Adding compatible vehicles and interchanges from your parts catalog to Shopify description will:
Help your buyers find the right part if they search through your website search bar
Improve your SEO discoverability
To enable this feature:
Select Settings > Sales Channels > Shopify or eBay
Toggle these setting on:
"Add vehicle definition fitment information to description"
"Add interchange information to description"
Republish your product to Shopify
How to publish to Shopify manually