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If you need further assistance, please contact our customer support. The high-pressure fuel pump was also a good part that had 20% more flow than its rivals at the time and more than its successor in the 6.7 Powerstroke. Before CP4.2 pump failure took over as the 6.7L Power Stroke’s Achilles Heel, turbo death was arguably more common. Enjoy a performance exhaust note without the aggressive volume. Your vehicle should have sounded this good from the factory. Give your vehicle a unique sound with an MB