OEM-to-aftermarket cross-reference — what’s the best source?

Q: OEM-to-aftermarket cross-reference — what’s the best source?

Three layers depending on scale and accuracy needs:Supplier-provided cross-reference — tier-1 brands (Bosch, Denso, NGK, ACDelco, Motorcraft, Continental) publish cross-reference catalogs in PIES format. Free if you’re an authorized distributor. Drop into Akeneo / Magento as a product attribute oem_xref. Covers ~70% of common SKUs.SEMA Data Coop / TecDoc cross-references — both databases include OEM ↔ aftermarket mappings as part of the licensed feed. ~85% coverage if you’re already paying for the vehicle data.WHI Solutions / Nexpart — specialist auto-parts data providers with the most complete cross-reference (~95% coverage including rare/obscure parts). Pricing $400–$2k/mo. Worth it for trade-heavy stores where buyers search by OEM number.Implementation: store cross-reference as a JSON product attribute, index it into Magento search (Elasticsearch) so a search for OEM number 04465-AZ001 returns the OEM SKU AND the equivalent Bosch / Akebono / Brembo aftermarket SKUs side-by-side with prices and stock. Critical for trade buyers who quote by OEM number from a parts catalog. Trade buyers search by OEM number ~60% of the time — without this layer you lose the order to a competitor.

Question

OEM-to-aftermarket cross-reference &mdash; what&rsquo;s the best source?

Accepted Answer

Three layers depending on scale and accuracy needs:

Supplier-provided cross-reference — tier-1 brands (Bosch, Denso, NGK, ACDelco, Motorcraft, Continental) publish cross-reference catalogs in PIES format. Free if you’re an authorized distributor. Drop into Akeneo / Magento as a product attribute oem_xref. Covers ~70% of common SKUs.
SEMA Data Coop / TecDoc cross-references — both databases include OEM ↔ aftermarket mappings as part of the licensed feed. ~85% coverage if you’re already paying for the vehicle data.
WHI Solutions / Nexpart — specialist auto-parts data providers with the most complete cross-reference (~95% coverage including rare/obscure parts). Pricing $400–$2k/mo. Worth it for trade-heavy stores where buyers search by OEM number.

Implementation: store cross-reference as a JSON product attribute, index it into Magento search (Elasticsearch) so a search for OEM number 04465-AZ001 returns the OEM SKU AND the equivalent Bosch / Akebono / Brembo aftermarket SKUs side-by-side with prices and stock. Critical for trade buyers who quote by OEM number from a parts catalog. Trade buyers search by OEM number ~60% of the time — without this layer you lose the order to a competitor.