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Replacement Pack for Middle School

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45655 Replacement Pack for Middle School

369 pieces in 73 part and color combinations, plus 4 minifigures.

The official piece count includes the 12 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

White 92 pieces

  • Brick 1 x 1 with Simple Black Eye with White Pupil Print White Part 3005pr0003 Element 4569080 ×6
  • Brick 1 x 2 x 5 with Hollow Studs White Part 2454b Element 6619280 or 245401 ×4
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×4
  • Brick Curved 1 x 2 x 1 No Studs White Part 37352 Element 6552172 or 6248827 ×6
  • Brick Curved 2 x 3 White Part 6215 Element 621501 ×6
  • Cone 1 x 1 [Top Groove] White Part 59900 Element 6601844 or 4518400 ×12
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals White Part 24866 Element 6206149 ×12
  • Plate Round Corners 4 x 4 x 2/3 Circle with 2 x 2 Opening White Part 79387 Element 6564917 or 6534728 ×2
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] White Part 15208 Element 6046381 ×4
  • Technic Axle Pin 3L without Friction Ridges and 2L Axle White Part 65249 Element 6289797 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×6
  • Technic Brick 1 x 4 [3 Pin Holes] White Part 3701 Element 6601913 or 370101 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] White Part 3702 Element 4582543 or 370201 ×4
  • Technic Gear Rack 1 x 4 White Part 3743 Element 6457281 or 4250465 ×2
  • Technic Plate 2 x 6 [5 Holes] White Part 32001 Element 6552133 or 4527947 ×4
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×6
  • Tile Round 2 x 4 White Part 66857 Element 6329902 ×6

Bright Light Orange 42 pieces

  • Brick 1 x 2 Bright Light Orange Part 3004 Element 6003003 or 4490695 ×6
  • Brick 1 x 4 Bright Light Orange Part 3010 Element 6003004 or 4490697 ×2
  • Brick Curved Inverted 2 x 4 Double Bright Light Orange Part 5174 Element 6468850 ×4
  • Cone 1 x 1 [Top Groove] Bright Light Orange Part 59900 Element 6482736 ×12
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Light Orange Part 24866 Element 6209681 ×12
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Bright Light Orange Part 66792 Element 6308882 ×2
  • Technic Plate 2 x 4 [3 Holes] Bright Light Orange Part 3709 Element 6132408 ×4

Coral 42 pieces

  • Brick Curved 1 x 2 x 1 No Studs Coral Part 37352 Element 6261293 ×6
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Coral Part 24866 Element 6295242 ×12
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Coral Part 32064a Element 6439447 ×6
  • Tile 1 x 2 with Groove Coral Part 3069b Element 6258566 ×6
  • Tile Round 1 x 1 Half Circle Coral Part 24246 Element 6475308 or 6341396 ×12

Dark Blue 28 pieces

  • Brick 2 x 2 Dark Blue Part 3003 Element 4296785 or 4264580 ×6
  • Brick Curved 1 x 3 x 2 Dark Blue Part 33243 Element 6097486 or 4591837 ×4
  • Brick Special 1 x 2 with 2 Studs on 1 Side Dark Blue Part 11211 Element 6554205 or 6135606 ×6
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Dark Blue Part 66792 Element 6534727 ×2
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Blue Part 18674 Element 6253885 ×6
  • Tile 1 x 6 with Groove Dark Blue Part 6636 Element 4252437 ×4

Medium Nougat 28 pieces

  • Brick 2 x 2 x 3 Medium Nougat Part 30145 Element 6482742 ×4
  • Brick Round 2 x 2 with Axle Hole Medium Nougat Part 3941 Element 6454167 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Medium Nougat Part 54200 Element 6167690 ×12
  • Brick Special 1 x 2 Palisade [aka Log] Medium Nougat Part 30136 Element 4651231 ×6
  • Technic Plate 2 x 8 [7 Holes] Medium Nougat Part 3738 Element 6363803 ×2

Bright Green 26 pieces

  • Brick 1 x 4 Bright Green Part 3010 Element 6310856 or 6014487 ×2
  • Cone 2 x 2 x 2, Open Stud Bright Green Part 3942c Element 6182664 ×4
  • Plant, Grass Stem with Bar Hole [3.2mm] Bright Green Part 15279 Element 6566117 or 6413056 ×6
  • Plant, Leaf 2 x 6 x 1 with 2 Studs Bright Green Part 3565 Element 6510105 or 6433394 ×4
  • Plant, Leaves, Round 2 x 2 x 2/3 with + Axle Hole and 4 Leaf Extensions Bright Green Part 15469 Element 6345196 ×4
  • Plant, Plate 1 x 1 Round with 3 Leaves Bright Green Part 32607 Element 6182261 ×6

Tan 26 pieces

  • Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder Tan Part 86876 Element 6478176 ×6
  • Cone 1 x 1 Inverted with Bar at Bottom (Ice Cream Cone) Tan Part 11610 Element 6538442 or 6017003 ×6
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Tan Part 15573 Element 6092587 ×6
  • Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale) Tan Part 71752 Element 6330903 ×6
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Tan Part 18575 Element 6346517 or 6084724 ×2

Dark Turquoise 24 pieces

  • Brick 1 x 2 x 2 with Inside Stud Holder Dark Turquoise Part 3245c Element 6428472 ×4
  • Brick Curved 6 x 1 Dark Turquoise Part 42022 Element 6465246 ×4
  • Brick Special 2 x 4 with 3 Axle Holes Dark Turquoise Part 39789 Element 6482741 ×4
  • Cone 1 x 1 [Top Groove] Dark Turquoise Part 59900 Element 6482735 ×12

Trans-Light Blue 16 pieces

  • Brick 1 x 2 without Bottom Tube Trans-Light Blue Part 3065 Element 6514268 or 6244910 ×4
  • Brick 1 x 2 x 5 without Side Supports Trans-Light Blue Part 46212 Element 6514084 or 6251284 ×4
  • Brick Round 2 x 2 with Axle Hole Trans-Light Blue Part 3941 Element 6514282 or 6273153 ×4
  • Brick Sloped 45° 2 x 2 Trans-Light Blue Part 3039 Element 6514099 or 6244885 ×4

Black 15 pieces

  • Flexible Ribbed Hose 8mm Ends 10L Black Part 27328 Element 6454757 or 6253307 ×3
  • Plate Special 2 x 2 with Rubber Foot Black Part 109373 Element 6492701 ×6
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Black Part 4185 Element 6323668 or 6192130 ×2
  • Wheel Smooth 24 x 14mm with Pin Hole Black Part 5253 Element 6482581 ×2

Light Bluish Gray 14 pieces

  • Brick Special 1 x 2 with Pin - Bottom Stud Holder Light Bluish Gray Part 44865 Element 6321770 ×4
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×4
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 ×6

Yellow 10 pieces

  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×4
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×4
  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×2

Blue 2 pieces

  • Brick 1 x 4 Blue Part 3010 Element 301023 ×2

Medium Lavender 2 pieces

  • Brick 1 x 4 Medium Lavender Part 3010 Element 6107188 ×2

Red 2 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×2

Minifigures 4 figures

  • Monochrome Bright Green Minifigure, checked as a whole figure ×1
  • Monochrome Red, 28621 Head Minifigure, checked as a whole figure ×1
  • Monochrome Blue Minifigure, checked as a whole figure ×1
  • Monochrome Bright Light Orange, 28621 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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