LEGO 71842
Rontu the Master Dragon

LEGO 71842 Rontu the Master Dragon box image
Set number
71842
Theme
Ninjago
Pieces
381 pcs
Year
2025
Used & parts
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“Rontu the Master Dragon” is LEGO® “Ninjago” theme set number 71842. Released in 2025, it has 381 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 120 types

Color split (most first)
Dark Purple×65
Dark Bluish Gray×54
Black×53
Dark Blue×53
Pearl Gold×44
Dark Tan×27
Dark Pink×27
Light Bluish Gray×17
White×7
Red×4
Trans-Light Blue×3
Trans-Orange×2
Main parts (most used first)
3023 Plate 1 x 2
Dark Pink · ×17
99780 Bracket 1 x 2 - 1 x 2 Inverted
Dark Tan · ×16
11477 Slope Curved 2 x 1 No Studs [1/2 Bow]
Dark Purple · ×12
27925 Tile 2 x 2 Curved, Macaroni
Dark Purple · ×12
3171 Animal / Creature Body Part, Claw with Clip
Pearl Gold · ×12
15068 Slope Curved 2 x 2 x 2/3
Dark Blue · ×11
15070 Plate Special 1 x 1 with Vertical Tooth
Pearl Gold · ×10
14704 Plate Special 1 x 2 5.9mm Centre Side Towball Socket
Light Bluish Gray · ×8
15068 Slope Curved 2 x 2 x 2/3
Dark Purple · ×7
99781 Bracket 1 x 2 - 1 x 2
Dark Blue · ×7
26601 Wedge Plate 2 x 2 Cut Corner
Dark Blue · ×6
3022 Plate 2 x 2
Dark Purple · ×6
73825 Bracket 1 x 1 - 1 x 2 Inverted
Black · ×6
67696 Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes
Black · ×5
14417 Plate Special 1 x 2 with 5.9mm Centre Side Towball
Dark Bluish Gray · ×4
15672 Slope 45° 2 x 1 with 2/3 Cutout [New Version]
Dark Purple · ×4
2420 Plate 2 x 2 Corner
Dark Tan · ×4
25269 Tile Round 1 x 1 Quarter
Dark Blue · ×4
28802 Bracket 1 x 2 - 1 x 4 [Rounded Corners at Bottom, Square Corners at Top]
Black · ×4
3020 Plate 2 x 4
Dark Purple · ×4
3022 Plate 2 x 2
Dark Bluish Gray · ×4
3023 Plate 1 x 2
Pearl Gold · ×4
30383 Hinge Plate 1 x 2 Locking with 1 Finger On Top
Light Bluish Gray · ×4
3068b Tile 2 x 2 with Groove
Dark Tan · ×4

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