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Not every Cummins 6BT 5.9L 12V rebuild needs the same gasket set. This guide helps you match the right set to your specific job — top, lower, or full.

White smoke, coolant mixing with oil, and overheating are the key signs of a Cummins 4BT head gasket failure. Here's how to confirm it and what gasket set to order.

The Cummins 6CT, N14, and NT855 are large displacement workhorses found in heavy equipment across the US. Learn which gasket set fits each engine. Arko ships nationwide from LA.

Have a Dodge Ram 2500 or 3500 with a 5.9 Cummins from 1998.5 or later? You have the 24V engine — and it needs a different gasket set. Here is what to know before you order.