LEGO 45804
HYDRO DYNAMICS Challenge Kit

LEGO 45804 HYDRO DYNAMICS Challenge Kit box image
Set number
45804
Theme
FIRST LEGO League
Pieces
2,052 pcs
Year
2017
Used & parts
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“HYDRO DYNAMICS Challenge Kit” is LEGO® “FIRST LEGO League” theme set number 45804. Released in 2017, it has 2,052 pieces. With Re:GO you can automatically work out what percentage of this set you can build from the LEGO parts you already own, along with the missing parts and an estimated cost. Use the links below to compare prices on Amazon, Rakuten, Yahoo! Shopping, Mercari and Yahoo! Auctions, and find the best deal on new, used, or individual parts.

Part breakdown 372 types

Color split (most first)
Light Bluish Gray×584
Black×272
Dark Bluish Gray×270
White×260
Blue×146
Yellow×122
Medium Azure×113
Red×84
Trans-Clear×33
Tan×32
Trans-Light Blue×26
Reddish Brown×26
Main parts (most used first)
2780 Technic Pin with Friction Ridges Lengthwise and Center Slots
Black · ×158
6558 Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots
Blue · ×104
85080 Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]
White · ×48
2412b Tile Special 1 x 2 Grille with Bottom Groove
Light Bluish Gray · ×28
3004 Brick 1 x 2
White · ×28
3673 Technic Pin without Friction Ridges Lengthwise
Light Bluish Gray · ×24
48092 Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs
Light Bluish Gray · ×24
85080 Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]
Yellow · ×24
3623 Plate 1 x 3
Light Bluish Gray · ×22
48092 Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs
Medium Azure · ×22
18980 Plate Round Corners 2 x 6 Double
Light Bluish Gray · ×21
3623 Plate 1 x 3
Dark Bluish Gray · ×20
15535 Tile Round 2 x 2 with Hole
Light Bluish Gray · ×18
85984 Slope 30° 1 x 2 x 2/3
Light Bluish Gray · ×18
3010 Brick 1 x 4
Medium Azure · ×17
4274 Technic Pin 1/2
Blue · ×17
30565 Plate Round Corner 4 x 4
White · ×16
32140 Technic Beam 2 x 4 L-Shape Thick
Dark Bluish Gray · ×16
14769 Tile Round 2 x 2 with Bottom Stud Holder
Medium Azure · ×15
3710 Plate 1 x 4
White · ×15
43093 Technic Axle Pin with Friction Ridges Lengthwise
Blue · ×15
32525 Technic Beam 1 x 11 Thick
White · ×14
3004 Brick 1 x 2
Medium Azure · ×13
11833 Plate Round 4 x 4 with 2 x 2 Round Opening
Trans-Clear · ×13

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