Let’s talk
A custom Shopify Plus build for Doc's Diesel, featuring Year/Make/Model fitment middleware and a dedicated B2B portal that drove 80% sales growth.
Founded in 2020, Doc's Diesel is a fast-growing DTC and B2B provider of high-performance diesel maintenance products and parts. Known for quality, fast shipping, and customer service, they needed a digital platform that could scale with their growth while delivering an optimized experience for both retail and wholesale customers.
Doc's Diesel faced several challenges affecting both customer experience and operational efficiency. Customers struggled to find the correct parts due to a complex navigation structure, and the site lacked a Year/Make/Model fitment tool, a critical feature for any automotive eCommerce store. Without it, identifying compatible parts was frustrating and error-prone.
The company also had no dedicated B2B platform with features like automated fulfillment, tiered pricing, or tax-exempt flagging. As the business expanded, scalability concerns made it clear they needed a more future-proof solution.
"I don't like building on top of something that isn't built right to begin with. We looked at a few apps for Year Make Model fitment, but none gave us full control or scalability. So we built our own middleware, clean, efficient, and fully integrated with Shopify. It not only filters parts accurately, it also runs logic directly on the product page to confirm compatibility in real time. This reduces returns, saves support time, and makes the experience better for everyone. Most important, it's maintainable. The client can add new vehicle data without touching the core system. That's engineering I can stand behind." - Head of Development, Code & Cart
We built a custom Year/Make/Model fitment middleware that lets users filter parts based on their exact vehicle selection, with real-time compatibility confirmation on every product page. To support wholesale operations, we developed a dedicated B2B storefront with automated tax exemption, tiered pricing, and bulk purchasing options. The Shopify Plus framework was optimized for performance and scalability, and smart automation tools were integrated to streamline order fulfillment, tax compliance, and discount management.
73% increase in online store sessions, driven by improved navigation and product discovery
80% growth in total sales, across retail and wholesale channels
66% increase in total orders, reflecting stronger conversion across the funnel
8% higher average order value, from B2B optimization and smart upsell strategies
8% improvement in returning customer rate, indicating stronger post-purchase satisfaction
Custom middleware, UX enhancements, and B2B optimization came together in a scalable Shopify Plus solution built for both retail and wholesale buyers, proving that complex automotive eCommerce doesn't have to mean a complex customer experience.
