42123-1

McLaren Senna GTR

Set number: 42123-1
Year: 2021
Theme: Technic
Parts: 830
Minifigures: 0

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)

Parts list – 42123-1 McLaren Senna GTR

Search in the listColourCategorySort byShow spare parts

145 lines, 844 pieces

Parts list of set 42123-1
Part	Name	Colour	Quantity	Note
30374	Bar 4L (Lightsaber Blade / Wand)Bars, Ladders and Fences	Trans-Red	2×
30374	Bar 4L (Lightsaber Blade / Wand)Bars, Ladders and Fences	White	2×
11477	Brick Curved 2 x 1 No Studs [1/2 Bow]Bricks Curved	Black	6×
11477	Brick Curved 2 x 1 No Studs [1/2 Bow]Bricks Curved	Light Bluish Gray	2×
88930	Brick Curved 2 x 4 x 2/3 No Studs, with Bottom TubesBricks Curved	Light Bluish Gray	1×
11153	Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges]Bricks Curved	Black	1×
54200	Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Bricks Sloped	Trans-Clear	4×
4865b	Panel 1 x 2 x 1 [Rounded Corners]Panels	Black	8×
3024	Plate 1 x 1Plates	Black	6×
3024	Plate 1 x 1Plates	Light Bluish Gray	2×
3024	Plate 1 x 1Plates	Trans-Clear	2×
3710	Plate 1 x 4Plates	Black	2×
3666	Plate 1 x 6Plates	Light Bluish Gray	1×
3460	Plate 1 x 8Plates	Black	2×
3034	Plate 2 x 8Plates	Black	1×
18677	Plate Special 1 x 2 with Pin Hole UnderneathPlates Special	Black	3×
72203	Sticker Sheet for Set 42123-1Stickers	[No Color/Any Color]	1×
32062	Technic Axle 2 NotchedTechnic Axles	Black	2×
32062	Technic Axle 2 NotchedTechnic Axles	Red	22×
4519	Technic Axle 3Technic Axles	Yellow	6×
24316	Technic Axle 3 with StopTechnic Axles	Reddish Brown	13×
6587	Technic Axle 3 with StudTechnic Axles	Dark Tan	2×
3705	Technic Axle 4Technic Axles	Red	2×
87083	Technic Axle 4 with StopTechnic Axles	Dark Bluish Gray	5×
32073	Technic Axle 5Technic Axles	Light Bluish Gray	5×
15462	Technic Axle 5 with StopTechnic Axles	Reddish Brown	2×
3706	Technic Axle 6Technic Axles	Black	6×
44294	Technic Axle 7Technic Axles	Yellow	5×
55013	Technic Axle 8 with StopTechnic Axles	Dark Bluish Gray	1×
60485	Technic Axle 9Technic Axles	Light Bluish Gray	3×
41239	Technic Beam 1 x 13 ThickTechnic Beams	Black	12×
32278	Technic Beam 1 x 15 ThickTechnic Beams	Black	1×
32278	Technic Beam 1 x 15 ThickTechnic Beams	Blue	2×
43857	Technic Beam 1 x 2 ThickTechnic Beams	Black	12×
60483	Technic Beam 1 x 2 Thick with Pin Hole and Axle HoleTechnic Beams	Dark Bluish Gray	7×
41677	Technic Beam 1 x 2 ThinTechnic Beams	Black	12×
32523	Technic Beam 1 x 3 ThickTechnic Beams	Black	11×
32523	Technic Beam 1 x 3 ThickTechnic Beams	Dark Bluish Gray	2×
32523	Technic Beam 1 x 3 ThickTechnic Beams	Light Bluish Gray	2×
6632	Technic Beam 1 x 3 ThinTechnic Beams	Black	4×
6632	Technic Beam 1 x 3 ThinTechnic Beams	Red	2×
32316	Technic Beam 1 x 5 ThickTechnic Beams	Black	16×
32063	Technic Beam 1 x 6 ThinTechnic Beams	Black	4×
32063	Technic Beam 1 x 6 ThinTechnic Beams	Light Bluish Gray	2×
32524	Technic Beam 1 x 7 ThickTechnic Beams	Black	5×
32524	Technic Beam 1 x 7 ThickTechnic Beams	Blue	2×
32524	Technic Beam 1 x 7 ThickTechnic Beams	Light Bluish Gray	4×
32065	Technic Beam 1 x 7 ThinTechnic Beams	White	1×
40490	Technic Beam 1 x 9 ThickTechnic Beams	Dark Bluish Gray	5×
32140	Technic Beam 2 x 4 L-Shape ThickTechnic Beams	Black	16×
32140	Technic Beam 2 x 4 L-Shape ThickTechnic Beams	Light Bluish Gray	2×
60484	Technic Beam 3 x 3 T-Shape ThickTechnic Beams	Black	1×
32526	Technic Beam 3 x 5 L-Shape ThickTechnic Beams	Black	10×
32526	Technic Beam 3 x 5 L-Shape ThickTechnic Beams	Blue	4×
6541	Technic Brick 1 x 1 with Pin HoleTechnic Bricks	Black	2×
3713	Technic BushTechnic Bushes	Light Bluish Gray	13×
32123b	Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedTechnic Bushes	Light Bluish Gray	10×
32123b	Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedTechnic Bushes	Yellow	8×
59443	Technic Axle Connector Smooth [with x Hole + Orientation]Technic Connectors	Dark Bluish Gray	4×
32039	Technic Axle Connector with Axle HoleTechnic Connectors	Blue	4×
32013	Technic Axle and Pin Connector Angled #1Technic Connectors	Black	4×
32013	Technic Axle and Pin Connector Angled #1Technic Connectors	Blue	2×
32013	Technic Axle and Pin Connector Angled #1Technic Connectors	Light Bluish Gray	5×
32034	Technic Axle and Pin Connector Angled #2 - 180°Technic Connectors	Red	6×
32192	Technic Axle and Pin Connector Angled #4 - 135°Technic Connectors	Light Bluish Gray	2×
32015	Technic Axle and Pin Connector Angled #5 - 112.5°Technic Connectors	Blue	8×
32014	Technic Axle and Pin Connector Angled #6 - 90°Technic Connectors	Black	2×
6536	Technic Axle and Pin Connector PerpendicularTechnic Connectors	Black	19×
42003	Technic Axle and Pin Connector Perpendicular 3L with 2 Pin HolesTechnic Connectors	Black	19×
32184	Technic Axle and Pin Connector Perpendicular 3L with Centre Pin HoleTechnic Connectors	Light Bluish Gray	3×
32291	Technic Axle and Pin Connector Perpendicular DoubleTechnic Connectors	Light Bluish Gray	4×
41678	Technic Axle and Pin Connector Perpendicular Double SplitTechnic Connectors	Black	6×
63869	Technic Axle and Pin Connector Perpendicular TripleTechnic Connectors	Black	3×
63869	Technic Axle and Pin Connector Perpendicular TripleTechnic Connectors	Light Bluish Gray	2×
42195	Technic Driving Ring Connector Smooth [2 Rounded and 2 Flat Side Walls]Technic Connectors	Black	2×
65489	Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes)Technic Connectors	Light Bluish Gray	2×
65487	Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge]Technic Connectors	Black	27×
65487	Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge]Technic Connectors	Blue	2×
27940	Technic Pin Connector Hub with 2 AxlesTechnic Connectors	Blue	4×
10197	Technic Pin Connector Hub with 2 Perpendicular AxlesTechnic Connectors	Black	2×
87082	Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes]Technic Connectors	Black	2×
87082	Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes]Technic Connectors	Light Bluish Gray	3×
44809	Technic Pin Connector Perpendicular 2 x 2 BentTechnic Connectors	Light Bluish Gray	4×
32557	Technic Pin Connector Perpendicular LongTechnic Connectors	Black	5×
32557	Technic Pin Connector Perpendicular LongTechnic Connectors	Light Bluish Gray	4×
18654	Technic Pin Connector Round 1L [Beam]Technic Connectors	Black	14×
18654	Technic Pin Connector Round 1L [Beam]Technic Connectors	Light Bluish Gray	3×
62462	Technic Pin Connector Round [Slotted]Technic Connectors	Light Bluish Gray	2×
65746	Technic Pin Connector Toggle Joint Smooth Double with 2 Pins [Square Holes]Technic Connectors	Black	2×
6589	Technic Gear 12 Tooth BevelTechnic Gears	Tan	4×
32270	Technic Gear 12 Tooth Double BevelTechnic Gears	Black	2×
87761	Technic Gear Rack 1 x 7 with Axle and Pin HolesTechnic Gears	Black	1×
42531pr0001	Technic Panel Car Mudguard Arched 9 x 2 x 3 with Light Bluish Grey/Black Decorations PrintTechnic Panels	Blue	1×
42531pr0002	Technic Panel Car Mudguard Arched 9 x 2 x 3 with Light Bluish Grey/Black Decorations PrintTechnic Panels	Blue	1×
18944	Technic Panel Curved 3 x 13Technic Panels	Black	2×
24116	Technic Panel Curved and Bent 6 x 3Technic Panels	Dark Bluish Gray	2×
87080	Technic Panel Fairing #1 Small Smooth Short, Side ATechnic Panels	Black	1×
87080	Technic Panel Fairing #1 Small Smooth Short, Side ATechnic Panels	Blue	1×
87086	Technic Panel Fairing #2 Small Smooth Short, Side BTechnic Panels	Black	1×
87086	Technic Panel Fairing #2 Small Smooth Short, Side BTechnic Panels	Blue	1×
11946	Technic Panel Fairing #21 5L Small Smooth, Side BTechnic Panels	Black	9×
11946	Technic Panel Fairing #21 5L Small Smooth, Side BTechnic Panels	Blue	2×
11946	Technic Panel Fairing #21 5L Small Smooth, Side BTechnic Panels	Light Bluish Gray	1×
11947	Technic Panel Fairing #22 5L Small Smooth, Side ATechnic Panels	Black	9×
11947	Technic Panel Fairing #22 5L Small Smooth, Side ATechnic Panels	Blue	2×
11947	Technic Panel Fairing #22 5L Small Smooth, Side ATechnic Panels	Light Bluish Gray	1×
64681	Technic Panel Fairing #5 Long Smooth, Side ATechnic Panels	Blue	1×
64393	Technic Panel Fairing #6 Long Smooth, Side BTechnic Panels	Blue	1×
71682	Technic Panel Fairing 2 x 3 x 1Technic Panels	Black	2×
71682	Technic Panel Fairing 2 x 3 x 1Technic Panels	Blue	2×
11214	Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L AxleTechnic Pins	Dark Bluish Gray	20×
43093	Technic Axle Pin with Friction Ridges LengthwiseTechnic Pins	Blue	17×
4274	Technic Pin 1/2 without Friction RidgesTechnic Pins	Blue	30×
32002	Technic Pin 3/4Technic Pins	Tan	2×
32054	Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]Technic Pins	Light Bluish Gray	7×
42924	Technic Pin Long with Friction Ridges Lengthwise, 1 Center SlotTechnic Pins	Blue	68×
39888	Technic Pin Long without Friction Ridges, with Anti-Roll NotchTechnic Pins	Tan	2×
2780	Technic Pin with Friction Ridges Lengthwise and Center SlotsTechnic Pins	Black	146×
3673	Technic Pin without Friction Ridges LengthwiseTechnic Pins	Light Bluish Gray	6×
48267	Technic Tooth 1 x 3 with Axle Hole [Hollow Underside]Technic Special	Blue	2×
2819	Technic Steering Wheel Small (3 Studs Diameter)Technic Steering, Suspension and Engine	Black	1×
3070b	Tile 1 x 1 with GrooveTiles	Black	1×
6636	Tile 1 x 6 with GrooveTiles	Black	2×
26603	Tile 2 x 3Tiles	Black	2×
32199	Axle Hose, Soft 11LTubes and Hoses	Blue	3×
32202	Axle Hose, Soft 16LTubes and Hoses	Black	2×
75c09	Hose Rigid 3mm D. 9L / 7.2cmTubes and Hoses	Black	1×
30699	Tyre 43.2 x 14Wheels and Tyres	Black	2×
44309	Tyre 43.2 x 22 ZRWheels and Tyres	Black	2×
56904	Wheel 30 x 14Wheels and Tyres	Black	2×
56145	Wheel 30.4 x 20 without Pinholes, with Reinforced RimWheels and Tyres	Black	2×
54200	Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Bricks Sloped	Trans-Clear	1×	Spare
3024	Plate 1 x 1Plates	Black	1×	Spare
3024	Plate 1 x 1Plates	Light Bluish Gray	1×	Spare
3024	Plate 1 x 1Plates	Trans-Clear	1×	Spare
3713	Technic BushTechnic Bushes	Light Bluish Gray	1×	Spare
32123b	Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedTechnic Bushes	Light Bluish Gray	1×	Spare
32123b	Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedTechnic Bushes	Yellow	1×	Spare
18654	Technic Pin Connector Round 1L [Beam]Technic Connectors	Black	1×	Spare
18654	Technic Pin Connector Round 1L [Beam]Technic Connectors	Light Bluish Gray	1×	Spare
4274	Technic Pin 1/2 without Friction RidgesTechnic Pins	Blue	1×	Spare
32002	Technic Pin 3/4Technic Pins	Tan	1×	Spare
2780	Technic Pin with Friction Ridges Lengthwise and Center SlotsTechnic Pins	Black	1×	Spare
3673	Technic Pin without Friction Ridges LengthwiseTechnic Pins	Light Bluish Gray	1×	Spare
3070b	Tile 1 x 1 with GrooveTiles	Black	1×	Spare