JAKS Diesel is a family-owned and operated diesel parts business, built by a Colorado native to solve a simple problem: getting the right heavy-duty diesel parts, fast, without confusion or inflated dealer pricing.

We specialize in cylinder heads and critical engine components for Caterpillar, Cummins, Detroit Diesel, and Mack engines. Our parts are sourced direct from manufacturers and supported by real product knowledge—not guesswork.

Unlike large distributors, we work directly with customers in the field. We offer local delivery throughout Colorado, support nationwide shipping and drop-ship fulfillment, and stand behind every part we sell. When you call JAKS Diesel, you speak with someone who understands cores, fitment, and downtime—not a call center.

Our parts are sourced direct from manufacturers and supported by real product knowledge—not guesswork.

What We Do Differently

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  Family-owned, hands-on operation
  
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  Colorado-based with local delivery available
  
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  Wholesale pricing direct from manufacturers
  
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  Clear, upfront core charge policies
  
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  Nationwide shipping and drop-ship support
  
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  Real phone support — no menus, no runaround
  

Our Commitment

We believe diesel parts should come with straight answers and dependable service. If you have questions about fitment, core returns, or availability, we encourage you to call us directly.

📞 Call us: (720) 445-6249

🕒 Hours: Monday–Friday, 8am–5pm

📍 Colorado-based | Local delivery available