PartsBySpec is an AI-powered search engine built for car enthusiasts, hot rodders, restorers, and anyone who needs to find the right performance part for their build.
Instead of browsing through thousands of catalog pages or guessing at part numbers, you describe what you need in plain English — "Mustang II front suspension kit with Wilwood brakes for a '65 Mustang" — and we find it. Our AI understands vehicle fitment, specifications, and the way enthusiasts actually talk about parts.
We index parts from leading performance catalogs and match them against real fitment data, so you can trust that the results actually fit your vehicle. No more cross-referencing spreadsheets or forum posts.
When you search, our system parses your query to understand the vehicle, part type, specifications, and brand preferences. It then searches across our indexed catalogs using fitment matching, specification filtering, and full-text search to find the most relevant results. An AI assistant reviews the results and provides expert context about the matches.
We currently index 50,000+ products from Speedway Motors, with more catalogs being added. Our goal is to become the single search for performance and restoration parts across all major suppliers.