About Us

We've been in the commercial truck industry since 1922. We're the fourth generation family of Western Truck Exchange in Los Angeles, selling and servicing commercial trucks throughout the Western United States. Across those almost 100 years, there's been one thing that hasn't changed – ordering parts means calling the parts counter and going through the traditional slow process.

We created Source One Parts Center because we recognize vehicle uptime is increasingly important to fleets and drivers like you. Your end customers need their goods sooner, margins are thinning, and trucks aren't getting any more reliable. At Source One Parts Center, we make ordering those critical parts easier and faster.

We combined our four generations of industry expertise with modern e-commerce technology. Order your parts quickly at s1partscenter.com with just a couple clicks. You can also order through email or phone. We offer 1-day fulfillment Monday through Friday until 5pm EST. We've partnered with Western Truck Exchange to manage the fulfillment and shipping, so you'll have peace of mind knowing real truck people – not robots – are making sure you get what you ordered.

When you order your OEM truck parts from Source One Parts Center, you're getting a new parts counter experience.