How many pieces does the LEGO Troll on the Loose (4712-1) have?

The LEGO Troll on the Loose set (4712-1) contains 72 pieces. It was released in 2002 as part of the LEGO Harry Potter theme.

How can I find missing parts for LEGO set 4712-1?

On BrickMissing you can check which parts from the LEGO Troll on the Loose (4712-1) you already own. Add your LEGO collection and we'll show exactly which of the 72 pieces you're missing and which you already have.

Can I build the LEGO Troll on the Loose 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 72 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Troll on the Loose from?

The LEGO Troll on the Loose (4712-1) belongs to the LEGO Harry Potter theme. You can browse all Harry Potter sets on BrickMissing to find more sets from this theme.

Troll on the Loose

4712-1 Harry Potter 2002 72 parts 12.5% repair risk Beginner

Troll on the Loose (4712-1) is a LEGO Harry Potter from 2002. The set contains 72 parts across 12 part and colour combinations in 4 colours — the full inventory below shows exactly which pieces you need to build or complete it.

Parts Inventory

🧱 72 parts

Part	Color	Qty	LEGO price each
Brick 2 x 2 Corner 2357	Light Gray	2×	Check price → View
Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges 2454a	Light Gray	2×	Check price → View
Brick 1 x 2 3004	Black	10×	€0,11 View at LEGO → View
Brick 1 x 2 3004	Light Gray	4×	Check price → View
Window 1 x 2 x 2 2/3 Pane Lattice Diamond with Rounded Top 30046	Black	1×	€0,18 View at LEGO → View
Brick 1 x 1 3005	Light Gray	6×	Check price → View
Brick 1 x 1 3005	Brown	2×	Check price → View
Brick 1 x 1 3005	Black	2×	€0,07 View at LEGO → View
Plate 2 x 3 3021	Brown	1×	Check price → View
Bar 4L (Lightsaber Blade / Wand) 30374	Light Gray	1×	Check price → View
Bar 4L (Lightsaber Blade / Wand) 30374	Brown	1×	Check price → View
Slope 45° 2 x 1 with Bottom Pin 3040b	Sand Green	2×	€0,10 View at LEGO → View

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Repairability

Can you fix Troll on the Loose if a piece goes missing?

12.5%High repair risk

easy to fixguard this box

4 of the 32 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

7.9%

All sets

6.7%

Hardest to replace

Minifig Head Pumpkin, Jack O' Lantern Pr… · Orange · 2 sets everPlate 6 x 14 · Brown · 3 sets everEquipment Dish / Plate / Bowl 3 x 3 [Pla… · White · 3 sets ever

How we calculate this →