8421Mobile Crane
- 2005released
- 1,885pieces
- Technictheme
Typical new & sealed
–
from £400 · too few listings
Typical used & complete
–
from £132 · too few listings
· 38% below typical
View on eBay →
Updated 2h ago · 15 listings found
Price history
eBay UK · median Buy It Now asking price
We started tracking this set on 18 Oct 2026. The chart fills in as we record prices each day.
15 listings
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LEGO TECHNIC 8421 MOBILE CRANE / CRANE TRUCK UK
Used · not stated
electro-7599 · 100% · 445 feedback£97.78 incl. £7.64 postage 5.2p/piece 38% below typical -
LEGO TECHNIC: Mobile Crane (8421) Complete with Instructions. *See Description* UK
Used · complete
📘 Instructions vip-catdad · 100% · 3 feedback · ⚠ check carefully£132 incl. £6.76 postage 7.0p/piece Not enough data -
£143 incl. £7.08 postage 7.6p/piece 9% below typical -
£144 incl. £8.36 postage 7.7p/piece 8% below typical -
£144 incl. £8.36 postage 7.7p/piece 8% below typical -
LEGO TECHNIC: Mobile Crane (8421) UK
Used · not stated
no_3785 · new seller, no feedback yet · ⚠ check carefully£157 postage not shown 8.3p/piece About typical -
LEGO TECHNIC: Mobile Crane (8421) Complete with Instructions & Box UK
Used · complete
📘 Instructions mun9912 · 100% · 168 feedback£177 incl. £10.00 postage 9.4p/piece Not enough data -
£179 incl. £12.36 postage 9.5p/piece 15% above typical -
Lego Technic 8421 Mobile Crane with Instructions Rare Set UK
Used · not stated
📘 Instructions bagpusspurrs · 100% · 450 feedback£245 incl. £10.00 postage 13.0p/piece 56% above typical -
Lego Technic 8421 Motorised Mobile Crane - Excellent Condition UK
Used · not stated
⏱ 4d 21h · 0 bids very_big_child · 99.8% · 29,927 feedback£267 incl. £6.95 postage 14.2p/piece Current bid -
Lego Technic 8421 Motorised Mobile Crane - Excellent Condition UK
Used · not stated
very_big_child · 99.8% · 29,927 feedback£300 free postage 15.9p/piece 91% above typical
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LEGO TECHNIC: Large Mobile Crane 8421 - NEW In Sealed Box UK
New & sealed
📦 Box 📘 Instructions ⏱ 6d 9h · 0 bids mechanical_lion · 100% · 759 feedback£395 postage not shown 21.0p/piece Current bid -
LEGO TECHNIC: Mobile Motorised Crane (8421) - New & Sealed with Free UK Postage UK
New & sealed
📦 Box 📘 Instructions markmcl20 · 100% · 378 feedback£400 free postage 21.2p/piece Not enough data -
LEGO 8421 TECHNIC MOTORIZED MOBILE CRANE SET BOXED mv UK
Used · not stated
📦 Box gostude · 99.7% · 54,284 feedback£450 free postage 23.8p/piece 187% above typical -
LEGO Technic: Large Mobile Crane 8421 -- Brand New & Sealed -- UK
New & sealed
📦 Box 📘 Instructions jibberlol · 100% · 2,834 feedback£540 incl. £9.95 postage 28.6p/piece Not enough data
Only seeing UK listings. Compare all 5 countries →
Before you buy 8421
- “Complete” should mean all 1,885 pieces. Ask the seller whether they checked against the inventory or just think it's complete.
- Sealed means factory seals intact. Ask for photos of the seals and box corners; box condition moves the price a lot on retired sets.
- Check the seller's feedback. For a retired set, stick to sellers with 98%+ feedback and a history of selling LEGO.
- Watch out for knock-offs. Brands like Lepin and Mould King copy popular sets. Look for the LEGO logo on the box and bricks.
- Pay through eBay. eBay's Money Back Guarantee covers items that don't match the description, but only if you pay through eBay.
Questions
How much is LEGO 8421 Mobile Crane worth?
There are too few listings right now to give a reliable typical price. Choose "All countries" to see listings from 5 eBay sites.
How many pieces are in LEGO 8421?
Mobile Crane has 1,885 pieces. It was released in 2005.
