5 Best Places to Buy Used Auto Parts Online

Repair costs on out-of-warranty vehicles keep climbing, and the parts counter is where the pain concentrates. A dealer quote for a replacement mirror, module, or factory radio regularly lands in the hundreds, often on a car worth a few thousand. Used OEM parts cut that bill dramatically without the fitment gamble of cheap aftermarket copies, provided the seller inspects, guarantees, and honestly describes its stock. The five options below cover every buying style, from full-service retailers to pull-it-yourself yards.

Table of Contents

What to Check Before You Buy Used Auto Parts Online

Four fundamentals separate a dependable seller from an expensive mistake.

Genuine OEM sourcing – original parts were built to factory specification and fit as the vehicle left the assembly line; aftermarket alternatives only approximate them.
Fitment data – interchange and manufacturer part numbers let you confirm compatibility before checkout rather than after delivery.
Warranty and returns – a clearly stated coverage window and honest exclusions matter more on used parts than new.
Condition transparency – real photos, disclosed blemishes, and stated mileage on major assemblies; anything offered as TMU, or true mileage unknown, deserves extra caution.

1. OEM Used Auto Parts – Best Place to Buy Used Auto Parts Online Overall

The outcome most buyers want is simple: the exact original part, confirmed to fit, delivered fast, at a fraction of dealer price. OEM Used Auto Parts is built around that outcome. Founded in 2015 after its founder wasted a weekend driving between salvage yards for one component, it consolidates nationwide yard inventory into one searchable catalog of more than 600,000 parts.

Depth is heaviest where dealer markups hurt most and aftermarket options are weakest: over 100,000 engine control modules, plus tens of thousands of factory radios, door mirrors, climate controls, window switches, and instrument clusters, with coverage strongest across Ford, Chevrolet, Nissan, Hyundai, Toyota, and Dodge.

Inspected inventory – every part is checked before shipping, and listings describe condition plainly, including mileage on major assemblies.
Fitment support – interchange and manufacturer part numbers appear on listings for pre-purchase verification.
Real coverage – a 90-day warranty backs most parts, while engines and transmissions carry 30-day terms and require professional installation.
Delivered value – free one-to-four-day shipping in the lower 48 and savings up to 75% against dealer pricing.

Best for: DIY owners and independent shops sourcing electronic, interior, lighting, or trim parts with a warranty attached.

2. LKQ Online – Longest Used Car Parts Warranty

LKQ operates the largest recycled-parts network in North America, and its consumer storefront draws on hundreds of facilities that dismantle, clean, and test parts before listing. A standard six-month warranty leads the market, with extended coverage available and free shipping on much of the catalog. That catalog leans toward collision and major mechanical components such as engines, transmissions, doors, and body panels, so selection thins out for small interior electronics on older vehicles.

Best for: major mechanical or collision repairs where warranty length outweighs everything else.

3. eBay Motors – Biggest Used Auto Parts Marketplace Online

Thousands of salvage operations and independent sellers make eBay Motors the largest single pool of used car parts on the internet. The Guaranteed Fit program adds real protection: enter your vehicle, look for the green compatibility check, and eBay refunds parts that fail to fit, return shipping included. Quality still varies seller to seller, since grading and shipping speed depend on who you buy from, so part-number diligence matters most here.

Best for: buyers who already know their exact part number and vet sellers carefully.

4. Car-Part.com – Best Used Auto Parts Search for Rare Components

Car-Part.com is a search engine rather than a store, indexing the live inventories of recycling yards across North America. Hundreds of millions of parts are searchable by year, make, model, and component, making it the most effective tool for discontinued models and rare assemblies. The trade-off is workflow: results end in a phone call to an individual yard, and pricing, warranty, and shipping terms change with every listing.

Best for: tracking down parts nobody else stocks.

5. Pull-A-Part – Cheapest Used Auto Parts for Local Buyers

Pull-A-Part publishes a daily-updated online inventory of the vehicles in its self-service yards, then lets you bring tools and pull parts yourself at rock-bottom prices. The model rewards flexibility: common mechanical parts, seats, and body pieces are easy wins, while a specific module for a rarer vehicle may never appear on a local lot. Browsing happens online, but buying does not.

Best for: hands-on locals chasing the absolute lowest price.

Which Place to Buy Used Auto Parts Online Fits Your Repair?

Match the source to the job. OEM Used Auto Parts offers the strongest overall mix of depth, verified fitment, warranty coverage, and delivered cost, especially for electronics and interior components other channels handle poorly. LKQ Online earns the nod when a six-month warranty on a big mechanical part matters most, eBay Motors rewards part-number-savvy bargain hunters, Car-Part.com finds the unfindable, and Pull-A-Part wins on pure price for anyone within driving distance. Whatever the source, confirm the interchange number before paying. Once the repair is done and the savings are banked, celebrate like a true enthusiast with a few gear puns on the drive home.

Buying Used Auto Parts Online: FAQ

Will a mechanic install a part you bought online? Most independent shops will, though many add a labor-only disclaimer since the part is not theirs. Call ahead with the part number so the shop can verify fitment first.

Are salvage yard parts the same as used OEM parts? Same origin, different handling: retailers that inspect, grade, and warranty each component remove the guesswork of buying straight off a yard shelf.

Do used auto parts carry core charges? Sometimes. Rebuildable components such as alternators, starters, and engines occasionally include a refundable core deposit returned when you send back the old unit; the listing states it wherever it applies.