Where to look when you need a specific part

Finding the right part starts with knowing what you're looking for and where manufacturers and retailers stock it. Most parts fall into a few categories — automotive, appliance, electronics, industrial, or general hardware — and each has its own supply chain. The fastest route is usually the original manufacturer or an authorized distributor, but there are several other places to check depending on what you need, how quickly you need it, and whether you want new or used.

The part number is your most valuable tool. If you have it, you can search directly on manufacturer websites, parts retailers, and marketplaces. If you don't have it, you'll need the model number of the device or vehicle the part goes into, plus a description of what broke or what you're trying to build.

Key Takeaways

  • The part number, if you have it, cuts search time dramatically — search it on the manufacturer's site first, then on general parts retailers like Amazon, eBay, or industry-specific sites.
  • If you don't have a part number, the model number of your device or vehicle is the next best thing; use it to find parts diagrams or manuals online.
  • Authorized dealers and distributors usually cost more but may provide compatibility and often have faster shipping than third-party sellers.
  • Used parts marketplaces, salvage yards, and local classifieds can save money if you're not in a hurry and don't mind inspecting the part before buying.
  • Specialty retailers exist for most industries — automotive parts stores, appliance suppliers, electronics distributors — and often have better stock and pricing than general marketplaces.

Using the part number to search

If the part has a label or you can find documentation, the part number is printed on it or in the manual. Write down the exact number, including any letters or dashes. Search that number directly on Google — often the manufacturer's page or authorized retailers appear in the top results.

Once you find a retailer that stocks it, check the price and shipping time. Authorized dealers may charge more but ship faster and may provide the part is genuine. Third-party sellers on marketplaces like Amazon or eBay are often cheaper but may have longer shipping or sell refurbished or counterfeit parts. Read the seller's reviews and return policy before ordering.

If the search returns nothing, the part may be discontinued. In that case, search for compatible replacements — many manufacturers make updated versions that work in older devices. Check forums or subreddits for your device type; other people who've fixed the same thing can point you to working alternatives.

Finding parts when you only have the model number

The model number is usually on a sticker on the device itself or in the manual. Search that model number plus the word "parts" or "manual" on Google. You'll often find an exploded diagram or parts list that shows every component and its part number.

Manufacturer websites usually have a parts section where you can enter your model number and see what's available. Some let you order directly; others direct you to authorized dealers. Appliance manufacturers like Whirlpool, GE, and LG all have parts portals. Automotive manufacturers have similar systems, though you may need to go through a dealer.

If the manufacturer's site doesn't have a parts diagram, try YouTube. Search your model number plus "repair" or "how to replace [part name]." Repair videos often show exactly where the part is and what it looks like, which helps you search for it elsewhere if the manufacturer doesn't stock it.

Specialty retailers for specific industries

Automotive parts stores like AutoZone, O'Reilly, NAPA, and Advance Auto Parts stock parts for cars and trucks. You can search by vehicle year, make, and model, and most offer same-day pickup at local stores. They also have staff who can help identify the right part if you describe the problem.

Appliance parts suppliers like AppliancePartsPros, Repair Clinic, and PartSelect let you search by brand and model number. They stock parts for refrigerators, washers, dryers, dishwashers, and ovens. Many offer diagrams showing where each part goes, which helps you confirm you're ordering the right thing.

Electronics parts retailers like Digi-Key, Mouser, and Newark stock components for building or repairing electronics — resistors, capacitors, circuit boards, connectors. These sites require part numbers and are aimed at people who know what they're looking for, but they have enormous inventory and fast shipping.

Industrial and hardware suppliers like Grainger, McMaster-Carr, and Fastenal stock everything from bearings to hydraulic hoses to fasteners. These are wholesale-oriented but open to individual buyers. Prices are often lower than retail, and they ship quickly.

Used and salvage options

If you're looking for an older or discontinued part, or if you want to save money, used parts marketplaces and salvage yards are worth checking. eBay has a large used parts section organized by category. Facebook Marketplace and Craigslist let you search locally and often avoid shipping costs.

Salvage yards specialize in used automotive parts pulled from junked vehicles. You can call ahead with your vehicle's year, make, and model, and they'll tell you if they have the part in stock. Prices are usually 30 to 50 percent lower than new, but you're buying as-is with no warranty.

For appliances, some local appliance repair shops sell used parts or can source them for you. For electronics, local computer repair shops sometimes have used components. These local sources are slower than online ordering but let you inspect the part before paying.

What to do if you can't find the part

If your search turns up nothing, the part may be truly discontinued or the device may be too old to have parts readily available. At this point, you have a few options: find a compatible replacement part from a newer model, look for a refurbished or remanufactured version, or consider replacing the whole device.

Refurbished parts are used parts that have been cleaned, tested, and sometimes repaired. They're cheaper than new and often come with a limited warranty. Remanufactured parts are rebuilt to like-new condition by the manufacturer or a certified rebuilder. Both are common for automotive and appliance parts.

If the part is truly unavailable and no compatible replacement exists, a repair shop may be able to fabricate or modify something to work. This costs more than buying a part but is sometimes cheaper than replacing the whole device. Call a few local repair shops and describe what you need; they can tell you if it's possible and what it will cost.

Checking compatibility before you buy

Before ordering, confirm that the part you found actually fits your device. Check the product description for model numbers or compatibility lists. If the listing doesn't say, look at the reviews — other buyers often mention whether it worked for their model.

If you're buying from a third-party seller, check the return policy. Some sellers accept returns within 30 days; others don't. If the part doesn't fit or doesn't work, you want to be able to send it back without losing money.

For automotive parts, double-check the year, make, model, and engine size. A part for a 2015 Honda Civic may not fit a 2016 model, even though they look similar. Use the retailer's search tool to confirm your vehicle, and read the fine print on compatibility.

Frequently Asked Questions

What's the difference between OEM and aftermarket parts?

OEM (original equipment manufacturer) parts are made by the company that built your device and are may provide to fit. Aftermarket parts are made by third-party companies and are usually cheaper but may vary in quality. For critical parts like brakes or engine components, OEM is safer. For cosmetic or wear items, aftermarket often works fine.

Can I return a part if it doesn't fit?

Most retailers allow returns within 30 days if the part is unused and in original packaging. Some charge a restocking fee. Check the return policy before ordering. If you're buying from a private seller on eBay or Facebook Marketplace, returns are less certain — ask before you buy.

How do I know if a used part is good?

Ask the seller how the part was removed and whether it was tested. For automotive parts, ask if it came from a running vehicle. For electronics, ask if it powers on. If you're buying locally, inspect it in person before handing over money. If you're buying online, choose sellers with high ratings and clear return policies.

What if the part number on the listing doesn't match what I'm looking for?

Double-check the number you're searching for — make sure there are no typos or missing digits. If the listing shows a different number but says it's compatible with your model, read the description carefully. Sometimes manufacturers use different part numbers for the same component in different regions or years. Check the compatibility list or call the seller to confirm.

Is it cheaper to buy parts online or at a local store?

Online is usually cheaper, especially for specialty retailers and bulk orders. Local stores like AutoZone or Home Depot offer same-day pickup, which saves shipping time and cost if you need the part when ready. Local repair shops sometimes price-match online retailers. Compare a few options before deciding.