Mermaid Roller Coaster Ride

Set number

42703-1

Theme

Friends

Year

2026

Pieces

874

Minifigures

5 total (5 distinct designs) · 3 exclusive

Age

8+

Availability

Retail

Packaging

Box

Box size (L × W × H)

21.3 × 11.1 × 3.1 in (54 × 28.2 × 7.9 cm)

Model size (L × W × H)

20.5 × 11.0 × 7.5 in (52 × 28 × 19 cm)

Retail price

• US $109.99
• Canada CAD $154.99
• UK £89.99
• Europe €99.99

Store prices the store's own offer

$109.95 In stock same as retail

Sold and shipped by Walmart · Last checked 2026-10-17 05:00:06 UTC · lowest in 30 days $109.95

View on Walmart

Current market value

: Avg. New $163.99 +49% vs retail

• New median $163.99 · typical $163.99–$163.99 · 1 listing · few listings

asking prices · updated 2026-09-26 07:56:09 UTC

Release date

2026-06-01

Retiring

2027-12-31

Shelf life

1 year and 7 months

Instructions

Book 1 of 2 Book 2 of 2

All 4 instruction PDFs

Minifigures (5)

• 

  Autumn, Blue Plaid Shirt, Medium Lavender Shorts

  fig-017812

  Only in this set
• 

  Azurea

  fig-017813

  Only in this set
• 

  Leo - Dark Pink Jacket, Yellow Pants

  fig-015762

  In 3 sets
• 

  Liann - White Top, Bright Light Orange Skirt

  fig-015756

  In 3 sets
• 

  Serina

  fig-017814

  Only in this set

Qty	Image	Part	Name	Color	Sets
1		4346	Box 2 x 2 x 2 Door with Slot	Black	In 25 sets
1		4345b	Box 2 x 2 x 2 [Hollow Studs]	Black	In 57 sets
1		30089b	Equipment Camera Handheld with Central Viewfinder	Black	In 268 sets
3		77083	Grille Bar 1 x 4 x 1 2/3 Bull Bar, Squared	Black	In 33 sets
2		90370	Musical Instrument Microphone [Plain]	Black	In 81 sets
2		3020	Plate 2 x 4	Black	In 2,375 sets
1		15210	Road Sign Clip-on 2 x 2 Square [Thick Open O Clip]	Black	In 87 sets
1		3707	Technic Axle 8	Black	In 836 sets
9		61332	Technic Pin with Friction Ridges Lengthwise with No Center Slots	Black	In 1,225 sets
5		3023	Plate 1 x 2	Blue Violet	In 9 sets
4		25061	Vehicle Track, Roller Coaster, Curve	Blue Violet	In 2 sets
4		80566	Vehicle Track, Roller Coaster, Curve Ramp 13 x 13 x 3	Blue Violet	In 2 sets
1		26559	Vehicle Track, Roller Coaster Ramp Large Lower Part, 6 Bricks Elevation	Blue Violet	Exclusive
1		26560	Vehicle Track, Roller Coaster Ramp Large Upper Part, 6 Bricks Elevation	Blue Violet	Exclusive
2		25059	Vehicle Track, Roller Coaster Straight 16L	Blue Violet	In 2 sets
38		24866	Plant, Flower, Plate Round 1 x 1 with 5 Petals	Bright Light Orange	In 207 sets
1		15469	Plant, Leaves, Round 2 x 2 x 2/3 with + Axle Hole and 4 Leaf Extensions	Bright Light Orange	In 10 sets
2		32278	Technic Beam 1 x 15 Thick	Bright Light Orange	In 5 sets
3		26021	Vehicle Base, Roller Coaster Car 4 x 5	Bright Light Orange	Exclusive
2		5500	Ghost Effect with Bar	Bright Light Yellow	In 2 sets
4		33172	Plant, Carrot	Bright Light Yellow	In 3 sets
3		3023	Plate 1 x 2	Bright Light Yellow	In 138 sets
6		3623	Plate 1 x 3	Bright Light Yellow	In 35 sets
3		3069b	Tile 1 x 2 with Groove	Bright Light Yellow	In 68 sets
2		2431	Tile 1 x 4 with Groove	Bright Light Yellow	In 36 sets
2		87079	Tile 2 x 4 with Groove	Bright Light Yellow	In 39 sets
4		27507	Tile 4 x 4 Curved, Macaroni	Bright Light Yellow	In 6 sets
6		15712	Tile Special 1 x 1 with Clip with Rounded Edges	Bright Light Yellow	In 17 sets
1		11211	Brick Special 1 x 2 with 2 Studs on 1 Side	Bright Pink	In 32 sets
1		35574	Plant, Beehive / Nest	Bright Pink	In 10 sets
1		30374	Bar 4L (Lightsaber Blade / Wand)	Dark Azure	In 5 sets
1		5404	Brick Sloped 18° 2 x 1 x 2/3	Dark Blue	In 14 sets
3		14417	Plate Special 1 x 2 with 5.9mm Centre Side Towball	Dark Bluish Gray	In 683 sets
2		32828	Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1L	Dark Bluish Gray	In 86 sets
2		68888	Technic Axle Connector Hub with 4 Bars at 90°, Reinforced Axle Hole	Dark Bluish Gray	In 29 sets
6		24869	Wheel Roller Coaster	Dark Bluish Gray	In 31 sets
1		27448	Turntable 2 x 2 Female	Dark Orange	In 26 sets
1		3010	Brick 1 x 4	Dark Pink	In 62 sets
6		87087	Brick Special 1 x 1 with Stud on 1 Side	Dark Pink	In 27 sets
2		22885	Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side	Dark Pink	In 49 sets
2		3710	Plate 1 x 4	Dark Pink	In 73 sets
2		3795	Plate 2 x 6	Dark Pink	In 30 sets
2		39613	Plate Angled 3 x 3 with Heart Shape	Dark Pink	In 38 sets
2		4032a	Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	Dark Pink	In 70 sets
2		88072	Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]	Dark Pink	In 5 sets
3		18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	Dark Pink	In 116 sets
8		20482	Tile Special Round 1 x 1 with Hollow Bar	Dark Pink	In 37 sets
3		3832	Plate 2 x 10	Dark Tan	In 20 sets
2		89523	Plate Special 10 x 10 Octagonal with Hole	Dark Tan	In 32 sets
2		6587	Technic Axle 3 with Stud	Dark Tan	In 712 sets
1		3069bpr0100	Tile 1 x 2 with '100' Banknote Print	Green	In 303 sets
1		41682	Bracket 2 x 2 with 1 x 2 Vertical Studs	Lavender	In 7 sets
1		42205	Door Frame 1 x 6 x 6	Lavender	In 3 sets
9		18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	Lavender	In 54 sets
2		14769	Tile Round 2 x 2 with Bottom Stud Holder	Lavender	In 18 sets
1		3956	Bracket 2 x 2 - 2 x 2	Light Bluish Gray	In 117 sets
5		3002	Brick 2 x 3	Light Bluish Gray	In 414 sets
1		54200pr0004	Brick Sloped 30° 1 x 1 x 2/3 with Keypad, 8 White Buttons, 1 Yellow Print	Light Bluish Gray	In 21 sets
1		76959	Brick Sloped Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes]	Light Bluish Gray	In 106 sets
5		11211	Brick Special 1 x 2 with 2 Studs on 1 Side	Light Bluish Gray	In 655 sets
2		4740	Dish 2 x 2 Inverted [Radar]	Light Bluish Gray	In 376 sets
3		2445	Plate 2 x 12	Light Bluish Gray	In 311 sets
2		85861	Plate Round 1 x 1 with Open Stud	Light Bluish Gray	In 558 sets
2		77845	Plate Special 1 x 4 Rounded with 2 Open Studs	Light Bluish Gray	In 88 sets
4		23948	Technic Axle 11	Light Bluish Gray	In 63 sets
1		44294	Technic Axle 7	Light Bluish Gray	In 587 sets
1		32001	Technic Plate 2 x 6 [5 Holes]	Light Bluish Gray	In 184 sets
1		99563	Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]	Light Bluish Gray	In 278 sets
1		90195	Window 1 x 2 x 2 Castle	Light Bluish Gray	In 46 sets
1		92198pr0148	Minidoll Head, Dark Orange Eyebrows, Olive Green Eyes, Freckles, Nougat Lips, Worried	Light Nougat	Exclusive
2		2357	Brick 2 x 2 Corner	Lime	In 5 sets
1		3062b	Brick Round 1 x 1 Open Stud	Lime	In 216 sets
15		85861	Plate Round 1 x 1 with Open Stud	Lime	In 126 sets
1		98138	Tile Round 1 x 1	Lime	In 113 sets
3		39789	Brick Special 2 x 4 with 3 Axle Holes	Magenta	In 14 sets
8		32607	Plant, Plate 1 x 1 Round with 3 Leaves	Magenta	In 39 sets
3		11215	Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom	Medium Azure	In 13 sets
3		3004	Brick 1 x 2	Medium Azure	In 179 sets
1		2454b	Brick 1 x 2 x 5 with Hollow Studs	Medium Azure	In 8 sets
1		3009	Brick 1 x 6	Medium Azure	In 72 sets
4		49307	Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs	Medium Azure	In 25 sets
6		11477	Brick Curved 2 x 1 No Studs [1/2 Bow]	Medium Azure	In 94 sets
2		17485	Brick Round 2 x 2, Pin Holes	Medium Azure	In 3 sets
1		28621	Minifig Head [Plain] [Vented Stud - 2 Holes]	Medium Azure	In 3 sets
3		93095	Panel 1 x 2 x 1 with Rounded Corners and Central Divider	Medium Azure	In 49 sets
1		6330pr0014	Pillow Plush Toy with Narwhal, White Chest, Dark Blue Dots Print	Medium Azure	In 2 sets
9		3710	Plate 1 x 4	Medium Azure	In 209 sets
1		2445	Plate 2 x 12	Medium Azure	In 19 sets
1		3034	Plate 2 x 8	Medium Azure	In 71 sets
2		3033	Plate 6 x 10	Medium Azure	In 14 sets
2		4032a	Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	Medium Azure	In 155 sets
3		60474	Plate Round 4 x 4 with Pin Hole	Medium Azure	In 89 sets
4		34103	Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)	Medium Azure	In 18 sets
5		35442	Plate Special 2 x 2 Splat Gear, 6 Teeth	Medium Azure	In 37 sets
1		87580	Plate Special 2 x 2 with Groove and Center Stud (Jumper)	Medium Azure	In 143 sets
1		35443	Plate Special 4 x 4 Splat Gear, 10 Teeth	Medium Azure	In 31 sets
4		18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	Medium Azure	In 146 sets
4		6541	Technic Brick 1 x 1 with Pin Hole	Medium Azure	In 26 sets
6		3069b	Tile 1 x 2 with Groove	Medium Azure	In 241 sets
3		3068b	Tile 2 x 2 with Groove	Medium Azure	In 150 sets
1		67095	Tile Round 3 x 3	Medium Azure	Exclusive
6		3005	Brick 1 x 1	Medium Lavender	In 61 sets
3		3004	Brick 1 x 2	Medium Lavender	In 96 sets
18		3010	Brick 1 x 4	Medium Lavender	In 51 sets
3		3003	Brick 2 x 2	Medium Lavender	In 12 sets
3		3001	Brick 2 x 4	Medium Lavender	In 59 sets
8		3007	Brick 2 x 8	Medium Lavender	In 2 sets
1		16577	Brick Arch 1 x 8 x 2 Raised	Medium Lavender	In 3 sets
2		37352	Brick Curved 1 x 2 x 1 No Studs	Medium Lavender	In 8 sets
2		15672	Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version]	Medium Lavender	In 3 sets
12		28192	Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud	Medium Lavender	In 3 sets
21		3040b	Brick Sloped 45° 2 x 1 with Bottom Pin	Medium Lavender	In 30 sets
14		3039	Brick Sloped 45° 2 x 2	Medium Lavender	In 21 sets
2		3037	Brick Sloped 45° 2 x 4	Medium Lavender	In 16 sets
2		86876	Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder	Medium Lavender	In 7 sets
6		3023	Plate 1 x 2	Medium Lavender	In 149 sets
2		3623	Plate 1 x 3	Medium Lavender	In 11 sets
1		3710	Plate 1 x 4	Medium Lavender	In 114 sets
13		3020	Plate 2 x 4	Medium Lavender	In 111 sets
3		3795	Plate 2 x 6	Medium Lavender	In 68 sets
5		47847	Rock Panel 2 x 4 x 6	Medium Lavender	Exclusive
4		3069b	Tile 1 x 2 with Groove	Medium Lavender	In 68 sets
1		3069bpr0268	Tile 1 x 2 with Phone Screen, Bright Pink/White 'HEART LAKE PARK' Ticket, Barcode Print	Medium Lavender	In 3 sets
12		3068b	Tile 2 x 2 with Groove	Medium Lavender	In 58 sets
1		10116513	Sticker Sheet for Set 42703-1	[No Color/Any Color]	Exclusive
14		98138	Tile Round 1 x 1	Nougat	In 8 sets
8		1126	Tile Round 1 x 2	Nougat	In 2 sets
6		7741	Plant, Leaf Weeping Willow	Opal Trans-Bright Green	Exclusive
6		65092	Plate Special 8-Sided Crystal/Gem 1 x 1 x 2/3	Opal Trans-Clear	In 65 sets
10		3062b	Brick Round 1 x 1 Open Stud	Opal Trans-Dark Pink	In 17 sets
2		30367c	Brick Round 2 x 2 Dome Top, Hollow Stud	Opal Trans-Dark Pink	In 22 sets
1		79850	Brick Round 4 x 4 Dome Top with Round 2 x 2 Recessed, 4 Studs	Opal Trans-Light Blue	In 3 sets
1		51283	Helmet Round Sphere with Small Hole	Opal Trans-Light Blue	In 5 sets
8		8079	Rock Boulder 2 x 2 x 2/3, Top	Opal Trans-Purple	In 2 sets
1		96874	Brick and Axle Separator v2.0	Orange	In 1,420 sets
2		5904	Plant, Flower, Peony Rose with 2 Layers	Orange	In 23 sets
4		18674	Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	Orange	In 24 sets
6		92947	Brick Round 2 x 2 [Grill]	Pearl Gold	In 69 sets
1		7199	Creature Body Part, Horn (Unicorn) with Small Pin	Pearl Gold	In 4 sets
1		3023	Plate 1 x 2	Pearl Gold	In 60 sets
20		3022	Plate 2 x 2	Pearl Gold	In 92 sets
1		61252	Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip]	Pearl Gold	In 175 sets
3		48336	Plate Special 1 x 2 [Side Handle Closed Ends]	Pearl Gold	In 212 sets
12		2540	Plate Special 1 x 2 Side Handle [Free Ends]	Pearl Gold	In 70 sets
1		13770	Tap 1 x 2 with Dual Handles, Small	Pearl Gold	In 82 sets
1		15712	Tile Special 1 x 1 with Clip with Rounded Edges	Pearl Gold	In 313 sets
4		99563	Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]	Pearl Gold	In 255 sets
1		92290	Weapon Trident	Pearl Gold	In 63 sets
4		78258	Bar 2L with Stop in Center	Red	In 64 sets
1		3010	Brick 1 x 4	Red	In 988 sets
2		80683	Door 3 x 6	Reddish Brown	In 10 sets
1		4738c	Treasure Chest Bottom with Rear Slots, No Groove	Reddish Brown	In 81 sets
1		4739a	Treasure Chest Lid [Thick Hinge]	Reddish Brown	In 141 sets
4		49577	Animal / Plant, Coral / Sea Weed	Reddish Orange	In 3 sets
2		4450	Technic Axle and Pin Connector Angled #7 - 168.75°	Reddish Orange	In 8 sets
2		32000	Technic Brick 1 x 2 [2 Pin Holes]	Sand Green	In 20 sets
4		3622	Brick 1 x 3	Tan	In 367 sets
2		3001	Brick 2 x 4	Tan	In 372 sets
6		16577	Brick Arch 1 x 8 x 2 Raised	Tan	In 55 sets
5		3262	Brick Round 2 x 2 Dome Top, Vented Stud	Tan	In 12 sets
34		3941	Brick Round 2 x 2 with Axle Hole	Tan	In 188 sets
6		87087	Brick Special 1 x 1 with Stud on 1 Side	Tan	In 327 sets
7		98283	Brick Special 1 x 2 with Masonry Brick Profile	Tan	In 86 sets
6		90258	Brick Special 2 x 2 with Grooves and Axle Hole	Tan	In 14 sets
1		3460	Plate 1 x 8	Tan	In 315 sets
1		3832	Plate 2 x 10	Tan	In 192 sets
4		91988	Plate 2 x 14	Tan	In 76 sets
4		3020	Plate 2 x 4	Tan	In 872 sets
1		3795	Plate 2 x 6	Tan	In 516 sets
5		3034	Plate 2 x 8	Tan	In 337 sets
4		11212	Plate 3 x 3	Tan	In 105 sets
2		3030	Plate 4 x 10	Tan	In 66 sets
4		3036	Plate 6 x 8	Tan	In 108 sets
1		92438	Plate 8 x 16	Tan	In 99 sets
1		41948	Plate 8 x 8 with Rounded End	Tan	In 22 sets
2		11213	Plate Round 6 x 6 with Hole	Tan	In 30 sets
4		87580	Plate Special 2 x 2 with Groove and Center Stud (Jumper)	Tan	In 238 sets
3		71752	Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)	Tan	In 132 sets
2		3700	Technic Brick 1 x 2 [1 Pin Hole]	Tan	In 222 sets
3		32064a	Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin	Tan	In 77 sets
7		26603	Tile 2 x 3	Tan	In 158 sets
8		27507	Tile 4 x 4 Curved, Macaroni	Tan	In 24 sets
4		30504	Wedge Plate 8 x 8 Cut Corner	Tan	In 22 sets
2		65578	Bar, Angled with 1 x 1 Round Plate / Stud on End	Trans-Clear	In 215 sets
1		4042	Bar Curved with Axle End and 1 x 1 Round Plate	Trans-Clear	In 63 sets
2		7133	Brick Special 1 x 2 with 1 Center Stud on 1 Side, No Bottom Stud Holder	Trans-Clear	In 5 sets
1		80796	Brick Special 1 x 2 x 1 2/3 with 8 Studs on 2 Sides	Trans-Clear	In 22 sets
1		4740	Dish 2 x 2 Inverted [Radar]	Trans-Clear	In 164 sets
7		6908	Dome 1 x 1 x 2/3	Trans-Clear	In 6 sets
4		5264	Plate Special Round 1 x 1 with Hollow Stud and Underside Clip	Trans-Clear	In 30 sets
1		98138	Tile Round 1 x 1	Trans-Clear	In 639 sets
12		3941	Brick Round 2 x 2 with Axle Hole	Trans-Light Blue	In 194 sets
4		28870	Curled Decorative Ornament / Plant Vine with Bar	Trans-Light Blue	In 24 sets
2		85861	Plate Round 1 x 1 with Open Stud	Trans-Light Blue	In 162 sets
1		7068	Plate Special 2 x 2 with Bar Frame Round	Trans-Light Blue	In 3 sets
7		3069b	Tile 1 x 2 with Groove	Trans-Light Blue	In 231 sets
1		98138	Tile Round 1 x 1	Trans-Light Blue	In 418 sets
1		49595b	Animal, Sea Life Set, Clam Shell Large	Vibrant Yellow	In 2 sets
1		49595d	Animal, Sea Life Set, Clam Shell Small	Vibrant Yellow	In 2 sets
2		49595e	Animal, Sea Life Set, Fish with Bar	Vibrant Yellow	In 2 sets
1		49595a	Animal, Sea Life Set, Octopus	Vibrant Yellow	In 2 sets
2		49595g	Animal, Sea Life Set, Seahorse with Bar	Vibrant Yellow	In 2 sets
2		49595f	Animal, Sea Life Set, Snail with Bar	Vibrant Yellow	In 2 sets
2		49595c	Animal, Sea Life Set, Star Fish	Vibrant Yellow	In 2 sets
1		18866	Animal, Clam [Type 2 - Locking Edge on Inner Lip]	White	In 32 sets
2		3004	Brick 1 x 2	White	In 2,056 sets
2		3010	Brick 1 x 4	White	In 1,495 sets
1		3006	Brick 2 x 10	White	In 137 sets
2		49307	Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs	White	In 235 sets
8		5841	Brick Curved 1 x 2 x 1 with Curved Top	White	In 76 sets
2		93273	Brick Curved 4 x 1 Double, No Studs	White	In 328 sets
2		93604	Brick Round 3 x 4 x 2/3 Triple Curved with 2 Sunk Studs	White	In 39 sets
4		2449	Brick Sloped Inverted 75° 2 x 1 x 3	White	In 78 sets
2		23969	Panel 1 x 2 x 1 with Rounded Corners and 2 Sides	White	In 114 sets
8		3024	Plate 1 x 1	White	In 1,506 sets
2		3710	Plate 1 x 4	White	In 1,874 sets
2		3021	Plate 2 x 3	White	In 1,360 sets
1		3031	Plate 4 x 4	White	In 487 sets
2		3661	Plate Special Round 1 x 1 with Vertical Bar	White	In 54 sets
1		59443	Technic Axle Connector Smooth [with x Hole + Orientation]	White	In 100 sets
1		89679	Technic Panel Fairing 2 x 1 x 1	White	In 23 sets
2		18654	Technic Pin Connector Round 1L [Beam]	White	In 158 sets
3		3069bpr0272	Tile 1 x 2 with Photo of Liann, Autumn, Leo on Roller Coaster Print	White	Exclusive
4		27925	Tile 2 x 2 Curved, Macaroni	White	In 188 sets
1		3068b	Tile 2 x 2 with Groove	White	In 966 sets
2		1748	Tile Round 1 x 2 Half Circle	White	In 154 sets
2		68869	Tile Round Corners 4 x 4 x 2/3	White	In 13 sets
1		2432	Tile Special 1 x 2 with Handle	White	In 267 sets
4		35459	Tile Special 1 x 3 Inverted with Center Hole	White	In 47 sets
4		27448	Turntable 2 x 2 Female	White	In 117 sets
3		61485	Turntable 4 x 4 Square Base, Locking	White	In 110 sets
1		3245c	Brick 1 x 2 x 2 with Inside Stud Holder	Yellow	In 85 sets
1		3062b	Brick Round 1 x 1 Open Stud	Yellow	In 429 sets
1		60485	Technic Axle 9	Yellow	In 99 sets
1		98138	Tile Round 1 x 1	Yellow	In 189 sets
1		66857	Tile Round 2 x 4	Yellow	In 6 sets

Building instructions

• BI 3101, 80+4, 42703 1/2 V29
• BI 3104, 116+4, 42703 2/2 V29
• BI 3101, 80+4, 42703 1/2 V39
• BI 3104, 116+4, 42703 2/2 V39

PDFs from LEGO.com. The same booklet is often printed in several versions (e.g. V29 EU A4 format, V39 US Letter format).