Overview

Amazon's Part Finder is a built-in tool that helps customers verify whether automotive and powersports parts are compatible with their specific vehicles. For sellers listing fitment-specific products, understanding how this system works is essential to ensuring your listings are discoverable, accurate, and converting at their best. The tool directly impacts customer confidence, return rates, and your visibility in Amazon's automotive category.

Key Points / What Sellers Need to Know

• Check-Fit Stripe - A colored banner appears at the top of product detail pages where customers enter their vehicle's year, make, and model. The stripe turns green if the part fits and red if it does not, giving buyers an instant compatibility answer.
• Fitment Data is Required - Without fitment data attached to your ASIN, the Part Finder stripe will not function for your listing, and customers cannot verify compatibility before purchasing.
• ACES Standard - Amazon uses the Aftermarket Catalog Exchange Standard (ACES), which is the industry-standard format for describing which parts fit which vehicles. This is the data format you need to work with.
• Automatic Matching - Amazon may already have fitment data in its database that matches your products based on brand name and normalized part number. This means some of your ASINs could have Part Finder enabled automatically.
• Policy Enforcement - Amazon reviews fitment data for accuracy and appropriateness. Submitting incorrect or inappropriate fitment data can result in removal of the data or loss of selling privileges.

How Part Finder Works for Customers

When a customer visits a product detail page for a fitment-specific item, they see a stripe at the top where they can input their vehicle's year, make, and model. In some cases, additional attributes like engine size or body type may be required for an accurate compatibility check. The stripe provides a clear green or red visual signal indicating whether the part is compatible. Customers can also browse all compatible parts for their specific vehicle by clicking through from this stripe, and they can filter search results to show only parts that fit their saved vehicles. A fitment table is also available on detail pages showing all vehicle configurations an ASIN is compatible with.