How many pieces does the LEGO HYDRO DYNAMICS Challenge Kit (45804-1) have?

The LEGO HYDRO DYNAMICS Challenge Kit set (45804-1) contains 2052 pieces. It was released in 2017 as part of the LEGO FIRST LEGO League theme.

How can I find missing parts for LEGO set 45804-1?

On BrickMissing you can check which parts from the LEGO HYDRO DYNAMICS Challenge Kit (45804-1) you already own. Add your LEGO collection and we'll show exactly which of the 2052 pieces you're missing and which you already have.

Can I build the LEGO HYDRO DYNAMICS Challenge Kit with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 2052 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO HYDRO DYNAMICS Challenge Kit from?

The LEGO HYDRO DYNAMICS Challenge Kit (45804-1) belongs to the LEGO FIRST LEGO League theme. You can browse all FIRST LEGO League sets on BrickMissing to find more sets from this theme.

HYDRO DYNAMICS Challenge Kit

45804-1 FIRST LEGO League 2017 2052 parts 0.8% catalog rarity Advanced

HYDRO DYNAMICS Challenge Kit (45804-1) is a LEGO set with a listed count of 2052 parts. Available inventory data is shown below.

Parts Inventory

🧱 2052 parts

Showing the first 12 rows of the parts list (2052 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Light Bluish Gray	4×	€0,16 View at LEGO → View
Black	4×	€0,42 View at LEGO → View
Light Bluish Gray	4×	€0,13 View at LEGO → View
White	4×	€0,13 View at LEGO → View
Medium Azure	5×	€0,41 View at LEGO → View
White	1×	€0,41 View at LEGO → View
Light Bluish Gray	1×	€0,41 View at LEGO → View
Red	2×	€0,10 View at LEGO → View
Medium Azure	1×	€0,06 View at LEGO → View
Trans-Clear	13×	€0,36 View at LEGO → View
Bright Light Orange	11×	Check price → View
Medium Azure	6×	Check price → View

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Catalog rarity

How common are the parts in HYDRO DYNAMICS Challenge Kit?

0.8%Low rarity

more commonless common

3 of 372 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

14.4%

All sets

6.7%

Least common in our catalog

Slope Curved 4 x 4 x 2/3 Triple Curved · White · only this set in our catalogTechnic Panel Curved 11 x 3 · Medium Azure · 3 sets in our catalogTechnic Panel Fairing #1 Small Smooth Sh… · Dark Purple · 3 sets in our catalog

How we calculate this →