How many pieces does the LEGO Mermaid Roller Coaster Ride (42703-1) have?

The LEGO Mermaid Roller Coaster Ride set (42703-1) contains 1006 pieces. It was released in 2026 as part of the LEGO Friends theme.

How can I find missing parts for LEGO set 42703-1?

On BrickMissing you can check which parts from the LEGO Mermaid Roller Coaster Ride (42703-1) you already own. Add your LEGO collection and we'll show exactly which of the 1006 pieces you're missing and which you already have.

Can I build the LEGO Mermaid Roller Coaster Ride 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 1006 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Mermaid Roller Coaster Ride from?

The LEGO Mermaid Roller Coaster Ride (42703-1) belongs to the LEGO Friends theme. You can browse all Friends sets on BrickMissing to find more sets from this theme.

Mermaid Roller Coaster Ride

🏷️ 42703-1•🎨 Friends•📅 2026•🧱 1006 parts•Advanced

The LEGO Friends Mermaid Roller Coaster Ride (42703-1) presents a vibrant aquatic amusement park experience for 2026. This 864-piece set features a fully functional roller coaster, meticulously designed to race its cars around a central, rotating pool where the elegant mermaids Serina and Azuria perform. Each mermaid mini-doll includes distinct translucent hair elements, enhancing their ethereal appearance during their synchronized water show. Among the five included mini-dolls is Autumn, whose unique facial element can be interchanged to display either a relaxed or an excited expression, perfectly capturing the thrill of the ride. The detailed theme park environment incorporates a charming ticket entrance, a comprehensive park map, and various photo opportunities, all constructed with specific curved track pieces and decorative details that define the ride’s winding path through the underwater world.

Parts Inventory

🧱 1006 parts

Part	Color	Qty
Plate 2 x 4 3020	Black	2×
MICROPHONE W/ Ã˜3.2 SHAFT 18740	Black	2×
MAILBOX, CASING 2X2X2 4345	Black	1×
Box 2 x 2 x 2 Door with Slot 4346	Black	1×
FOUR-SIDED SIGN WITH SNAP 65673	Black	1×
Grille Bar 1 x 4 x 1 2/3 Bull Bar, Squared 77083	Black	3×
Hair Long with Bun 2633	Black	1×
CAMERA 4724	Black	1×
Technic Axle 8 3707	Black	1×
Technic Pin with Friction Ridges Lengthwise with No Center Slots 61332	Black	9×

Showing 10 of 223 parts

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Grille Bar 1 x 4 x 1 2/3 Bull Bar, Squared	77083	Black	3×
Hair Long with Bun	2633	Black	1×
CAMERA	4724	Black	1×
Technic Axle 8	3707	Black	1×
Technic Pin with Friction Ridges Lengthwise with No Center Slots	61332	Black	9×
Plate 1 x 2	3023	Black	5×
Plate 2 x 8	3034	Tan	5×
Plate 2 x 6	3795	Tan	1×
Plate 2 x 4	3020	Tan	4×
Brick 2 x 4	3001	Tan	2×
Plate 1 x 8	3460	Tan	1×
BRICK Ø16 W. CROSS	6143	Tan	34×
Brick 1 x 3	3622	Tan	4×
Technic Brick 1 x 2 [1 Pin Hole]	3700	Tan	2×
Plate 2 x 10	3832	Tan	1×
Plate Special 2 x 2 with Groove and Center Stud (Jumper)	87580	Tan	4×
Brick Special 1 x 1 with Stud on 1 Side	87087	Tan	6×
Plate 8 x 16	92438	Tan	1×
Plate 2 x 14	91988	Tan	4×
Plate 4 x 10	3030	Tan	2×
Plate 6 x 8	3036	Tan	4×
Plate Round 6 x 6 with Hole	11213	Tan	2×
Plate 3 x 3	11212	Tan	4×
Brick Special 1 x 2 with Masonry Brick Profile	98283	Tan	7×
Tile 2 x 3	26603	Tan	7×
BRICK 1X2 WITH CROSS HOLE	31493	Tan	3×
Plate 8 x 8 with Rounded End	41948	Tan	1×
BRICK W. BOW 1X8X2	40296	Tan	6×
Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)	71752	Tan	3×
Brick Round 2 x 2 Dome Top, Vented Stud	3262	Tan	5×
BRICK 2X2 W/GROOVE A.CR.HOLE	39683	Tan	6×
TILE 4X4, W/ BOW, NO. 5	3477	Tan	8×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Orange	4×
ELEMENT SEPARATOR	31510	Orange	1×
Plant, Flower, Peony Rose with 2 Layers	5904	Orange	2×
Brick 1 x 4	3010	Black	1×
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side	22885	Black	2×
Plate 1 x 4	3710	Black	2×
Brick Special 1 x 1 with Stud on 1 Side	87087	Black	6×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Black	3×
Plate Angled 3 x 3 with Heart Shape	39613	Black	2×
Plate 2 x 6	3795	Black	2×
PLATE 1X1 W/3.2 SHAFT/1.5 HOLE	31561	Black	8×
PLATE 2X2 ROUND	4032	Black	2×
PLATE 1X2 W. VERTICAL SCHAFT	43876	Black	2×
Brick 1 x 4	3010	Red	1×
Bar 2L with Stop in Center	78258	Red	4×
Brick Special 2 x 4 with 3 Axle Holes	39789	Black	3×
Plant, Plate 1 x 1 Round with 3 Leaves	32607	Black	8×
ROUND BRICK 1X1	3062	Yellow	1×
BRICK 1X2X2	3245	Yellow	1×
FLAT TILE 1X1, ROUND	35381	Yellow	1×
SHORTS, W/ HIP, NO. 14	2268	Yellow	1×
Tile Round 2 x 4	66857	Yellow	1×
Technic Axle 9	60485	Yellow	1×
ROUND BRICK 1X1	3062	Lime	1×
PL.ROUND 1X1 W. THROUGHG. HOLE	28626	Lime	15×
FLAT TILE 1X1, ROUND	35381	Lime	1×
Brick 2 x 2 Corner	2357	Lime	2×
FLAT TILE 1X2	3069	Black	3×
Plate 1 x 2	3023	Black	3×
Tile 2 x 4 with Groove	87079	Black	2×
Tile 1 x 4 with Groove	2431	Black	2×
Plate 1 x 3	3623	Black	6×
Plate 1x1 with Up Right Holder	44842	Black	6×
Ghost Effect with Bar	5500	Trans-Red	2×
CARROT	20086	Black	4×
LIGHT SWORD - BLADE	21462	Black	1×
FLAT TILE 1X2, DEC. 100	82317	Metallic Silver	1×
Hair Curly with Thin Braid	2640	Bright Light Yellow	1×
Turntable 2 x 2 Female	27448	White	1×
Plate Special 1 x 2 with 5.9mm Centre Side Towball	14417	Dark Bluish Gray	3×
Wheel Roller Coaster	24869	Dark Bluish Gray	6×
Technic Axle Connector Hub with 4 Bars at 90°, Reinforced Axle Hole	68888	Dark Bluish Gray	2×
Plate Round 1 x 1 with Hollow Stud and Horizontal Bar 1L	32828	Dark Bluish Gray	2×
Slope 18° 2 x 1 x 2/3	5404	Medium Nougat	1×
Plant, Flower, Plate Round 1 x 1 with 5 Petals	24866	Black	38×
SHORTS, W/ HIP, NO. 15	36198	Black	1×
Plant, Leaves, Round 2 x 2 x 2/3 with + Axle Hole and 4 Leaf Extensions	15469	Dark Green	1×
TECHNIC 15M BEAM	64871	Black	2×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Black	9×
Tile Round 2 x 2 with Bottom Stud Holder	14769	Black	2×
Door Frame 1 x 6 x 6	42205	Black	1×
Bracket 2 x 2 with 1 x 2 Vertical Studs	41682	Black	1×
MINI DOLL, HEAD, NO. 336	101267	Light Nougat	1×
Brick Special 1 x 2 with 2 Studs on 1 Side	11211	Black	1×
Plant, Beehive / Nest	35574	Bright Pink	1×
Brick 1 x 6	3009	Black	1×
FLAT TILE 1X2	3069	Medium Azur	6×
FLAT TILE 2X2	3068	Medium Azur	3×
Plate 1 x 4	3710	Black	9×
Slope Curved 2 x 1 No Studs [1/2 Bow]	11477	Black	6×
Brick 1 x 2	3004	Black	3×
Plate Round 4 x 4 with Pin Hole	60474	Black	3×
PLATE 2X2 ROUND	4032	Medium Azur	2×
PLATE 2X2 W 1 KNOB	23893	Medium Azur	1×
Plate 6 x 10	3033	Black	2×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Black	4×
Technic Brick 1 x 1 with Pin Hole	6541	Black	4×
Plate Special 4 x 4 Splat Gear with 10 Teeth	35443	Dark Bluish Gray	1×
Plate 2 x 8	3034	Black	1×
Plate Special 2 x 2 Splat Gear with 6 Teeth	35442	Black	5×
Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs	49307	Black	4×
Plate 2 x 12	2445	Black	1×
Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom	11215	Black	3×
BRICK 1X2X5	2454	Medium Azur	1×
MINI HEAD	3274	Medium Azur	1×
Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)	34103	Black	4×
BRICK 2X2 ROUND W/ HOLE Ã˜4,85	79566	Medium Azur	2×
Tile Round 3 x 3	67095	Black	1×
Plate 1 x 2	3023	Dark Purple	6×
Plate 2 x 4	3020	Dark Purple	13×
Plate 1 x 4	3710	Dark Purple	1×
Brick 1 x 2	3004	Dark Purple	3×
Plate 2 x 6	3795	Dark Purple	3×
Brick 1 x 1	3005	Dark Purple	6×
Brick 2 x 4	3001	Dark Purple	3×
ROOF TILE 1X2/45Â°	3040	Dark Purple	21×
Slope 45? 2 x 2	3039	Dark Purple	14×
Brick 1 x 4	3010	Dark Purple	18×
Slope 45° 2 x 4	3037	Dark Purple	2×
FLAT TILE 1X2	3069	Dark Purple	4×
FLAT TILE 2X2	3068	Dark Purple	12×
Brick Curved 1 x 2 x 1 No Studs	37352	Dark Purple	2×
BRICK W. BOW 1X8X2	40296	Dark Purple	1×
BRICK 2X8	93888	Dark Purple	8×
Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder	86876	Dark Purple	2×
Slope 45° 2 x 1 with 2/3 Inverted Cutout and no stud	28192	Dark Purple	12×
Plate 1 x 3	3623	Dark Purple	2×
Brick 2 x 2	3003	Dark Purple	3×
Slope 45? 2 x 1 with 2/3 Cutout [New Version]	15672	Dark Purple	2×
MINI DOLL, HEAD, NO. 335	101191	Pearl Very Light Gray	1×
TORSO,BOY, W/ ARM, NO. 198	73161	Pearl Very Light Gray	1×
Plate 2 x 12	2445	Light Bluish Gray	3×
Brick 2 x 3	3002	Light Bluish Gray	5×
Dish 2 x 2 Inverted [Radar]	4740	Light Bluish Gray	2×
Technic Plate 2 x 6 [5 Holes]	32001	Light Bluish Gray	1×
Window 1 x 2 x 2 Castle	90195	Light Bluish Gray	1×
Brick Special 1 x 2 with 2 Studs on 1 Side	11211	Light Bluish Gray	5×
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]	99563	Light Bluish Gray	1×
PL.ROUND 1X1 W. THROUGHG. HOLE	28626	Light Bluish Gray	2×
PLATE 2X2 ANGLE	35262	Light Bluish Gray	1×
ROOF TILE 1X1X2/3, NO. 7	78238	Light Bluish Gray	1×
Slope Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes]	76959	Light Bluish Gray	1×
Plate Special 1 x 4 Rounded with 2 Open Studs	77845	Light Bluish Gray	2×
Technic Axle 7	44294	Light Bluish Gray	1×
Technic Axle 11	23948	Light Bluish Gray	4×
Hair, Ponytail Long Wavy	1987	Black	1×
FLAT TILE 1X1, ROUND	35381	Dark Tan	14×
Tile Round 1 x 2	1126	Medium Nougat	8×
CHEST 2X4	4738	Reddish Brown	1×
CHEST LID 2X4	29336	Reddish Brown	1×
Hair Scruffy and Swept Right	40938	Reddish Brown	1×
Door 3 x 6	80683	Dark Brown	2×
Animal / Plant, Coral / Sea Weed	49577	Magenta	4×
Technic Axle and Pin Connector Angled #7 - 168.75°	4450	Black	2×
Technic Brick 1 x 2 [2 Pin Holes]	32000	Black	2×
Plate Special 10 x 10 Octagonal with Hole	89523	Dark Tan	2×
Plate 2 x 10	3832	Dark Tan	3×
CROSSAXLE 3M WITH KNOB	13670	Dark Tan	2×
Bar Curved with Axle End and 1 x 1 Round Plate	4042	Trans-Clear	1×
Bar, Angled with 1 x 1 Round Plate / Stud on End	65578	Trans-Clear	2×
FLAT TILE 1X1, ROUND	35380	Trans-Clear	1×
Parabolic Element D16	35395	Trans-Clear	1×
Brick Special 1 x 2 x 1 2/3 with 8 Studs on 2 Sides	80796	Trans-Clear	1×
Brick Special 1 x 2 with 1 Center Stud on 1 Side, No Bottom Stud Holder	7133	Trans-Clear	2×
Plate Round 1 x 1 with Hollow Stud and Underside Clip	5264	Trans-Clear	4×
Helmet Round Sphere with Small Hole	51283	Trans-Red	1×
Hair, Long Curly, Internal Supports	5828	Dark Brown	1×
Curled Decorative Ornament with Bar	28870	Trans-Neon Green	4×
PL.ROUND 1X1 W. THROUGHG. HOLE	29387	Trans-Neon Green	2×
FLAT TILE 1X1, ROUND	35380	Trans-Neon Green	1×
FLAT TILE 1X2	35386	Trans-Neon Green	7×
BRICK 2X2 CIRCLE W/ CROSS	39223	Trans-Neon Green	12×
Plate Special 2 x 2 with Bar Frame Round	7068	Trans-Neon Green	1×
FINAL BRICK 2X2	40528	Black	2×
ROUND BRICK 1X1	35390	Black	10×
Plate Special 8-Sided Crystal/Gem 1 x 1 x 2/3	65092	Opal Trans-Clear	6×
Animal, Sea Life Set [Complete Set]	49595	Coral	1×
Plate Special 1 x 2 [Side Handle Closed Ends]	48336	Yellow	3×
Brick Round 2 x 2 [Grill]	92947	Pearl Gold	6×
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]	99563	Yellow	4×
Plate 1 x 2	3023	Yellow	1×
MIXER TAP	35194	Medium Lime	1×
Plate 1x1 with Up Right Holder	44842	Medium Lime	1×
Weapon Trident	92290	Pearl Gold	1×
Plate Special 1 x 2 Side Handle [Free Ends]	2540	Yellow	12×
PLATE 1X1 W/HOLDER VERTICAL	52738	Medium Lime	1×
Plate 2 x 2	3022	Yellow	20×
Creature Body Part, Horn (Unicorn) with Small Pin	7199	Pearl Gold	1×
MINI DOLL HEAD, NO. 14	101186	Black	1×
Tile Special 1 x 2 with Handle	2432	White	1×
Brick 1 x 2	3004	White	2×
Brick 1 x 4	3010	White	2×
Plate 2 x 3	3021	White	2×
Plate 1 x 1	3024	White	8×
FLAT TILE 2X2	3068	White	1×
Plate 1 x 4	3710	White	2×
Plate 4 x 4	3031	White	1×
Slope Inverted 75° 2 x 1 x 3	2449	White	4×
Turntable 4 x 4 Square Base, Locking	61485	White	3×
BRICK 2X10	92538	White	1×
Slope Curved 3 x 4 x 2/3 Triple Curved with 2 Sunk Studs	93604	White	2×
Slope Curved 4 x 1 Double with No Studs	93273	White	2×
Animal, Clam [Type 2 - Locking Edge on Inner Lip]	18866	White	1×
Tile 2 x 2 Curved, Macaroni	27925	White	4×
Tile Special 1 x 3 Inverted with Center Hole	35459	White	4×
WALL DOUBLE CORNER 1X2X1	35391	White	2×
Brick Curved 1 x 1 x 2/3 Double Curved Top, No Studs	49307	White	2×
Plate Round 1 x 1 with Vertical Bar	3661	White	2×
Tile Round 1 x 2 Half Circle	1748	White	2×
Brick Curved 1 x 2 x 1 with Curved Top	5841	White	8×
TORSO, GIRL, W/ ARM, NO. 588	73141	Chrome Pink	1×
Tile Round Corners 4 x 4 x 2/3	68869	White	2×
Turntable 2 x 2 Female	27448	White	4×
Technic Pin Connector Round 1L [Beam]	18654	White	2×
Technic Axle Connector Smooth [with x Hole + Orientation]	59443	White	1×
Technic Panel Fairing 2 x 1 x 1	89679	White	1×

Build DNA

Parts inventory insights for Mermaid Roller Coaster Ride

1,006 pieces puts this build +230% against the average Friends set and +60% against the average 2026 release.

LEGOFRIENDS

Vs average Friends set

+230%+701 parts

This set1,006

Average set305

Average Friends set: 305 pieces across 539 other sets.

Vs average 2026 set

+60%+379 parts

This set1,006

Average set627

Average 2026 set: 627 pieces across 427 other sets.

Color profile

24different colors

Dominant color

Black

Black219x

28%

Dark Purple138x

17%

Tan127x

16%

White67x

Unique parts

4.3 pieces per unique type

183

Repeat factor

Average pieces per unique type.

Most used part

Plant, Flower, Plate Round 1 x 1 with 5 Petals

38x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

This site is not affiliated with or endorsed by the LEGO Group.

Build Insights🧩183unique parts🎨24different colors📊41.9avg. parts per color🏆38×Plant, Flower, Plate Round 1 x 1 with 5 Petals

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