BD Diesel BD Diesel Cast Exhaust Manifold - 07.5-12 RamPulse manifold made from high silicon ductile iron and designed to withstand extreme temperatures and vibration. Great for both stock and performance trucks. Engineered with state of art modelling software to optimize pulse flow for quicker turbo spool and increased power. Precision slip joints allow the manifold to expand and contract, which reduces cyclic thermal fatigue and greatly increases manifold longevity. Cast of high silicon ductile iron to
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