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HYDRO DYNAMICS Challenge Kit LEGO set box
LEGO Set

HYDRO DYNAMICS Challenge Kit

45804-1

Released: 2017 · Parts: 2,052 · Theme: FIRST LEGO League

HYDRO DYNAMICS Challenge Kit (45804-1) is a FIRST LEGO League LEGO set released in 2017 with 2,052 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing FIRST LEGO League sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 1 minifigure and 372 unique part types.

  • → Browse the full parts inventory
  • → See every minifigure included in the set
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  • → Check market value for parts and minifigs

Buying checklist

Quick context before you buy this set used or verify a marketplace listing.

  • Release year

    2017 (9 years ago — may be retired)

  • Catalog scale

    2,052 parts listed · 372 inventory lines tracked

  • Minifigures

    1 in this set's inventory — verify completeness when buying used

  • Build manual

    No digital manual in our catalog — check the box tab or LEGO.com

  • Build complexity

    Large set — expect sticker sheets or multiple subassemblies; inspect photos closely

  • Shipping weight (est.)

    ~3,874 g for parts inventory (excludes box/minifig packaging)

  • Before you buy used

    Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing

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Market value

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Minifigures in HYDRO DYNAMICS Challenge Kit

Parts in this set

372 parts · page 1 of 8 · updating…