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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.

The Bikini Bottom Express

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3830 The Bikini Bottom Express

200 pieces in 83 part and color combinations, plus 3 minifigures.

The official piece count includes the 10 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Orange 61 pieces

  • Brick 1 x 1 Orange Part 3005 Element 4173805 or 4119645 ×6
  • Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×12
  • Brick 1 x 3 Orange Part 3622 Element 4118787 ×2
  • Brick 1 x 6 Orange Part 3009 Element 4189007 or 4162760 ×5
  • Brick Curved 2 x 2 with Lip, No Studs Orange Part 30602 Element 4169355 ×4
  • Brick Curved 6 x 1 Orange Part 42022 Element 6092037 or 4521569 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Orange Part 3040b Element 4121967 or 4118901 ×4
  • Brick Sloped 45° 2 x 2 Orange Part 3039 Element 4118828 ×1
  • Brick Sloped Inverted 75° 2 x 1 x 3 Orange Part 2449 Element 4159199 ×4
  • Brick Special 1 x 1 with Headlight Orange Part 4070 Element 4521571 or 4212455 ×8
  • Brick Wedged, Curved 8 x 3 x 2 Open Left Orange Part 41750 Element 6489306 or 4251106 ×1
  • Brick Wedged, Curved 8 x 3 x 2 Open Right Orange Part 41749 Element 6489305 or 4251103 ×1
  • Brick Wedged, Curved Triple 4 x 6 x 2/3 with 4 Studs Orange Part 52031 Element 6224785 or 4505118 ×1
  • Cone 2 x 2 x 2, Open Stud Orange Part 3942c Element 6533789 or 6062601 ×1
  • Plate 1 x 4 Orange Part 3710 Element 4118782 ×1
  • Plate 2 x 4 Orange Part 3020 Element 4158355 or 4122468 ×6
  • Tile 1 x 2 with Groove Orange Part 3069b Element 4188771 ×2

Red 34 pieces

  • Brick Arch 1 x 6 Red Part 3455 Element 4521570 or 345521 ×1
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Red Part 6091 Element 6184782 or 609121 ×2
  • Brick Round 1 x 1 Open Stud Red Part 3062b Element 306221 ×5
  • Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 9 Teeth Red Part 60471 Element 4515338 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 1 x 3 Red Part 3623 Element 362321 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate 6 x 10 Red Part 3033 Element 6509008 or 6249097 ×1
  • Plate 6 x 8 Red Part 3036 Element 303671 or 303621 ×1
  • Plate Round Corner 3 x 3 Red Part 30357 Element 4178428 or 3035721 ×4
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×1
  • Tap 1 x 1 with Hole in Spout Red Part 4599a ×1
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Red Part 32064b ×1
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×1
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×2
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×2
  • Tile 1 x 8 with Groove Red Part 4162 Element 416221 ×2
  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×1
  • Wedge Plate 3 x 6 Cut Corners Red Part 2419 Element 241921 ×1

Trans-Clear 24 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 1 spare in the box ×6
  • Panel 1 x 2 x 2 with Porthole Blue on Orange Background Print Trans-Clear Part 4864bpr0016 Element 4293962 ×8
  • Panel 1 x 4 x 3 [Hollow Studs] Trans-Clear Part 4215b Element 4129534 Also in White ×1
  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 ×6
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×1

White 22 pieces

  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×1
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×1
  • Panel 1 x 2 x 3 [Hollow Studs] White Part 2362b Element 4113022 or 236201 ×1
  • Panel 1 x 4 x 3 [Hollow Studs] White Part 4215b Also in Trans-Clear ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel White Part 3829c01 Element 4208543 or 9551 ×1
  • Tile 1 x 2 with Black Lines and Underwater Fish Bus Print [SpongeBob Bus Ticket] White Part 3069bpr0108 Element 4521304 ×6
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×2
  • Tyre 21 x 12 with Offset Tread Small Wide and Beveled Tread Edge White Part 60700 Element 4520683 ×6

Light Bluish Gray 18 pieces

  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×1
  • Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 1 spare in the box ×1
  • Panel 1 x 2 x 2 [Hollow Studs] Light Bluish Gray Part 4864b Element 4211576 ×3
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×3
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×1
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×1
  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Light Bluish Gray Part 6014b Element 4211764 ×6

Black 12 pieces

  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Black Part 44567a Element 4185620 ×2
  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×6
  • Propeller 3 Blade 3 Diameter with Axle Cross Black Part 6041 Element 604126 ×1
  • Seat / Chair 2 x 2 Black Part 4079 ×3

Blue 12 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×2
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×2
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×3
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×2
  • Tile 1 x 1 with Groove Blue Part 3070b Element 4206330 or 307073 1 spare in the box ×2
  • Tile 2 x 2 with Groove Blue Part 3068b Element 306823 ×1

Dark Bluish Gray 10 pieces

  • Brick Curved 1 x 3 x 2 Dark Bluish Gray Part 33243 Element 6116746 or 4654039 ×2
  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×5
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×1
  • Support Round 1 x 1 x 6 Solid Pillar Dark Bluish Gray Part 43888 Element 4180811 ×1

Tan 3 pieces

  • Plate 4 x 4 Tan Part 3031 Element 4243824 or 4113919 ×1
  • Plate 4 x 6 Tan Part 3032 Element 4114001 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Trans-Green 2 pieces

  • Plant, Sea Grass Trans-Green Part 30093 Element 4256382 or 4247326 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1

Green 1 piece

  • Brick Round 1 x 1 Open Stud Green Part 3062b Element 306228 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 3830-1 [No Color/Any Color] Part 62250 Element 4521306 ×1

Minifigures 3 figures

  • SpongeBob Squarepants Minifigure, checked as a whole figure ×1
  • Patrick Star Minifigure, checked as a whole figure ×1
  • Bikini Bottom Express Bus Driver 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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