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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.

Universal Building Set

Checking

912 Universal Building Set

460 pieces in 121 part and color combinations, plus 3 minifigures.

LEGO counts 471 pieces. This inventory comes from a separate parts catalog and lists 472, including the 12 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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 222 pieces

  • Battery Box, 4.5V 6 x 11 x 3 1/3 Type 3 [Complete Assembly] Black Part 468c03 ×1
  • Brick 1 x 1 Black Part 3005 Element 300526 ×8
  • Brick 1 x 2 Black Part 3004 Element 300426 ×10
  • Brick 1 x 4 Black Part 3010 Element 301026 ×6
  • Brick 1 x 6 Black Part 3009 Element 300926 ×6
  • Brick 1 x 8 Black Part 3008 Element 300826 ×6
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Black Part 3002a ×4
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×4
  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×2
  • Brick Sloped 45° 2 x 1 Double / Inverted with Hollow Bottom Black Part 3049c Element 4163371 ×1
  • Brick Sloped 45° 2 x 1 Double without Bottom Pin Black Part 3044a ×2
  • Brick Sloped 45° 2 x 1 without Bottom Pin Black Part 3040a ×4
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×12
  • Brick Sloped 45° 2 x 2 Double Black Part 3043 Element 4163373 or 304326 ×4
  • Brick Sloped 45° 2 x 2 Double Concave Black Part 3046a Element 6477383 or 4218890 ×4
  • Brick Sloped 45° 2 x 3 Black Part 3038 Element 303826 ×4
  • Brick Sloped 45° 2 x 3 Double Black Part 3042 ×2
  • Brick Sloped 45° 2 x 4 Black Part 3037 Element 303726 ×16
  • Brick Sloped 45° 2 x 4 Double Black Part 3041 Element 4189063 or 304126 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Small Stud Holes] Black Part 3660b ×6
  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×2
  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside Black Part 7049bc01 ×4
  • Fence Gate 1 x 3 x 2 Base Black Part 3359 ×2
  • Panel, Trapezoid, Tipper End Flat with Pins, 1 x 2 Anti-studs Black Part 3145 ×2
  • Plate 1 x 1 Black Part 3024 Element 302426 ×3
  • Plate 1 x 2 Black Part 3023 Element 302326 ×5
  • Plate 1 x 8 Black Part 3460 Element 346026 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×4
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate 2 x 8 Black Part 3034 Element 303426 ×4
  • Plate 4 x 6 Black Part 3032 Element 303226 ×2
  • Plate 4 x 8 Black Part 3035 Element 303526 ×2
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • Rubber Band Large [Square Cross Section] Black Part 70158 ×2
  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×2
  • String Cord Thin (0.5mm) 50cm Black Part 56823c50 Element 6530026 or 6489925 ×1
  • String Cord Thin (0.5mm) 75cm Black Part 56823c75 Element 7909 ×1
  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Link with Two Studs Black Part 273 2 spares in the box ×48
  • Turntable 4 x 4 Square Base with Top, Complete Assembly Black Part 3403c01 Element 4221663 or 4143677 ×1
  • Tyre 14 x 4 Smooth Small Single Black Part 3139 Element 313926 ×1
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4
  • Tyre 43 x 17 Black Part 3634 Element 4523564 or 363426 ×4
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×4

Yellow 142 pieces

  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×12
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×20
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×14
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×16
  • Brick 1 x 8 Yellow Part 3008 Element 300824 ×6
  • Brick 2 x 10 Yellow Part 3006 Element 6119276 or 6073100 ×2
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×4
  • Brick 2 x 3 without Cross Supports Yellow Part 3002a ×4
  • Brick 2 x 4 without Cross Supports Yellow Part 3001a ×4
  • Brick 2 x 8 Yellow Part 3007 Element 4639693 or 300724 ×2
  • Brick Arch 1 x 8 x 2 Yellow Part 3308 Element 4501536 or 4189053 ×2
  • Brick Round 1 x 1 Solid Stud Yellow Part 3062a ×2
  • Brick Sloped 45° 2 x 2 Yellow Part 3039 Element 303924 ×4
  • Brick Sloped 45° 2 x 4 Yellow Part 3037 Element 4219911 or 303724 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Small Stud Holes] Yellow Part 3660b ×8
  • Brick Special 1 x 1 x 2 with Shutter Holder Yellow Part 3581 Element 4189055 or 358124 ×4
  • Brick Special 1 x 2 with Digger Bucket Arm Holder Yellow Part 3317 Element 331724 ×1
  • Construction Vehicle Bucket Smooth 3 x 5 x 1 & 1/3 Yellow Part 3433 Element 343324 ×1
  • Crane Bucket [Complete Assembly] Yellow Part 3492c01 Element 6021197 or 4614755 ×1
  • Door Frame 1 x 3 x 4 Yellow Part 3579 ×1
  • Motor, Train, 4.5V 12 x 4 x 3 1/3 Type II Yellow Part upn0259c01 ×1
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×4
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×4
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×4
  • Plate 2 x 8 Yellow Part 3034 Element 303424 ×4
  • Plate 4 x 10 Yellow Part 3030 Element 4200024 or 4142103 ×2
  • Plate 4 x 6 Yellow Part 3032 Element 303224 ×2
  • Plate Special 2 x 2 with Helicopter Tail Rotor Holder Yellow Part 3481 ×2
  • Plate Special 2 x 3 with Helicopter Rotor Holder Yellow Part 3462 ×1
  • String Reel Winch 4 x 4 x 2 with Metal Handle, Red Drum Yellow Part 586c01 ×1
  • Tail Old Yellow Part 3587 ×1

Red 46 pieces

  • Construction Vehicle Bucket Arm, Large Red Part 828 ×1
  • Door 1 x 3 x 4 with Glass Red Part 7930 ×1
  • Fence Lattice 1 x 4 x 1 Red Part 3633 Element 4187280 or 363321 ×4
  • Hinge Plate 2 x 4 with Articulated Joint - Female Red Part 3640 Element 4237554 ×1
  • Hinge Plate 2 x 4 with Articulated Joint - Male Red Part 3639 Element 4237551 ×1
  • Hook, Plate 1 x 2 with Crane Hook Left Red Part 3127 Element 4120019 ×1
  • Plate Special 1 x 4 with Towball Red Part 3184 Element 318421 ×1
  • Plate Special 1 x 4 with Towball Socket, Long, 2 Slots Red Part 3183a ×1
  • Technic Bush Old Type 2 Red Part 585 ×6
  • Technic Gear 9 Large Tooth Red Part 569 ×4
  • Wheel Centre Small with Stub Axles (Pulley Wheel) Red Part 3464 Element 4180583 or 346421 ×1
  • Wheel Old with 4 Studs Red Part 7039 Element 7039 ×4
  • Wheel Spoked with Stud Red Part 242c01 ×4
  • Wheel with Split Axle hole Red Part 3482 Element 4240344 or 348221 ×4
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Red Part 3081c01 Element 7026 ×6
  • Window 1 x 2 x 2 Shutter Red Part 3582 Element 358221 ×4
  • Window 1 x 4 x 2 Classic with Short Sill [Complete] Red Part 453cc01 ×2

Light Gray 32 pieces

  • Engine - Smooth, Small 1 x 2 Side Plate [No Axle Holders] Light Gray Part 3475a ×2
  • Hinge Plate 2 x 4 - Female (Digger Bucket Holder) Light Gray Part 3597 Element 359702 ×1
  • Hinge Plate 2 x 4 - Male (Digger Bucket Holder) Light Gray Part 3315 Element 331502 ×1
  • Hinge Plate 2 x 5 with Large Hole [Complete Assembly] Light Gray Part 3149bc01 Element 4106905 or 74814 ×1
  • Hinge Plate 2 x 9 with Hole Close to Hinge [Complete Assembly] Light Gray Part 3324ac01 Element 4106906 ×2
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×4
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×2
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×4
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×4
  • Plate Special 2 x 2 with Wheel Holder Bottom Light Gray Part 8 ×1
  • Plate Special 2 x 5 with Towball Socket Light Gray Part 3491 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Light Gray Part 3176 Element 317652 or 317602 ×2
  • Propeller 2 Blade Light Gray Part 3480 ×2
  • Propeller 4 Blade 5 Diameter with Hole for Rotor Holder Light Gray Part 3461 ×1
  • Technic Brick 2 x 4 with Top/Side/End Holes and Hollow Studs Light Gray Part 3709a ×2
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×2

Trans-Clear 12 pieces

  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×4
  • Brick 1 x 4 Trans-Clear Part 3010 Element 4256588 or 4227529 ×2
  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 ×2
  • Brick Sloped 45° 2 x 4 Trans-Clear Part 3037 Element 303740 ×2
  • Windscreen 2 x 4 x 1 2/3 Trans-Clear Part 21 ×2

Blue 4 pieces

  • Vehicle Track, Train, Tapered Rail Straight 16L Blue Part 3228a ×4

Green 1 piece

  • Baseplate 24 x 32 with Rounded Corners Green Part 10a ×1

White 1 piece

  • Wire with Light Gray 2-Prong Connectors, 4.5V, Type 1 Connectors, 96L White Part 141ac96 ×1

Minifigures 3 figures

  • LEGOLAND Blue Minifigure, checked as a whole figure ×2
  • LEGOLAND White 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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