HOME / GUIDES

GUIDE · MARKET ENTRY

Selling auto parts into the US: what overseas factories must have before the first purchase order

To sell auto parts into the United States aftermarket at any real scale, your product data must speak two languages: ACES for vehicle fitment and PIES for product content. Every major gatekeeper — the big retailers, the program distributors, Amazon and eBay — either requires these files outright or quietly buries the listings of suppliers who cannot provide them. Your factory can win on quality and price and still never get a purchase order, because in this market the catalog data is the product’s passport.

What the gatekeepers actually ask for

A factory in Guangzhou, Bursa or Haiphong usually discovers the requirement the hard way: a promising conversation with a US distributor or marketplace that ends with "send us your ACES and PIES files." ACES is the North American standard for saying which vehicles a part fits — not "fits Camry," but a structured application record tied to the industry’s vehicle database, precise to the submodel, engine and production date. PIES is the standard for everything else about the part: numbers, descriptions, attributes, package dimensions, images, pricing fields, cross-references. Both are published by the Auto Care Association, and every serious US receiver ingests some version of them.

The subtlety that trips up exporters: each receiver ingests its own dialect. One takes ACES 4.2, another is moving to 5.0; one mandates specific description codes and image specs; marketplaces layer their own fitment rules on top. A file that one receiver accepts can bounce at the next. The standard is the grammar; the receiver’s spec sheet is the law.

Why "we have a spreadsheet" doesn’t survive the crossing

Most factories have real fitment knowledge — often better than their US competitors, because they reverse-engineered the OE part. But it lives in spreadsheets organized by OE number, in Chinese or Turkish annotations, in a sales manager’s memory. US receivers cannot ingest any of that. The work of market entry is translation in the deepest sense: OE references resolved to US vehicle configurations, free-text notes converted to coded qualifiers, part terminology mapped to the US product classification, packaging data in the units and structures PIES expects. Done wrong, the symptoms are specific: applications flagged as overlapping or duplicated, listings suppressed for incomplete attributes, and the returns that follow a wrong-vehicle sale — which on a marketplace can end a young account.

The tariff layer: landed cost is part of the pitch

US buyers evaluating an overseas supplier think in landed cost, and duty treatment differs sharply by HTS classification and country of origin — Section 301 lists, steel and aluminum measures, and antidumping orders on specific part categories can swing the math. Knowing your HTS codes and the duty picture for your origin country before the buyer asks is part of looking like a supplier who has done this before. We keep a free duty lookup for exactly this homework, and the smart factories run it on their whole line, not one SKU.

The practical market-entry path

First, the data foundation. License the reference databases from the Auto Care Association in your company’s name — they are the vocabulary your files are written in, every receiver validates against them, and the license is neither expensive nor optional. (A data partner works inside your license; anyone offering to "include" the databases is offering you a compliance problem.)

Second, build the catalog once, correctly. Map your line to US vehicle configurations with the precision receivers validate for, express every distinction as structured data rather than notes, and validate the files against the same checks your receivers run — before the first submission, not after the first rejection. A file that arrives clean marks you as a supplier worth stocking; one that bounces twice marks you as a project.

Third, enter where data quality compounds. Marketplaces give the fastest feedback loop for an unknown brand — your fitment quality directly drives search placement — while distributor line reviews reward the same clean files with bigger, slower wins. Either way, the catalog you built once keeps paying.

What to look for in a data partner

Plenty of factories outsource this step; the difference between partners shows up a year later. Insist on three things: the work happens inside your Auto Care licenses and you own every file at the end; every transformation is logged so you can defend your data to any receiver in any dispute; and the result is proven with a validation pass you could show a buyer, not a promise. That is how we hand work back — the clean files plus the ledger of what changed — because an exporter’s first US relationships are built on exactly this kind of credibility.

Frequently asked questions