Current Lead Times: In Stock Engines Ship Same or Next Day - Out of Stock: 1-3 Weeks on Most Long Block Engines; 3-5 Days on Heads – *call us for more exact lead times for your specific build
The 2004.5–2007 5.9L Cummins uses strong aluminum pistons. They handle heat and pressure well. Pistons move up and down inside the cylinders to compress air and fuel.
Stock pistons work fine for daily use and towing. Performance builds often switch to forged pistons. Forged pistons resist cracking and wear under high boost and RPM.
Choosing the right pistons helps improve power and engine life.
Building engines the way the OEM factory should have in the first place.
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