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5.9 Cummins Manifolds

High-Flow Turbo Manifold Upgrades

Diesel Power Source 5.9 Cummins manifolds are built for performance and durability. Each high-flow cast manifold reduces EGTs, improves turbo spool, and eliminates the cracking issues found in factory units. Designed to fit 1998–2007 Dodge Ram trucks, these manifolds provide long-lasting reliability for daily drivers and tow rigs alike. Engineered for optimal airflow and precision fitment.

What Is the Purpose of the Exhaust Manifold?

The exhaust manifold in a diesel truck serves a crucial role: it collects exhaust gases from each cylinder and channels them away from the engine. Here’s why it matters:

  1. Efficient Flow: By precisely directing exhaust gases, the manifold optimizes flow dynamics, reducing backpressure. This enhances overall engine efficiency.
  2. Heat Expansion: Unlike stock manifolds, performance manifolds are often three-piece designs. They allow slight movement to accommodate heat expansion and contraction. This prevents cracking and damage.
  3. Customization: Upgrading to a performance manifold can improve exhaust flow, boost power, and reduce lag. Whether you’re towing or chasing speed, it’s a smart investment.

How Often Should You Replace Your Exhaust Manifold?

  • Inspection Interval: Have your entire exhaust system inspected every two to three years, depending on driving conditions.
  • Signs of Wear: If the manifold appears worn or damaged, consider replacement to ensure safe driving conditions.
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