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The Part Fits
The Part Fits Program: Our Fitment Guarantee
At The Part Market, trust comes first. That’s why every customer can take part in The Part Fits Program, our commitment to making sure the parts and accessories you buy fit the vehicle they’re meant for.
Add your vehicle by VIN, license plate or year, make, model and engine, and every product page shows you where that part stands with your vehicle before you buy. This simple step protects buyers from ordering the wrong part and protects our sellers from avoidable returns, creating a safer, more reliable marketplace for automotive parts.
Backed by Industry-Leading Fitment Data
We don’t hide parts we can’t match. Instead, every product shows one of four labels for your vehicle:
- ✅ Fits your vehicle: manufacturer fitment data confirms this part fits your vehicle. These parts are covered by The Part Fits Program.
- ❌ Doesn’t fit your vehicle: the fitment data shows this part isn’t right for your vehicle. We’ll point you to parts that do fit.
- ???? Universal: the part isn’t vehicle-specific, such as tools, accessories and supplies.
- ❔ No fitment data available: we don’t have manufacturer fitment data for this part yet. Check the part number with the manufacturer or message the vendor before you order.
We’re adding new fitment data all the time. When a part gets fitment data, its label updates automatically.
Backed by Industry-Leading Fitment Data
The accuracy of The Part Fits Program starts with the data behind it. We’ve partnered with trusted names in automotive data, including Vertical Development and DCi, to power our fitment catalog. These partnerships give us access to industry-standard vehicle and parts compatibility data, so when you see a green checkmark on The Part Market, it’s backed by the same data the automotive industry relies on.
Confirmed Fitment: The Green Checkmark
When you add your vehicle, The Part Market checks it against each listing using our fitment database. A green checkmark means the part fits your vehicle, so you can check out with confidence.
Fewer Returns, Better Experience
When buyers shop with their vehicle added and can see clearly what fits, ordering mistakes drop, and so do returns. That means a smoother experience for buyers and fewer headaches for sellers.
Protection for Fitment-Related Returns
If an item marked Fits your vehicle arrives and doesn’t fit, you can open a return request using the “Doesn’t fit my vehicle” reason within 30 days of receiving the item.
Who is covered: buyers who confirm their vehicle by VIN, license plate or manual selection before checkout and payment, and who buy a part marked Fits your vehicle for that vehicle.
Who is not covered:
- buyers who don’t confirm their vehicle before checkout
- parts marked Doesn’t fit your vehicle, Universal or No fitment data available
Buyers who aren’t covered are responsible for the cost of returning the item.
Once the seller confirms the return, the buyer receives a prepaid return label from The Part Market at no cost to the seller.
Exceptions
Shipping location: The Part Fits Program covers return shipping for items shipped to addresses within the United States. Returns from US territories, Canada and Mexico are accepted but are not covered under the program.
Oversized and freight items: Neither The Part Market nor the seller covers return shipping for oversized or freight items. An item is considered oversized or freight if:
- it was shipped by a domestic freight carrier because of its size,
- the package weighs more than 70 lbs, or
- the package measures more than 108 inches (and up to 130 inches) in combined length and girth.
Parts without confirmed fitment: Universal parts and parts marked No fitment data available are not eligible for The Part Fits Program. Standard return terms from the seller still apply.
For Sellers
Fitment information on your listings
Where manufacturer fitment data is available, compatibility and fitment information loads automatically from our catalog, powered by our data partners Vertical Development and DCi. You don’t need to build a fitment guide by hand.
Parts without fitment data still list on The Part Market. They show as Universal or No fitment data available so buyers know what to expect before they order. If you can supply fitment data for your parts (ACES files or our YMME CSV template), send it to us and your listings will upgrade to Fits / Doesn’t fit labels.
Returns are covered by The Part Fits Program when the buyer confirmed their vehicle before checkout and bought a part marked Fits your vehicle. In all other cases, the return isn’t covered by the program and the buyer pays for return shipping.
Handling returnsWhen a buyer opens a return with the reason “Doesn’t fit my vehicle”:
- If the return is eligible for a TPM label: we send the buyer a free return label.
- If the return is not eligible for a TPM label: the buyer returns the item at their own expense under your standard return policy.