How many pieces does the LEGO Mobile Crane (8421-1) have?

The LEGO Mobile Crane set (8421-1) contains 1885 pieces. It was released in 2005 as part of the LEGO Technic theme.

How can I find missing parts for LEGO set 8421-1?

On BrickMissing you can check which parts from the LEGO Mobile Crane (8421-1) you already own. Add your LEGO collection and we'll show exactly which of the 1885 pieces you're missing and which you already have.

Can I build the LEGO Mobile Crane 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 1885 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Mobile Crane from?

The LEGO Mobile Crane (8421-1) belongs to the LEGO Technic theme. You can browse all Technic sets on BrickMissing to find more sets from this theme.

Mobile Crane

8421-1 Technic 2005 1885 parts 2.5% catalog rarity Intermediate

Command the most impressive machine on any LEGO construction site with the Technic Mobile Crane (8421-1). This authentic 2005 model features a fully functional pneumatic system that uses cylinders and an air pump to precisely raise and lower its massive boom. Power is delivered by an included motor and battery box, allowing the boom to extend telescopically to over 64 cm and lower the hook. Navigate the site with realistic six-wheel steering, where the wheels drive the pistons of the integrated V6 engine, a detail hobbyists will appreciate. Four retractable outriggers stabilize the impressive structure, which measures over 46 cm long, and the boom rotates a full 360 degrees for comprehensive coverage. Additionally, builders can transform this complex vehicle into an Aerial Lift using alternate instructions.

Parts Inventory

🧱 1885 parts

Showing the first 12 rows of the parts list (1885 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Black	2×	€3,00 View at LEGO → View
Black	1×	Check price → View
Yellow	2×	€0,07 View at LEGO → View
Yellow	2×	€0,12 View at LEGO → View
Black	1×	€0,12 View at LEGO → View
Black	2×	Check price → View
Yellow	4×	€0,29 View at LEGO → View
Black	3×	€0,07 View at LEGO → View
Yellow	6×	Check price → View
Black	234×	Check price → View
Yellow	1×	Check price → View
Yellow	1×	Check price → View

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Catalog rarity

How common are the parts in Mobile Crane?

2.5%Low rarity

more commonless common

5 of 201 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

6.5%

All sets

6.7%

Least common in our catalog

Battery Box, 9V 4 x 14 x 4 · Yellow · only this set in our catalogHose, Pneumatic 4mm D. 16L · Blue · only this set in our catalogSticker Sheet for Set 8421-1 · Unknown · only this set in our catalog

How we calculate this →