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1989-1998 5.9L Dodge Cummins 12 Valve
Peak Diesel Performance Heavy Duty Exhaust Valve Springs
The factory exhaust valve springs on 12 valve Cummins are sufficient for a stock engine, but when installing ANY type of exhaust brake, they simply will not hold the back pressure. Peak Diesel offers this heavy duty spring kit that will hold pressure with any exhaust brake. Kit includes six exhaust valve springs and installation instructions.
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