Fitment-aware commerce for automotive brands
The fitment architecture layer that connects your catalog, your customers, and your ERP - without custom middleware.
Part of the Teifi ecosystem
Teifi Parts is a Teifi Labs product - proprietary IP built to extend Shopify into automotive and parts commerce. It's one of several standalone products we've built to take Shopify into verticals it wasn't originally designed for.
Who it's for
Aftermarket parts distributors
Aftermarket parts distributors managing 100K to 1M+ SKUs across hundreds of vendor feeds, where fitment accuracy determines whether a customer completes a purchase or exits to a competitor.
Specialist parts retailers
Automotive brands migrating from Adobe Commerce, Oracle SuiteCommerce, or custom platforms where fitment logic is tightly coupled to the platform and doesn't survive a replatform without architectural rethinking.
OEMs and powersports brands
Powersports, marine, and heavy equipment businesses serving wholesale and retail buyers simultaneously - where fitment data needs to work correctly across every buyer type and every channel from a single source.
How it works
YMM Data Ingestion
Ingests ACES/PIES XML, SEMA Data Co-op files, ERP and PIM outputs, and custom databases - all resolved into unified YMM mappings stored as structured metafields on the Shopify product record.
Persistent Vehicle Selection
A buyer selects their vehicle once - that context persists across collections, search, PDPs, and cart. MyGarage lets returning customers shop fitment-filtered from the first click.
Catalog Scale Without Degradation
Powered by Elasticsearch - sub-10ms query response at any catalog size. Direct-fit and universal-fit products surface together in a single ranked result.
Fitment-Aware Commerce
Real-time "Fits / Doesn't Fit" confirmation on every PDP. Fitment-aware cross-sell surfaces compatible accessories and compatible assemblies.
Built for automotive. Proven in production.
Royal Distributing
Canada's largest powersports and motorsports distributor. We rebuilt their fitment architecture on Teifi Parts - 500K+ SKUs, supplier data from multiple sources, and a vehicle-first search experience across wholesale and DTC channels.
Read case study
OE Wheels
A specialist wheel retailer with deep fitment requirements across hundreds of vehicle applications. 250K+ fitment rows imported, persistent vehicle selection, fitment-filtered catalog, and fitment-locked checkout - migrated from Oracle SuiteCommerce in under 6 months.
Read case studyFitment Architecture Assessment
A 60-minute diagnostic that maps your fitment data state, surfaces integration blockers and catalog scale challenges, and delivers a written assessment of where your architecture introduces operational risk - and what resolving it requires.