42703-1

Mermaid Roller Coaster Ride

Set number: 42703-1
Year: 2026
Theme: Friends
Parts: 874
Minifigures: 5

Building instructions

The building instructions are on the official LEGO website. We do not host any instructions ourselves; the link below takes you to the official page.

View building instructions on LEGO.com (opens an external website)This set on Rebrickable (opens an external website)

Minifigures

fig-017812Autumn, Blue Plaid Shirt, Medium Lavender Shorts1×4 parts
fig-017813Azurea1×4 parts
fig-015762Leo - Dark Pink Jacket, Yellow Pants1×4 parts
fig-015756Liann - White Top, Bright Light Orange Skirt1×4 parts
fig-017814Serina1×4 parts

Parts list – 42703-1 Mermaid Roller Coaster Ride

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236 lines, 854 pieces

Parts list of set 42703-1
Part	Name	Colour	Quantity
7199	Creature Body Part, Horn (Unicorn) with Small PinAnimal / Creature Body Parts	Pearl Gold	1×
49577	Animal / Plant, Coral / Sea WeedAnimals / Creatures	Reddish Orange	4×
18866	Animal, Clam [Type 2 - Locking Edge on Inner Lip]Animals / Creatures	White	1×
49595b	Animal, Sea Life Set, Clam Shell LargeAnimals / Creatures	Vibrant Yellow	1×
49595d	Animal, Sea Life Set, Clam Shell SmallAnimals / Creatures	Vibrant Yellow	1×
49595e	Animal, Sea Life Set, Fish with BarAnimals / Creatures	Vibrant Yellow	2×
49595a	Animal, Sea Life Set, OctopusAnimals / Creatures	Vibrant Yellow	1×
49595g	Animal, Sea Life Set, Seahorse with BarAnimals / Creatures	Vibrant Yellow	2×
49595f	Animal, Sea Life Set, Snail with BarAnimals / Creatures	Vibrant Yellow	2×
49595c	Animal, Sea Life Set, Star FishAnimals / Creatures	Vibrant Yellow	2×
78258	Bar 2L with Stop in CenterBars, Ladders and Fences	Red	4×
30374	Bar 4L (Lightsaber Blade / Wand)Bars, Ladders and Fences	Dark Azure	1×
4042	Bar Curved with Axle End and 1 x 1 Round PlateBars, Ladders and Fences	Trans-Clear	1×
65578	Bar, Angled with 1 x 1 Round Plate / Stud on EndBars, Ladders and Fences	Trans-Clear	2×
28870	Curled Decorative Ornament / Plant Vine with BarBars, Ladders and Fences	Trans-Light Blue	4×
3005	Brick 1 x 1Bricks	Medium Lavender	6×
3004	Brick 1 x 2Bricks	Medium Azure	3×
3004	Brick 1 x 2Bricks	Medium Lavender	3×
3004	Brick 1 x 2Bricks	White	2×
3245c	Brick 1 x 2 x 2 with Inside Stud HolderBricks	Yellow	1×
2454b	Brick 1 x 2 x 5 with Hollow StudsBricks	Medium Azure	1×
3622	Brick 1 x 3Bricks	Tan	4×
3010	Brick 1 x 4Bricks	Dark Pink	1×
3010	Brick 1 x 4Bricks	Medium Lavender	18×
3010	Brick 1 x 4Bricks	Red	1×
3010	Brick 1 x 4Bricks	White	2×
3009	Brick 1 x 6Bricks	Medium Azure	1×
3006	Brick 2 x 10Bricks	White	1×
3003	Brick 2 x 2Bricks	Medium Lavender	3×
2357	Brick 2 x 2 CornerBricks	Lime	2×
3002	Brick 2 x 3Bricks	Light Bluish Gray	5×
3001	Brick 2 x 4Bricks	Medium Lavender	3×
3001	Brick 2 x 4Bricks	Tan	2×
3007	Brick 2 x 8Bricks	Medium Lavender	8×
16577	Brick Arch 1 x 8 x 2 RaisedBricks Curved	Medium Lavender	1×
16577	Brick Arch 1 x 8 x 2 RaisedBricks Curved	Tan	6×
49307	Brick Curved 1 x 1 x 2/3 Double Curved Top, No StudsBricks Curved	Medium Azure	4×
49307	Brick Curved 1 x 1 x 2/3 Double Curved Top, No StudsBricks Curved	White	2×
37352	Brick Curved 1 x 2 x 1 No StudsBricks Curved	Medium Lavender	2×
5841	Brick Curved 1 x 2 x 1 with Curved TopBricks Curved	White	8×
11477	Brick Curved 2 x 1 No Studs [1/2 Bow]Bricks Curved	Medium Azure	6×
93273	Brick Curved 4 x 1 Double, No StudsBricks Curved	White	2×
3062b	Brick Round 1 x 1 Open StudBricks Round and Cones	Lime	1×
3062b	Brick Round 1 x 1 Open StudBricks Round and Cones	Opal Trans-Dark Pink	10×
3062b	Brick Round 1 x 1 Open StudBricks Round and Cones	Yellow	1×
30367c	Brick Round 2 x 2 Dome Top, Hollow StudBricks Round and Cones	Opal Trans-Dark Pink	2×
3262	Brick Round 2 x 2 Dome Top, Vented StudBricks Round and Cones	Tan	5×
92947	Brick Round 2 x 2 [Grill]Bricks Round and Cones	Pearl Gold	6×
3941	Brick Round 2 x 2 with Axle HoleBricks Round and Cones	Tan	34×
3941	Brick Round 2 x 2 with Axle HoleBricks Round and Cones	Trans-Light Blue	12×
17485	Brick Round 2 x 2, Pin HolesBricks Round and Cones	Medium Azure	2×
93604	Brick Round 3 x 4 x 2/3 Triple Curved with 2 Sunk StudsBricks Round and Cones	White	2×
79850	Brick Round 4 x 4 Dome Top with Round 2 x 2 Recessed, 4 StudsBricks Round and Cones	Opal Trans-Light Blue	1×
6908	Dome 1 x 1 x 2/3Bricks Round and Cones	Trans-Clear	7×
5404	Brick Sloped 18° 2 x 1 x 2/3Bricks Sloped	Dark Blue	1×
54200pr0004	Brick Sloped 30° 1 x 1 x 2/3 with Keypad, 8 White Buttons, 1 Yellow PrintBricks Sloped	Light Bluish Gray	1×
15672	Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version]Bricks Sloped	Medium Lavender	2×
28192	Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and No StudBricks Sloped	Medium Lavender	12×
3040b	Brick Sloped 45° 2 x 1 with Bottom PinBricks Sloped	Medium Lavender	21×
3039	Brick Sloped 45° 2 x 2Bricks Sloped	Medium Lavender	14×
3037	Brick Sloped 45° 2 x 4Bricks Sloped	Medium Lavender	2×
76959	Brick Sloped Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes]Bricks Sloped	Light Bluish Gray	1×
2449	Brick Sloped Inverted 75° 2 x 1 x 3Bricks Sloped	White	4×
11215	Bracket 5 x 2 x 1 1/3 with Holes, Pin BottomBricks Special	Medium Azure	3×
87087	Brick Special 1 x 1 with Stud on 1 SideBricks Special	Dark Pink	6×
87087	Brick Special 1 x 1 with Stud on 1 SideBricks Special	Tan	6×
86876	Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud HolderBricks Special	Medium Lavender	2×
7133	Brick Special 1 x 2 with 1 Center Stud on 1 Side, No Bottom Stud HolderBricks Special	Trans-Clear	2×
11211	Brick Special 1 x 2 with 2 Studs on 1 SideBricks Special	Bright Pink	1×
11211	Brick Special 1 x 2 with 2 Studs on 1 SideBricks Special	Light Bluish Gray	5×
98283	Brick Special 1 x 2 with Masonry Brick ProfileBricks Special	Tan	7×
22885	Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideBricks Special	Dark Pink	2×
80796	Brick Special 1 x 2 x 1 2/3 with 8 Studs on 2 SidesBricks Special	Trans-Clear	1×
90258	Brick Special 2 x 2 with Grooves and Axle HoleBricks Special	Tan	6×
39789	Brick Special 2 x 4 with 3 Axle HolesBricks Special	Magenta	3×
4346	Box 2 x 2 x 2 Door with SlotContainers	Black	1×
4345b	Box 2 x 2 x 2 [Hollow Studs]Containers	Black	1×
4738c	Treasure Chest Bottom with Rear Slots, No GrooveContainers	Reddish Brown	1×
4739a	Treasure Chest Lid [Thick Hinge]Containers	Reddish Brown	1×
5500	Ghost Effect with BarEnergy Effects	Bright Light Yellow	2×
15210	Road Sign Clip-on 2 x 2 Square [Thick Open O Clip]Flags, Banners and Signs	Black	1×
27448	Turntable 2 x 2 FemaleHinges, Arms and Turntables	Dark Orange	1×
27448	Turntable 2 x 2 FemaleHinges, Arms and Turntables	White	4×
61485	Turntable 4 x 4 Square Base, LockingHinges, Arms and Turntables	White	3×
92198pr0148	Minidoll Head, Dark Orange Eyebrows, Olive Green Eyes, Freckles, Nougat Lips, WorriedMinidoll Heads	Light Nougat	1×
30089b	Equipment Camera Handheld with Central ViewfinderMinifig Accessories	Black	1×
90370	Musical Instrument Microphone [Plain]Minifig Accessories	Black	2×
6330pr0014	Pillow Plush Toy with Narwhal, White Chest, Dark Blue Dots PrintMinifig Accessories	Medium Azure	1×
13770	Tap 1 x 2 with Dual Handles, SmallMinifig Accessories	Pearl Gold	1×
28621	Minifig Head [Plain] [Vented Stud - 2 Holes]Minifig Heads	Medium Azure	1×
51283	Helmet Round Sphere with Small HoleMinifig Headwear	Opal Trans-Light Blue	1×
92290	Weapon TridentMinifig Shields, Weapons, & Tools	Pearl Gold	1×
23969	Panel 1 x 2 x 1 with Rounded Corners and 2 SidesPanels	White	2×
93095	Panel 1 x 2 x 1 with Rounded Corners and Central DividerPanels	Medium Azure	3×
35574	Plant, Beehive / NestPlants & Trees	Bright Pink	1×
33172	Plant, CarrotPlants & Trees	Bright Light Yellow	4×
5904	Plant, Flower, Peony Rose with 2 LayersPlants & Trees	Orange	2×
24866	Plant, Flower, Plate Round 1 x 1 with 5 PetalsPlants & Trees	Bright Light Orange	38×
7741	Plant, Leaf Weeping WillowPlants & Trees	Opal Trans-Bright Green	6×
15469	Plant, Leaves, Round 2 x 2 x 2/3 with + Axle Hole and 4 Leaf ExtensionsPlants & Trees	Bright Light Orange	1×
32607	Plant, Plate 1 x 1 Round with 3 LeavesPlants & Trees	Magenta	8×
3024	Plate 1 x 1Plates	White	8×
3023	Plate 1 x 2Plates	Blue Violet	5×
3023	Plate 1 x 2Plates	Bright Light Yellow	3×
3023	Plate 1 x 2Plates	Medium Lavender	6×
3023	Plate 1 x 2Plates	Pearl Gold	1×
3623	Plate 1 x 3Plates	Bright Light Yellow	6×
3623	Plate 1 x 3Plates	Medium Lavender	2×
3710	Plate 1 x 4Plates	Dark Pink	2×
3710	Plate 1 x 4Plates	Medium Azure	9×
3710	Plate 1 x 4Plates	Medium Lavender	1×
3710	Plate 1 x 4Plates	White	2×
3460	Plate 1 x 8Plates	Tan	1×
3832	Plate 2 x 10Plates	Dark Tan	3×
3832	Plate 2 x 10Plates	Tan	1×
2445	Plate 2 x 12Plates	Light Bluish Gray	3×
2445	Plate 2 x 12Plates	Medium Azure	1×
91988	Plate 2 x 14Plates	Tan	4×
3022	Plate 2 x 2Plates	Pearl Gold	20×
3021	Plate 2 x 3Plates	White	2×
3020	Plate 2 x 4Plates	Black	2×
3020	Plate 2 x 4Plates	Medium Lavender	13×
3020	Plate 2 x 4Plates	Tan	4×
3795	Plate 2 x 6Plates	Dark Pink	2×
3795	Plate 2 x 6Plates	Medium Lavender	3×
3795	Plate 2 x 6Plates	Tan	1×
3034	Plate 2 x 8Plates	Medium Azure	1×
3034	Plate 2 x 8Plates	Tan	5×
11212	Plate 3 x 3Plates	Tan	4×
3030	Plate 4 x 10Plates	Tan	2×
3031	Plate 4 x 4Plates	White	1×
3033	Plate 6 x 10Plates	Medium Azure	2×
3036	Plate 6 x 8Plates	Tan	4×
92438	Plate 8 x 16Plates	Tan	1×
4740	Dish 2 x 2 Inverted [Radar]Plates Round Curved and Dishes	Light Bluish Gray	2×
4740	Dish 2 x 2 Inverted [Radar]Plates Round Curved and Dishes	Trans-Clear	1×
41948	Plate 8 x 8 with Rounded EndPlates Round Curved and Dishes	Tan	1×
39613	Plate Angled 3 x 3 with Heart ShapePlates Round Curved and Dishes	Dark Pink	2×
85861	Plate Round 1 x 1 with Open StudPlates Round Curved and Dishes	Light Bluish Gray	2×
85861	Plate Round 1 x 1 with Open StudPlates Round Curved and Dishes	Lime	15×
85861	Plate Round 1 x 1 with Open StudPlates Round Curved and Dishes	Trans-Light Blue	2×
4032a	Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Plates Round Curved and Dishes	Dark Pink	2×
4032a	Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Plates Round Curved and Dishes	Medium Azure	2×
60474	Plate Round 4 x 4 with Pin HolePlates Round Curved and Dishes	Medium Azure	3×
11213	Plate Round 6 x 6 with HolePlates Round Curved and Dishes	Tan	2×
77845	Plate Special 1 x 4 Rounded with 2 Open StudsPlates Round Curved and Dishes	Light Bluish Gray	2×
3956	Bracket 2 x 2 - 2 x 2Plates Special	Light Bluish Gray	1×
41682	Bracket 2 x 2 with 1 x 2 Vertical StudsPlates Special	Lavender	1×
61252	Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip]Plates Special	Pearl Gold	1×
2540	Plate Special 1 x 2 Side Handle [Free Ends]Plates Special	Pearl Gold	12×
48336	Plate Special 1 x 2 [Side Handle Closed Ends]Plates Special	Pearl Gold	3×
14417	Plate Special 1 x 2 with 5.9mm Centre Side TowballPlates Special	Dark Bluish Gray	3×
88072	Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]Plates Special	Dark Pink	2×
34103	Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)Plates Special	Medium Azure	4×
89523	Plate Special 10 x 10 Octagonal with HolePlates Special	Dark Tan	2×
35442	Plate Special 2 x 2 Splat Gear, 6 TeethPlates Special	Medium Azure	5×
7068	Plate Special 2 x 2 with Bar Frame RoundPlates Special	Trans-Light Blue	1×
87580	Plate Special 2 x 2 with Groove and Center Stud (Jumper)Plates Special	Medium Azure	1×
87580	Plate Special 2 x 2 with Groove and Center Stud (Jumper)Plates Special	Tan	4×
71752	Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)Plates Special	Tan	3×
35443	Plate Special 4 x 4 Splat Gear, 10 TeethPlates Special	Medium Azure	1×
32828	Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1LPlates Special	Dark Bluish Gray	2×
5264	Plate Special Round 1 x 1 with Hollow Stud and Underside ClipPlates Special	Trans-Clear	4×
3661	Plate Special Round 1 x 1 with Vertical BarPlates Special	White	2×
18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)Plates Special	Dark Pink	3×
18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)Plates Special	Lavender	9×
18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)Plates Special	Medium Azure	4×
18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)Plates Special	Orange	4×
32001	Technic Plate 2 x 6 [5 Holes]Plates Special	Light Bluish Gray	1×
30504	Wedge Plate 8 x 8 Cut CornerPlates Wedged	Tan	4×
65092	Plate Special 8-Sided Crystal/Gem 1 x 1 x 2/3Rock	Opal Trans-Clear	6×
8079	Rock Boulder 2 x 2 x 2/3, TopRock	Opal Trans-Purple	8×
47847	Rock Panel 2 x 4 x 6Rock	Medium Lavender	5×
10116513	Sticker Sheet for Set 42703-1Stickers	[No Color/Any Color]	1×
23948	Technic Axle 11Technic Axles	Light Bluish Gray	4×
6587	Technic Axle 3 with StudTechnic Axles	Dark Tan	2×
44294	Technic Axle 7Technic Axles	Light Bluish Gray	1×
3707	Technic Axle 8Technic Axles	Black	1×
60485	Technic Axle 9Technic Axles	Yellow	1×
32278	Technic Beam 1 x 15 ThickTechnic Beams	Bright Light Orange	2×
6541	Technic Brick 1 x 1 with Pin HoleTechnic Bricks	Medium Azure	4×
3700	Technic Brick 1 x 2 [1 Pin Hole]Technic Bricks	Tan	2×
32000	Technic Brick 1 x 2 [2 Pin Holes]Technic Bricks	Sand Green	2×
32064a	Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom PinTechnic Bricks	Tan	3×
68888	Technic Axle Connector Hub with 4 Bars at 90°, Reinforced Axle HoleTechnic Connectors	Dark Bluish Gray	2×
59443	Technic Axle Connector Smooth [with x Hole + Orientation]Technic Connectors	White	1×
4450	Technic Axle and Pin Connector Angled #7 - 168.75°Technic Connectors	Reddish Orange	2×
18654	Technic Pin Connector Round 1L [Beam]Technic Connectors	White	2×
89679	Technic Panel Fairing 2 x 1 x 1Technic Panels	White	1×
61332	Technic Pin with Friction Ridges Lengthwise with No Center SlotsTechnic Pins	Black	9×
3069bpr0100	Tile 1 x 2 with '100' Banknote PrintTiles	Green	1×
3069b	Tile 1 x 2 with GrooveTiles	Bright Light Yellow	3×
3069b	Tile 1 x 2 with GrooveTiles	Medium Azure	6×
3069b	Tile 1 x 2 with GrooveTiles	Medium Lavender	4×
3069b	Tile 1 x 2 with GrooveTiles	Trans-Light Blue	7×
3069bpr0268	Tile 1 x 2 with Phone Screen, Bright Pink/White 'HEART LAKE PARK' Ticket, Barcode PrintTiles	Medium Lavender	1×
3069bpr0272	Tile 1 x 2 with Photo of Liann, Autumn, Leo on Roller Coaster PrintTiles	White	3×
2431	Tile 1 x 4 with GrooveTiles	Bright Light Yellow	2×
3068b	Tile 2 x 2 with GrooveTiles	Medium Azure	3×
3068b	Tile 2 x 2 with GrooveTiles	Medium Lavender	12×
3068b	Tile 2 x 2 with GrooveTiles	White	1×
26603	Tile 2 x 3Tiles	Tan	7×
87079	Tile 2 x 4 with GrooveTiles	Bright Light Yellow	2×
27925	Tile 2 x 2 Curved, MacaroniTiles Round and Curved	White	4×
27507	Tile 4 x 4 Curved, MacaroniTiles Round and Curved	Bright Light Yellow	4×
27507	Tile 4 x 4 Curved, MacaroniTiles Round and Curved	Tan	8×
98138	Tile Round 1 x 1Tiles Round and Curved	Lime	1×
98138	Tile Round 1 x 1Tiles Round and Curved	Nougat	14×
98138	Tile Round 1 x 1Tiles Round and Curved	Trans-Clear	1×
98138	Tile Round 1 x 1Tiles Round and Curved	Trans-Light Blue	1×
98138	Tile Round 1 x 1Tiles Round and Curved	Yellow	1×
1126	Tile Round 1 x 2Tiles Round and Curved	Nougat	8×
1748	Tile Round 1 x 2 Half CircleTiles Round and Curved	White	2×
14769	Tile Round 2 x 2 with Bottom Stud HolderTiles Round and Curved	Lavender	2×
66857	Tile Round 2 x 4Tiles Round and Curved	Yellow	1×
67095	Tile Round 3 x 3Tiles Round and Curved	Medium Azure	1×
68869	Tile Round Corners 4 x 4 x 2/3Tiles Round and Curved	White	2×
15712	Tile Special 1 x 1 with Clip with Rounded EdgesTiles Special	Bright Light Yellow	6×
15712	Tile Special 1 x 1 with Clip with Rounded EdgesTiles Special	Pearl Gold	1×
2432	Tile Special 1 x 2 with HandleTiles Special	White	1×
99563	Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]Tiles Special	Light Bluish Gray	1×
99563	Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]Tiles Special	Pearl Gold	4×
35459	Tile Special 1 x 3 Inverted with Center HoleTiles Special	White	4×
20482	Tile Special Round 1 x 1 with Hollow BarTiles Special	Dark Pink	8×
96874	Brick and Axle Separator v2.0Tools	Orange	1×
77083	Grille Bar 1 x 4 x 1 2/3 Bull Bar, SquaredTransportation - Land	Black	3×
26021	Vehicle Base, Roller Coaster Car 4 x 5Transportation - Land	Bright Light Orange	3×
26559	Vehicle Track, Roller Coaster Ramp Large Lower Part, 6 Bricks ElevationTransportation - Land	Blue Violet	1×
26560	Vehicle Track, Roller Coaster Ramp Large Upper Part, 6 Bricks ElevationTransportation - Land	Blue Violet	1×
25059	Vehicle Track, Roller Coaster Straight 16LTransportation - Land	Blue Violet	2×
25061	Vehicle Track, Roller Coaster, CurveTransportation - Land	Blue Violet	4×
80566	Vehicle Track, Roller Coaster, Curve Ramp 13 x 13 x 3Transportation - Land	Blue Violet	4×
24869	Wheel Roller CoasterWheels and Tyres	Dark Bluish Gray	6×
80683	Door 3 x 6Windows and Doors	Reddish Brown	2×
42205	Door Frame 1 x 6 x 6Windows and Doors	Lavender	1×
90195	Window 1 x 2 x 2 CastleWindows and Doors	Light Bluish Gray	1×