How many pieces does the LEGO ETX Alien Mothership Assault (7691-1) have?

The LEGO ETX Alien Mothership Assault set (7691-1) contains 434 pieces. It was released in 2007 as part of the LEGO Space theme.

How can I find missing parts for LEGO set 7691-1?

On BrickMissing you can check which parts from the LEGO ETX Alien Mothership Assault (7691-1) you already own. Add your LEGO collection and we'll show exactly which of the 434 pieces you're missing and which you already have.

Can I build the LEGO ETX Alien Mothership Assault 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 434 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO ETX Alien Mothership Assault from?

The LEGO ETX Alien Mothership Assault (7691-1) belongs to the LEGO Space theme. You can browse all Space sets on BrickMissing to find more sets from this theme.

ETX Alien Mothership Assault

🏷️ 7691-1•🎨 Space•📅 2007•🧱 434 parts•Intermediate

ETX Alien Mothership Assault (7691-1) is a LEGO Space from 2007. This page uses the available set and theme data until a fuller product description is available.

Parts Inventory

🧱 434 parts

Part	Color	Qty
Aero Tube 32 x 3 x 2 1/3 23221	Trans-Orange	1×
Equipment Goblet / Glass 2343	Black	2×
Tile Special 1 x 2 Grille with Bottom Groove 2412b	Orange	2×
Tile Special 1 x 2 Grille with Bottom Groove 2412b	Dark Bluish Gray	5×
Tile 1 x 4 with Groove 2431	Black	1×
Tile 1 x 4 with Groove 2431	Dark Bluish Gray	2×
Tile Special 1 x 2 with Handle 2432	White	1×
Tile Special 1 x 2 with Handle 2432	Black	2×
Brick 2 x 6 2456	Black	1×
Brick Special 1 x 2 with Pin 2458	Dark Bluish Gray	1×

Showing 10 of 143 parts

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Tile 1 x 4 with Groove	2431	Dark Bluish Gray	2×
Tile Special 1 x 2 with Handle	2432	White	1×
Tile Special 1 x 2 with Handle	2432	Black	2×
Brick 2 x 6	2456	Black	1×
Brick Special 1 x 2 with Pin	2458	Dark Bluish Gray	1×
Brick Special 1 x 2 with Pin	2458	Light Bluish Gray	2×
Plate Special 1 x 2 Side Handle [Free Ends]	2540	Black	3×
Tile Special 1 x 1 with Clip and Straight Tips	2555	Black	2×
Brick Special 1 x 4 with Groove	2653	Light Bluish Gray	2×
Technic Pin with Friction Ridges Lengthwise and Center Slots	2780	Black	9×
Lever Small Base with Black Lever	298c02	Black	2×
Brick 2 x 4	3001	Black	1×
Brick 2 x 3	3002	White	1×
Handlebars	30031	Black	2×
Brick 1 x 2	3004	White	1×
Brick 1 x 1	3005	Light Bluish Gray	4×
Brick 1 x 6	3009	Light Bluish Gray	2×
Brick 1 x 4	3010	White	3×
Brick 1 x 4	3010	Black	2×
Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud	30151a	Trans-Clear	2×
Rock 1 x 1 Jewel / Gem 24 Facet	30153	Trans-Neon Green	6×
Plate 2 x 4	3020	Dark Bluish Gray	8×
Plate 2 x 4	3020	White	3×
Plate 2 x 3	3021	Dark Bluish Gray	6×
Plate 2 x 2	3022	Light Bluish Gray	10×
Plate 1 x 2	3023	Red	1×
Plate 4 x 4	3031	Dark Bluish Gray	4×
Plate 4 x 4	3031	White	5×
Plate 2 x 8	3034	Light Bluish Gray	2×
Plate 2 x 8	3034	Black	6×
Plate 4 x 8	3035	Dark Bluish Gray	1×
Brick Round 2 x 2 x 2 Robot Body, Axle Holder 'X' Orientation	30361b	White	2×
Hinge Brick 1 x 2 Locking with 1 Finger Vertical End	30364	Dark Bluish Gray	2×
Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth	30365	Black	2×
Bar 4L (Lightsaber Blade / Wand)	30374	Light Bluish Gray	2×
Slope 45? 2 x 2	3039	Black	3×
Slope 45° 2 x 2 with Radar Screen Print	3039pr0005	White	1×
Slope 45° 2 x 1 with Bottom Pin	3040b	White	4×
Hinge Brick 1 x 2 Locking with 1 Finger Horizontal End	30541	Red	4×
Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth	30553	Black	2×
Plate Round Corner 4 x 4	30565	Lime	2×
Launcher, Aero Tube Air Pump 16 x 14 x 13 [Complete Assembly]	30584c01	White	1×
Aero Tube Joiner 3 x 4 x 3	30585b	Trans-Clear	2×
Slope 2 x 2 No Studs, with 3 Side Pistons Raised Edges	30603	Black	3×
Technic Brick 1 x 2 [2 Pin Holes]	32000	Dark Bluish Gray	4×
Technic Brick 1 x 2 [2 Pin Holes]	32000	White	1×
Technic Beam 1 x 11.5 Double Bent Thick	32009	Dark Bluish Gray	2×
Technic Axle and Pin Connector Angled #1	32013	White	1×
Technic Axle and Pin Connector Angled #3 - 157.5?	32016	Black	1×
Technic Brick 1 x 14 [13 Pin Holes]	32018	White	3×
Technic Brick 1 x 14 [13 Pin Holes]	32018	Black	4×
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]	32054	Red	2×
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]	32054	Light Bluish Gray	2×
Technic Axle 2 Notched	32062	Red	3×
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]	32064b	Light Bluish Gray	6×
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced	32123b	Light Bluish Gray	3×
Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller)	32125	Light Bluish Gray	2×
Technic Pin Double with Axle Hole	32138	Black	4×
Technic Beam 2 x 4 L-Shape Thick	32140	Light Bluish Gray	1×
Technic Beam 1 x 5 Thick	32316	Light Bluish Gray	2×
Technic Beam 1 x 7 Thick	32524	Dark Bluish Gray	1×
Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top]	32530	Dark Bluish Gray	10×
Technic Brick 4 x 6 with 2 x 4 Opening	32531	Black	2×
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]	3660	Light Bluish Gray	2×
Plate 1 x 6	3666	Dark Bluish Gray	2×
Slope 65° 2 x 2 x 2 with Bottom Tube	3678b	Dark Bluish Gray	2×
Turntable 2 x 2 Plate - Top	3679	Light Bluish Gray	2×
Turntable 2 x 2 Plate, Base	3680	Black	2×
Technic Brick 1 x 2 [1 Pin Hole]	3700	Light Bluish Gray	4×
Technic Brick 1 x 4 [3 Pin Holes]	3701	Black	3×
Technic Axle 4	3705	Black	1×
Technic Axle 6	3706	Black	1×
Plate 1 x 4	3710	White	1×
Technic Bush	3713	Light Bluish Gray	2×
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)	3794a	Dark Gray	2×
Plate 2 x 6	3795	Dark Bluish Gray	4×
Technic Brick 1 x 6 [5 Pin Holes]	3894	Black	2×
Hinge Brick 1 x 2 Base	3937	Light Bluish Gray	2×
Brick Round 2 x 2 with Axle Hole	3941	White	2×
Brick Round 2 x 2 with Axle Hole	3941	Trans-Neon Green	2×
Antenna 1 x 4 with Rounded Top	3957a	Tan	8×
Plate 6 x 6	3958	Dark Bluish Gray	1×
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	4032a	Dark Bluish Gray	4×
Large Figure Weapon Spear, Drill with Axle and Hole	40340	Black	1×
Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole	40378	Lime	8×
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section	40379	Lime	6×
Brick Special 1 x 1 with Headlight	4070	Black	6×
Seat / Chair 2 x 2	4079	Tan	2×
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]	4081b	Black	2×
Tile Round 2 x 2 with Bottom Cross	4150	Black	10×
Wedge Plate 4 x 2 Right	41769	Black	2×
Wedge Plate 4 x 2 Left	41770	Black	2×
Plate Special 2 x 2 with Grills	41862	Light Bluish Gray	2×
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes	42003	Black	1×
Brick Curved 6 x 1	42022	Black	2×
Wedge Curved 12 x 3 Right	42060	White	1×
Wedge Curved 12 x 3 Left	42061	White	1×
Technic Pin 1/2	4274	Light Bluish Gray	3×
Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°]	4285b	Trans-Neon Green	2×
Technic Axle Pin with Friction Ridges Lengthwise	43093	Black	7×
Wedge Plate 4 x 4 with 2 x 2 Cutout	43719	Black	8×
Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth	44302a	Black	6×
Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove	44567a	Dark Bluish Gray	6×
Plate 1 x 10	4477	Dark Bluish Gray	2×
Hinge Tile 1 x 4 Locking Dual 1 Fingers on Top [4 Locking Ridges]	44822	Black	1×
Plate Special 1 x 8 with Door Rail	4510	Black	4×
Technic Axle 3	4519	Light Bluish Gray	2×
Technic Axle Connector Double Flexible [Rubber]	45590	Black	1×
Cone 1 x 1 [No Top Groove]	4589	Trans-Dark Blue	2×
Cone 1 x 1 [No Top Groove]	4589	Trans-Neon Green	8×
Cone 1 x 1 [No Top Groove]	4589	Trans-Red	8×
Technic Worm Gear	4716	Black	1×
Panel 1 x 2 x 1 [Square Corners]	4865a	White	1×
Wedge Curved 10 x 3 Left	50955	Black	2×
Wedge Curved 10 x 3 Right	50956	Black	2×
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small	53451	Red	2×
Projectile, Technic Competition Arrow, Liftarm Shaft with Hollow Black Rubber End	57028c01	Light Bluish Gray	1×
Flexible Ribbed Hose 8mm Ends 19L	57539	Orange	3×
Launcher, Technic Competition Cannon Flat Bottom [Complete Assembly]	57796	Black	1×
Hinge Plate 1 x 12 Locking 7 Teeth with Angled Side Extensions and Tapered Ends	57906	Lime	2×
Hinge Plate 1 x 12 Locking 7 Teeth with Angled Side Extensions and Tapered Ends	57906	Black	2×
Projectile, Weapon Foam Dart with Black Tip	58842	Black	4×
Brick Round Corner 10 x 10 with Slope 33° Edge, Axle Hole, Facet Cutout	58846	Black	6×
Launcher, Weapon, Four Barrel Foam Dart Launcher	59492	Orange	1×
Sticker Sheet for Set 7691-1	59623	Unknown	1×
Hinge Brick 2 x 2 Top Plate Thin	6134	Black	2×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Dark Blue	4×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Neon Green	4×
Brick Arch 1 x 4 x 2	6182	White	1×
Bar 1 x 4 x 2	6187	Black	1×
Technic Axle Connector Ridged [with x Hole x Orientation]	6538b	Lime	1×
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle)	6553	Black	1×
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots	6558	Black	7×
Technic Axle 3 with Stud	6587	Dark Bluish Gray	3×
Tile 1 x 6 with Groove	6636	Dark Bluish Gray	2×
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly]	73983	Light Bluish Gray	4×
Technic Pin Connector Round [No Slot]	75535	Black	4×
Technic Rubber Belt 24mm	85544	Light Bluish Gray	4×

Build DNA

Parts inventory insights for ETX Alien Mothership Assault

434 pieces puts this build +59% against the average Space set and +4% against the average 2007 release.

LEGOSPACE

Vs average Space set

+59%+161 parts

This set434

Average set273

Average Space set: 273 pieces across 91 other sets.

Vs average 2007 set

+4%+15 parts

This set434

Average set419

Average 2007 set: 419 pieces across 165 other sets.

Color profile

17different colors

Dominant color

Black

Black149x

36%

Dark Bluish Gray72x

17%

Light Bluish Gray68x

16%

White34x

Unique parts

3.2 pieces per unique type

129

Repeat factor

Average pieces per unique type.

Most used part

Cone 1 x 1 [No Top Groove]

18x

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🧩129unique parts🎨17different colors📊25.5avg. parts per color🏆18×Cone 1 x 1 [No Top Groove]

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