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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.

Battrax

Checking

6941 Battrax

278 pieces in 81 part and color combinations, plus 1 minifigure.

The piece count includes the 6 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

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 217 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×4
  • Brick 1 x 1 Black Part 3005 Element 300526 ×2
  • Brick 1 x 2 Black Part 3004 Element 300426 ×8
  • Brick 1 x 2 with Yellow Grill Print Black Part 3004pr9982 Element 4189081 ×2
  • Brick 1 x 3 Black Part 3622 Element 362226 ×4
  • Brick 1 x 4 Black Part 3010 Element 301026 ×2
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×1
  • Brick 2 x 2 Corner Black Part 2357 Element 235776 or 235726 ×2
  • Brick 2 x 4 Black Part 3001 Element 300126 ×1
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×12
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×8
  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×1
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×4
  • Brick Sloped 45° 2 x 2 Double Convex Black Part 3045 Element 4189064 or 304526 ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Black Part 4287a ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×6
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×4
  • Brick Special 2 x 2 with Pin and No Axle Hole Black Part 4730 Element 473026 ×3
  • Brick Wedged, Sloped 4 x 4 Taper with Blacktron I Logo Print Black Part 4858pr0001 Element 4190701 ×1
  • Equipment Signal Paddle Black Part 3900 Element 6575081 or 4255667 ×1
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×4
  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×4
  • Hinge Vehicle Roof Holder 1 x 4 Black Part 4315 Element 4250225 or 431576 ×1
  • Panel 1 x 2 x 1 [Square Corners] Black Part 4865a Element 486526 ×4
  • Panel 1 x 2 x 2 [Solid Studs] Black Part 4864a Element 4113021 ×4
  • Plate 1 x 1 Black Part 3024 Element 302426 ×16
  • Plate 1 x 10 Black Part 4477 Element 447726 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×25
  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 1 x 6 Black Part 3666 Element 366626 ×5
  • Plate 1 x 8 Black Part 3460 Element 346026 ×6
  • Plate 2 x 10 Black Part 3832 Element 383226 ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×4
  • Plate 2 x 4 Black Part 3020 Element 302026 ×6
  • Plate 2 x 6 Black Part 3795 Element 379526 ×5
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×4
  • Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts] Black Part 4476b Element 6110030 or 4142131 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×1
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×4
  • Tool Hammer / Mallet Large Black Part 4522 Element 452226 ×1
  • Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1
  • Tyre 43 x 17 Black Part 3634 Element 4523564 or 363426 ×4
  • Weapon Gun / Torch (Space) [with Grooves] Black Part 3959 Element 4254942 or 395976 ×1
  • Wedge Plate 4 x 4 Wing Left Black Part 3936 Element 4280156 or 4189084 ×1
  • Wedge Plate 4 x 4 Wing Right Black Part 3935 Element 4280157 or 4189086 ×1
  • Wedge Plate 8 x 4 Wing Right without Stud Notch Black Part 3934a ×1
  • Wedge, Plate 8 x 4 Wing Left without Underside Stud Notch Black Part 3933a ×1
  • Wheel with Split Axle hole Black Part 3482 Element 4279396 or 4199226 ×4
  • Window 1 x 2 x 3 Shutter Black Part 3856 Element 4189085 or 385626 ×4
  • Window 1 x 4 x 3 Black Part 3853 Element 4216388 or 4189082 ×2

Yellow 27 pieces

  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×2
  • Brick Special 1 x 1 with Headlight Yellow Part 4070 Element 407024 ×4
  • Plate 1 x 10 Yellow Part 4477 Element 6079138 or 6078095 ×2
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×2
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×2
  • Plate 2 x 10 Yellow Part 3832 Element 383224 ×1
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thin U Clip] Yellow Part 4085b ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×4
  • Tile 1 x 2 with Black Grill Print Yellow Part 3069bpr0022 Element 4189079 ×2
  • Tile 1 x 2 with Long Black Arrow Print Yellow Part 3069bpr0035 Element 81148 ×2
  • Tile 1 x 2 with Space Computer Print Yellow Part 3069bpr0039 Element 4189080 ×1

Trans-Red 22 pieces

  • Cone 1 x 1 [No Top Groove] Trans-Red Part 4589 Element 618841 ×4
  • Dish 2 x 2 Inverted [Radar] Trans-Red Part 4740 Element 6580377 or 6245303 ×2
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×12

Light Gray 6 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×2

Trans-Yellow 6 pieces

  • Flexible Hose 8.5L with Tabless Ends Black (Ends different color than Tube) Trans-Yellow Part 73590c01b ×4
  • Windscreen 4 x 4 x 2 Canopy Extender, Hinge Trans-Yellow Part 2337 Element 4189077 ×1
  • Windscreen 6 x 4 x 2 Canopy Trans-Yellow Part 4474 Element 4189078 or 3006644 ×1

Minifigures 1 figure

  • Blacktron I (3626a Head) Minifigure, checked as a whole figure ×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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