How many pieces does the LEGO Ultimate Accessories (3801-1) have?

The LEGO Ultimate Accessories set (3801-1) contains 45 pieces. It was released in 2000 as part of the LEGO Mindstorms theme.

How can I find missing parts for LEGO set 3801-1?

On BrickMissing you can check which parts from the LEGO Ultimate Accessories (3801-1) you already own. Add your LEGO collection and we'll show exactly which of the 45 pieces you're missing and which you already have.

Can I build the LEGO Ultimate Accessories 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 45 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Ultimate Accessories from?

The LEGO Ultimate Accessories (3801-1) belongs to the LEGO Mindstorms theme. You can browse all Mindstorms sets on BrickMissing to find more sets from this theme.

Ultimate Accessories

3801-1 Mindstorms 2000 45 parts 4.2% repair risk Beginner

Ultimate Accessories (3801-1) is a LEGO Mindstorms from 2000. The set contains 45 parts across 12 part and colour combinations in 7 colours — the full inventory below shows exactly which pieces you need to build or complete it.

Parts Inventory

🧱 45 parts

Part	Color	Qty	LEGO price each
Technic Beam Triangle Thin [Type I] 2905	Light Gray	2×	Check price → View
Sensor, Rotation 2977c01	Black	1×	Check price → View
Brick Round 1 x 1 Open Stud 3062b	Trans-Red	2×	€0,08 View at LEGO → View
Brick Round 1 x 1 Open Stud 3062b	Trans-Dark Blue	2×	€0,08 View at LEGO → View
Brick Round 1 x 1 Open Stud 3062b	Trans-Yellow	2×	€0,08 View at LEGO → View
Brick Round 1 x 1 Open Stud 3062b	Trans-Green	2×	€0,08 View at LEGO → View
Brick 1 x 2 without Bottom Tube 3065	Trans-Dark Blue	2×	€0,12 View at LEGO → View
Brick 1 x 2 without Bottom Tube 3065	Trans-Green	2×	Check price → View
Brick 1 x 2 without Bottom Tube 3065	Trans-Yellow	2×	€0,12 View at LEGO → View
Brick 1 x 2 without Bottom Tube 3065	Trans-Red	2×	€0,12 View at LEGO → View
Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints 32173	Yellow	2×	Check price → View
Technic Axle Connector 2 x 3 with Ball Socket, Open Sides 32174	Yellow	4×	Check price → View