CarParts.com reported its A-Premium partnership scaled from a $45 million run rate in Q1 2026 to $50 million run rate in Q2 2026, with a stated goal of 300,000 packages monthly, according to Seeking Alpha. The arrangement turns CarParts.com's existing fulfillment footprint into a revenue line: A-Premium, a domestic auto-parts brand, uses CarParts.com's warehouses and last-mile network to ship its own inventory directly to customers. The company disclosed the progression during its Q2 earnings call, marking one of the few public examples of a vertical e-commerce operator successfully monetizing logistics infrastructure as a standalone service.
The mechanics are straightforward. A-Premium stocks inventory inside CarParts.com's fulfillment centers. When an A-Premium order arrives, CarParts.com picks, packs, and ships it using its own carrier contracts and routing logic. A-Premium pays a per-package fee. CarParts.com absorbs the incremental volume without building new facilities, and A-Premium gains geographic reach and two-day delivery without constructing its own distribution network. The 300,000 packages monthly target implies roughly 10,000 packages per day, a material share of CarParts.com's total throughput but well within existing capacity.
This works because the product categories align tightly. Both companies move automotive hard parts: alternators, brake rotors, suspension components. Dimensional weight, fragility, and carrier routing are nearly identical. That means CarParts.com's existing bin locations, packing protocols, and carrier zones serve A-Premium orders without retooling. The fulfillment team does not need separate training or separate materials. The warehouse management system treats A-Premium SKUs as another client code in the same product taxonomy. Revenue per package is incremental; cost per package is mostly variable labor and carrier fees already negotiated at scale.
The playbook for a smaller physical-product brand is to identify a non-competing brand in the same product category and offer fulfillment as a service once your own volume justifies a lease. If you ship 500+ packages per week of a specific product type—apparel, supplements, kitchen tools—you likely have a zone-optimized carrier contract and a packing cadence. Approach a brand selling adjacent SKUs in the same size/weight envelope. Offer to store their inventory in your leased space and pick-pack-ship their orders for a per-unit fee equal to your variable cost plus 20-30% margin. Start with a three-month pilot at 100 packages per week. Use your existing WMS or a shared Shopify fulfillment app to route their orders. Invoice monthly. The brand saves the cost of a separate 3PL contract; you monetize unused shelf space and spread fixed rent across more units. Document the per-package cost clearly: your carrier rate, your labor minute, your material cost, your margin. If the relationship works, scale to 500 packages per week and negotiate a six-month pre-pay at a 10% discount to lock in volume.
The broader signal is that vertical fulfillment networks become revenue assets once throughput exceeds fixed cost. CarParts.com built its distribution footprint to serve its own e-commerce channel. The A-Premium deal converts that sunk cost into a margin line without requiring capital investment. For any brand operating its own warehouse, the question is not whether to offer fulfillment as a service, but which non-competing brand to approach first and how to price the package fee to ensure incremental profit from day one.