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5.9L-6.7L Cummins HD Valve Spring upgrade
5.9L- 6.7L 24V Cummins HD Valve Spring upgrade is approximately 25% stronger than the standard stock spring.
5.9L-6.7L Cummins HD Valve Spring upgrade
5.9L- 6.7L 24V Cummins HD Valve Spring upgrade is approximately 25% stronger than the standard stock spring.