technic Beam 1 x 11.5 Double Bent Thick Yellow Part 32009 Element 6271150 or 6257104 ×4
  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×6
  • Technic Beam 1 x 4 Thin with Stud Connector Yellow Part 2825 Element 4107135 or 282524 ×4
  • Technic Beam 1 x 5 Thin Yellow Part 32017 Element 4503425 or 4199343 ×3
  • Technic Beam Triangle Thin [Type I] Yellow Part 2905 Element 4296140 or 4251461 ×2
  • Technic Brick 1 x 10 [9 Pin Holes] Yellow Part 2730 Element 4251460 or 4225500 ×2
  • Technic Brick 1 x 16 [15 Pin Holes] Yellow Part 3703 Element 370324 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×8
  • Technic Brick 1 x 2 [2 Pin Holes] Yellow Part 32000 Element 4201615 or 4160860 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Yellow Part 3894 Element 389424 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Yellow Part 3702 Element 370224 ×4
  • Technic Pin Connector Round [No Slot] Yellow Part 75535 Element 75644 ×2
  • Technic Plate 2 x 4 [3 Holes] Yellow Part 3709 Element 370924 ×2
  • Technic Plate 2 x 6 [5 Holes] Yellow Part 32001 Element 6038194 or 4107750 ×3
  • Technic Slope Long 1 x 6 with 3 Pin Holes Yellow Part 2744 Element 4547043 or 4190417 ×2
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×2
  • Tile Round 2 x 2 with Bottom Cross Yellow Part 4150 Element 415074 or 415024 ×1
  • Wedge Plate 3 x 4 with Stud Notches Yellow Part 48183 Element 4240007 or 4215977 ×4
  • Wedge Plate 4 x 4 Wing Left Yellow Part 3936 Element 4280133 or 4251465 ×1
  • Wedge Plate 4 x 4 Wing Right Yellow Part 3935 Element 4280132 or 4251464 ×1
  • Wheel 68.8 x 40 Balloon Large Yellow Part 2996 Element 4251463 or 4240412 ×4

Dark Bluish Gray 22 pieces

  • Hose Rigid 3mm D. 5L / 4.0cm Dark Bluish Gray Part 75c05 Element 4251457 ×2
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×2
  • Technic Engine Crankshaft Center Dark Bluish Gray Part 2854 Element 6007058 or 4210987 ×2
  • Technic Engine Piston Round Dark Bluish Gray Part 2851 Element 4251456 ×6
  • Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides Dark Bluish Gray Part 6573 Element 6573199 or 4211023 ×2
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 1 spare in the box ×8

Blue 3 pieces

  • Hose, Pneumatic 4mm D. 128L Blue Part 5102c128 ×1
  • Pneumatic Airtank Blue Part 75974 Element 4107073 ×1
  • Technic Seat / Chair [3 x 2 Base] Blue Part 2717 Element 4252489 or 4225498 ×1

Trans-Yellow 1 piece

  • Brick Round 2 x 2 with Axle Hole Trans-Yellow Part 3941 Element 6514285 or 6273155 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 8439-1, 8459-1, 8464-1 [No Color/Any Color] Part 71468 Element 4106752 ×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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