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Replace a lost piece or complete a second-hand set. Find the right shape and colour, count what is still missing and build an order for delivery or Perth collection.
1. Start with the best reference you have
You know which set it came from
Find the set number on the box or instruction booklet. If you need a digital copy, look up the set in LEGO's building instructions. For newer sets, the inventory near the back pairs a picture of each piece with an element number.
In this illustrated entry, 4645065 is the number to search. 6x is the total quantity required. This is a reading example, not an inventory taken from a particular set.
Check the building step where the piece is used to confirm its orientation and connections. Count the matching pieces you already have before working out how many to buy.
You have another piece like it
Look underneath or inside it for a small moulded design number. Light from the side and a close-up phone photograph can help. A design number identifies the shape; you still need the colour and any decoration. Our part-number guide shows where to look and how design and element numbers relate.
You have neither instructions nor a number
Describe the family, size and distinguishing feature: plate → 1 x 2 → clip, for example. Rectangular dimensions count studs across and along the piece. A 2 x 6 brick has two rows of six studs. Use the visual part-types guide to narrow down an unfamiliar shape.
2. Search from specific to broad
Try the element or design number. Enter it on its own in the catalogue search below. An element number narrows the search to a version and colour; a design number gets you to the shape.
Open the candidate and compare it. Read the description, colour and element references. Compare the connections and decoration with your original reference.
No results?
Recheck the digits and try a design number instead of an unrecognised element number. Then try the shape and dimensions. An empty search does not establish that the piece never existed.
Right shape, wrong colour?
Choose the exact colour required, using the original inventory as a reference. The colour-matching guide helps distinguish similar shades and different catalogue names.
Looks similar but will not fit?
Compare the height, underside, clip direction and hinge or axle connections. Check both pieces in the same orientation against the building step.
Not enough available?
Check the available new and pre-loved quantities. Record any remaining shortfall on your list so it does not disappear when you add a partial quantity to the cart.
3. Check the details that change the match
Same footprint, different height and top
All three have a 2 x 2 footprint. A brick's body is three plates high. A plate and a tile differ in their top connection.
Check which way an angled piece faces
Compare mirrored parts in the same view and orientation. These top-view diagrams highlight opposite sloping edges; use the original piece or building step to select the required partner.
Connections: check the underside, hollow studs, clips and hinges. For round pin holes and cross-shaped axle holes, see the Technic guide.
Decoration: match the print as well as the shape. Check whether a detail is printed or applied with a sticker; a plain replacement does not reproduce it.
Colour: use the exact shade. Broad descriptions such as “grey” or “brown” can hide important differences, especially in older sets.
Mould version: follow an exact variant requirement in your parts list. A similar-looking replacement may have a different underside or connection.
For a faithful restoration, keep an unavailable version on your list. If you are considering a substitute, check its connections, clearance and appearance in the actual building step.
Worked example: from an inventory entry to two replacements
Brick 2 x 6 in Medium Nougat. This is the shape and colour shown in the illustrated inventory entry above.
Find the piece. Search the illustrated element number 4645065. Design number 2456 also finds the shape, then you choose Medium Nougat.
Confirm the match. Check the two rows of six studs, full brick height and Medium Nougat colour.
Count the shortfall. For this example, the model needs six and you already own four matching bricks.
Quantity to buy
6 required − 4 already owned = 2 to order.
Your order line is 2456 · Brick 2 x 6 · Medium Nougat · 2 pieces. Check that two are available before adding them to your order.
Bricks Warehouse supplies genuine LEGO pieces from O'Connor, Perth. Review the complete checkout total, including delivery and any service fees, before placing your order.
Delivery
Choose an available shipping option at checkout. Your dispatch notification tells you the order has been sent; delivery time then depends on the destination and service. See current shipping rates and delivery information.
Perth collection
Choose Click and Collect when available at checkout. Wait for the ready-to-collect notification before visiting. Check warehouse hours and directions to plan your collection.
Common questions
Can I buy just one replacement LEGO piece?
You can select a quantity of one for an available loose part. Check the full checkout total: delivery and any service fees can be a significant part of a small purchase.
Can I find parts for a discontinued set?
A retired set can contain designs used in other sets. Search for the individual pieces. Special prints, older colours and particular mould variants may be harder to source; keep any unavailable items on your list.
What if my booklet's number differs from the one on the brick?
The booklet may show an element number while the brick shows a design number. In the worked example, element 4645065 identifies the Medium Nougat version of design 2456. Compare the resulting shape, colour and decoration.
Should I order the full quantity shown in the instructions?
Count what you already have first. The inventory gives the model's total requirement. In the example, six required minus four owned leaves two replacements to order.
Your next piece
Put your parts list to work.
Search genuine LEGO parts by number or description, then choose your colour and condition.