Missing LEGO Pieces? How to Get Free Replacements (2026)
Short answer on missing LEGO pieces: if a piece is missing from a new set, LEGO will usually send a replacement for free. Go to the Replacement Parts page on LEGO.com, enter the set number, pick the missing pieces and submit; in the US they typically arrive in 11 to 13 business days. For a missing bag or lots of pieces, call LEGO instead. For older sets or lost pieces, buy them on Pick a Brick or BrickLink.
Last updated: October 31, 2026. By Chris, who runs Toy Hobbyist and writes about toys, LEGO and family play. The policies and delivery times below come from LEGO’s own help pages, all linked below, and were checked on the date above.
It always happens at step 147 of 150. The build is almost done, the kid is vibrating with excitement, and the one gray 1×2 plate you need is nowhere. Before anyone flips the table, know this: LEGO has a whole service for exactly this moment, and most missing piece problems are fixable in a few minutes of form filling plus a couple of weeks of waiting.
What Should You Do When a New LEGO Set Is Missing Pieces?
First make sure it is really missing, then request it free from LEGO. Check the box flaps, the bag you just opened, the floor and the extra pieces pile. If it is still gone, use the Replacement Parts page on LEGO.com with your set number. LEGO sends missing pieces from new sets at no charge.
Here is the step by step:
- Search the usual hiding spots. Inside box flaps, under the instruction booklet, inside larger parts, in the carpet and in the spare parts pile. Tiny pieces often come with one spare.
- Check the step again. LEGO colors like dark gray and black, or dark blue and black, look alike under lamp light. A lot of “missing” pieces turn out to be a color mix up or a piece used one step too early.
- Find the set number. It is on the front of the box and the instruction booklet. LEGO says current set numbers are 5 to 7 digits long.
- Find the element ID. The parts list at the back of the instructions shows every piece with its element number. Write down the one you need.
- Go to LEGO’s missing pieces page. Enter the set number, choose the pieces and fill in your address. You may be asked about the purchase.
- Wait for the email. LEGO emails you when the replacement pieces are on the way.
- Keep building around the gap. Most sets let you skip a step and come back later, so the build does not have to stop.
How Do You Find the LEGO Element ID and Set Number?
The set number is printed on the box and the instruction booklet, and is 5 to 7 digits on current sets. The element ID for each piece is in the parts list at the back of the building instructions. Many pieces also have a small 4 or 5 digit design number molded inside.
According to LEGO’s guide to set and piece numbers, the design number plus the color is a good way to identify a piece, and both element and design numbers work in the replacement and Pick a Brick searches. Lost the booklet? LEGO keeps digital building instructions for most sets, searchable by set number or name.
How Long Do LEGO Replacement Pieces Take to Arrive?
In the US, LEGO lists replacement pieces at 11 to 13 business days, and in Canada 10 to 14 business days, with no tracking. That is business days, so weekends and holidays do not count. In real calendar time, plan on about two and a half to three weeks before the envelope shows up.
Here is the LEGO Missing Piece Options Table, using the numbers on LEGO’s delivery timeframes page and its shipping and handling page:
| Option | Best for | Cost | How long (US) | Tracking |
|---|---|---|---|---|
| LEGO Replacement Parts (missing) | Pieces missing from a new set | Free | 11 to 13 business days | No |
| LEGO Replacement Parts (broken) | Pieces that arrived cracked or faulty | Free for faulty pieces in new sets | 11 to 13 business days | No |
| Call LEGO Consumer Services | A whole missing bag or many pieces | Free for new sets | Varies | Varies |
| Pick a Brick, Bestseller | Common pieces you lost yourself | Per piece, plus a $7 fee on orders under $14 per category | About 5 business days | Yes |
| Pick a Brick, Standard | Less common pieces | Per piece, same fee rule | Up to 28 business days | No |
| BrickLink sellers | Old, rare or retired pieces | Per piece plus each seller’s shipping | Depends on the seller | Depends on the seller |
What if a Whole Bag Is Missing From the Set?
Call LEGO rather than using the online form. LEGO’s help page on missing bags says that for a missing bag or many missing pieces from a new set, it is best to give them a call. Bags are numbered, but several bags can share the same number, so count them all before you call.
LEGO also suggests picking out a couple of the most unusual missing pieces before calling, since that helps them work out exactly which bag is gone. Depending on the set and how much is missing, they may ask for proof of purchase, so keep the receipt or order email. The details are on LEGO’s missing bags help page. Parents online often say a live chat or call goes smoother than the form for big orders, because the form can reject long lists.
Can You Get Free Replacements for Broken LEGO Pieces?
Yes, if the piece arrived broken or faulty in a new set. LEGO has a separate broken pieces form that works the same way as the missing one. Pieces that break after years of play, or that the dog chewed, are a purchase, not a free replacement.
When filling in the broken form, it helps to describe what is wrong, such as a cracked stud, a warped plate or a misprinted part. If a stuck pair of bricks is the “broken” part, try a brick separator first; it comes with many larger sets and saves a lot of fingernails.
How Do You Replace Pieces From an Old or Retired LEGO Set?
Search the element or design number on LEGO’s Pick a Brick first. If it is not there, try BrickLink, the big LEGO parts marketplace, which LEGO owns. For very old sets LEGO may suggest a similar current piece instead, and fan sites can help you identify what you need.
LEGO’s page on replacement pieces for older sets says it tries to keep many older pieces in stock but sometimes runs out, and points to fan websites and other retailers, noting those pieces can be new or used. Fan databases like Rebrickable and Brickset are handy for checking a set’s full inventory. If you have a tub of old bricks, our guide on what to do with old toys covers what is worth keeping.
Is Pick a Brick or BrickLink Better for Lost Pieces?
Pick a Brick is better for common, current pieces because it is LEGO itself and Bestseller pieces arrive in about 5 business days. BrickLink is better for retired, rare or odd colored pieces, and for buying many different parts at once from one seller. Prices and shipping vary a lot on BrickLink.
On Pick a Brick, watch the small order fee: LEGO charges a $7 service fee on orders under $14 per category, so ordering a single 10 cent plate is a bad deal. Bundle a few pieces together or add spares you know will vanish. On BrickLink, sort sellers by location to keep shipping cheap, and check minimum order amounts before adding parts to the cart.
How Do You Stop LEGO Pieces Going Missing in the First Place?
Build on a tray or a light colored blanket, open one numbered bag at a time and keep a small bowl for pieces in use. Most pieces “missing” from new sets were lost in the room, not at the factory. A little setup saves weeks of waiting on replacements.
A few habits that help:
- Use a baking tray or a build mat with a lip, so small parts cannot roll off.
- Keep the vacuum away until the build is done and the floor is checked.
- Keep finished sets and spares together in labeled bags or boxes, and keep the instructions.
- Teach younger builders to sort by color or type before starting. Our guide on how to sort LEGO has a simple system for families.
- Match the set to the builder. Our LEGO age guide explains why tiny pieces and big piece counts frustrate younger kids.
What Are the Most Common Missing LEGO Piece Mistakes?
Ordering before double checking, mixing up similar colors, skipping the set number, and asking for pieces from a set bought used. Many requests fail or are wasted because the piece was hiding in the box flap. Another common miss is ordering a part one stud size off, so match the element ID exactly.
It also pays to be patient. Replacement pieces ship untracked, so there is no tracking number to refresh. If it has been longer than LEGO’s listed time plus a few days, contact LEGO with your request details and they can check what happened.
FAQ: Missing LEGO Pieces
Are LEGO replacement pieces really free?
For pieces missing from or faulty in a new set, yes. You request them on LEGO’s Replacement Parts page and pay nothing. Pieces you lost yourself, or extras, are paid purchases through Pick a Brick.
Do you need a receipt to get missing LEGO pieces?
Not usually for a few pieces, but LEGO says it may ask for proof of purchase depending on the set and how many pieces are missing. Keep the receipt or order email until the build is finished.
How many missing LEGO pieces can you request?
LEGO does not publish a fixed number, but the online form is meant for a few pieces. For a missing bag or a long list of parts, LEGO recommends calling Consumer Services instead.
Can you get missing pieces for a LEGO set bought used?
The free service is aimed at new sets. For a secondhand set, buy pieces on Pick a Brick or BrickLink, or contact LEGO to ask, especially if the set is still current.
What if LEGO no longer makes the piece?
Try BrickLink, where sellers stock retired parts, or ask LEGO to suggest a similar piece. LEGO says it may have something close in its current range that works just as well.
