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Cooler exhaust temperatures
We use a superior grade of High Silicon with Molybdenum Ductile Iron (HSMD) that eliminates weak points such as warping
providing unmatched reliability and efficiency
A great addition to your new exhaust manifold
Visor: Pre-Curved
PDI ISX / X15 New Engine Block | Zero-Hour Cummins Block 2319256 Cooler exhaust temperaturesAll New. Precision Machined. Zero Hour Confidence. PDIs ISX X15 New Engine Block is engineered for customers who want to start with a brand new foundation, not a remanufactured core with unknown history. Built from all new high strength castings and precision machined to exact specifications, this block delivers consistency, accuracy, and long term durability for serious engine builds. This block allows for a true zero hour engine build, giving you